blockworks-foundation
/
solana
mirror of https://github.com/blockworks-foundation/solana.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
solana/docs/src/apps/jsonrpc-api.md

62 KiB
Raw Blame History

title
JSON RPC API

Solana nodes accept HTTP requests using the JSON-RPC 2.0 specification.

To interact with a Solana node inside a JavaScript application, use the solana-web3.js library, which gives a convenient interface for the RPC methods.

RPC HTTP Endpoint

Default port: 8899 eg. http://localhost:8899, http://192.168.1.88:8899

RPC PubSub WebSocket Endpoint

Default port: 8900 eg. ws://localhost:8900, http://192.168.1.88:8900

Methods

Request Formatting

To make a JSON-RPC request, send an HTTP POST request with a Content-Type: application/json header. The JSON request data should contain 4 fields:

  • jsonrpc: <string>, set to "2.0"
  • id: <number>, a unique client-generated identifying integer
  • method: <string>, a string containing the method to be invoked
  • params: <array>, a JSON array of ordered parameter values

Example using curl:

curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getBalance", "params":["83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri"]}' 192.168.1.88:8899

The response output will be a JSON object with the following fields:

  • jsonrpc: <string>, matching the request specification
  • id: <number>, matching the request identifier
  • result: <array|number|object|string>, requested data or success confirmation

Requests can be sent in batches by sending an array of JSON-RPC request objects as the data for a single POST.

Definitions

  • Hash: A SHA-256 hash of a chunk of data.
  • Pubkey: The public key of a Ed25519 key-pair.
  • Signature: An Ed25519 signature of a chunk of data.
  • Transaction: A Solana instruction signed by a client key-pair.

Configuring State Commitment

Solana nodes choose which bank state to query based on a commitment requirement set by the client. Clients may specify either:

  • {"commitment":"max"} - the node will query the most recent bank confirmed by the cluster as having reached MAX_LOCKOUT_HISTORY confirmations
  • {"commitment":"root"} - the node will query the most recent bank having reached MAX_LOCKOUT_HISTORY confirmations on this node
  • {"commitment":"single"} - the node will query the most recent bank having reached 1 confirmation
  • {"commitment":"recent"} - the node will query its most recent bank

The commitment parameter should be included as the last element in the params array:

curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getBalance", "params":["83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri",{"commitment":"max"}]}' 192.168.1.88:8899

Default:

If commitment configuration is not provided, the node will default to "commitment":"max"

Only methods that query bank state accept the commitment parameter. They are indicated in the API Reference below.

RpcResponse Structure

Many methods that take a commitment parameter return an RpcResponse JSON object comprised of two parts:

  • context : An RpcResponseContext JSON structure including a slot field at which the operation was evaluated.
  • value : The value returned by the operation itself.

Health Check

Although not a JSON RPC API, a GET /heath at the RPC HTTP Endpoint provides a health-check mechanism for use by load balancers or other network infrastructure. This request will always return a HTTP 200 OK response with a body of "ok" or "behind" based on the following conditions:

  1. If one or more --trusted-validator arguments are provided to solana-validator, "ok" is returned when the node has within HEALTH_CHECK_SLOT_DISTANCE slots of the highest trusted validator, otherwise "behind" is returned.
  2. "ok" is always returned if no trusted validators are provided.

JSON RPC API Reference

getAccountInfo

Returns all information associated with the account of provided Pubkey

Parameters:

  • <string> - Pubkey of account to query, as base-58 encoded string
  • <object> - (optional) Configuration object containing the following optional fields:
    • (optional) Commitment
    • (optional) encoding: <string> - encoding for Account data, either "binary" or jsonParsed". If parameter not provided, the default encoding is binary. Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the data field is type <string>.

Results:

The result will be an RpcResponse JSON object with value equal to:

  • <null> - if the requested account doesn't exist
  • <object> - otherwise, a JSON object containing:
    • lamports: <u64>, number of lamports assigned to this account, as a u64
    • owner: <string>, base-58 encoded Pubkey of the program this account has been assigned to
    • data: <string|object>, data associated with the account, either as base-58 encoded binary data or JSON format {<program>: <state>}, depending on encoding parameter
    • executable: <bool>, boolean indicating if the account contains a program and is strictly read-only
    • rentEpoch: <u64>, the epoch at which this account will next owe rent, as u64

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getAccountInfo", "params":["4fYNw3dojWmQ4dXtSGE9epjRGy9pFSx62YypT7avPYvA"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":{"data":"11116bv5nS2h3y12kD1yUKeMZvGcKLSjQgX6BeV7u1FrjeJcKfsHRTPuR3oZ1EioKtYGiYxpxMG5vpbZLsbcBYBEmZZcMKaSoGx9JZeAuWf","executable":false,"lamports":1000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}},"id":1}

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getAccountInfo", "params":["4fYNw3dojWmQ4dXtSGE9epjRGy9pFSx62YypT7avPYvA",{"encoding":"json"}]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":{"data":{"nonce":{"initialized":{"authority":"Bbqg1M4YVVfbhEzwA9SpC9FhsaG83YMTYoR4a8oTDLX","blockhash":"3xLP3jK6dVJwpeGeTDYTwdDK3TKchUf1gYYGHa4sF3XJ","feeCalculator":{"lamportsPerSignature":5000}}}},"executable":false,"lamports":1000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}},"id":1}

getBalance

Returns the balance of the account of provided Pubkey

Parameters:

  • <string> - Pubkey of account to query, as base-58 encoded string
  • <object> - (optional) Commitment

Results:

  • RpcResponse<u64> - RpcResponse JSON object with value field set to the balance

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getBalance", "params":["83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":0},"id":1}

getBlockCommitment

Returns commitment for particular block

Parameters:

  • <u64> - block, identified by Slot

Results:

The result field will be a JSON object containing:

  • commitment - commitment, comprising either:
    • <null> - Unknown block
    • <array> - commitment, array of u64 integers logging the amount of cluster stake in lamports that has voted on the block at each depth from 0 to MAX_LOCKOUT_HISTORY + 1
  • totalStake - total active stake, in lamports, of the current epoch

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getBlockCommitment","params":[5]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"commitment":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,32],"totalStake": 42},"id":1}

getBlockTime

Returns the estimated production time of a block.

Each validator reports their UTC time to the ledger on a regular interval by intermittently adding a timestamp to a Vote for a particular block. A requested block's time is calculated from the stake-weighted mean of the Vote timestamps in a set of recent blocks recorded on the ledger.

Nodes that are booting from snapshot or limiting ledger size (by purging old slots) will return null timestamps for blocks below their lowest root + TIMESTAMP_SLOT_RANGE. Users interested in having this historical data must query a node that is built from genesis and retains the entire ledger.

Parameters:

  • <u64> - block, identified by Slot

Results:

  • <null> - block has not yet been produced
  • <i64> - estimated production time, as Unix timestamp (seconds since the Unix epoch)

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getBlockTime","params":[5]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":1574721591,"id":1}

getClusterNodes

Returns information about all the nodes participating in the cluster

Parameters:

None

Results:

The result field will be an array of JSON objects, each with the following sub fields:

  • pubkey: <string> - Node public key, as base-58 encoded string
  • gossip: <string> - Gossip network address for the node
  • tpu: <string> - TPU network address for the node
  • rpc: <string>|null - JSON RPC network address for the node, or null if the JSON RPC service is not enabled
  • version: <string>|null - The software version of the node, or null if the version information is not available

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getClusterNodes"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":[{"gossip":"10.239.6.48:8001","pubkey":"9QzsJf7LPLj8GkXbYT3LFDKqsj2hHG7TA3xinJHu8epQ","rpc":"10.239.6.48:8899","tpu":"10.239.6.48:8856"},"version":"1.0.0 c375ce1f"],"id":1}

getConfirmedBlock

Returns identity and transaction information about a confirmed block in the ledger

Parameters:

  • <u64> - slot, as u64 integer
  • <string> - (optional) encoding for each returned Transaction, either "json", "jsonParsed", or "binary". If parameter not provided, the default encoding is JSON. Parsed-JSON encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the transaction.message.instructions list. If parsed-JSON is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (accounts, data, and programIdIndex fields).

Results:

The result field will be an object with the following fields:

  • <null> - if specified block is not confirmed
  • <object> - if block is confirmed, an object with the following fields:
    • blockhash: <string> - the blockhash of this block, as base-58 encoded string
    • previousBlockhash: <string> - the blockhash of this block's parent, as base-58 encoded string; if the parent block is not available due to ledger cleanup, this field will return "11111111111111111111111111111111"
    • parentSlot: <u64> - the slot index of this block's parent
    • transactions: <array> - an array of JSON objects containing:
      • transaction: <object|string> - Transaction object, either in JSON format or base-58 encoded binary data, depending on encoding parameter
      • meta: <object> - transaction status metadata object, containing null or:
        • err: <object | null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
        • fee: <u64> - fee this transaction was charged, as u64 integer
        • preBalances: <array> - array of u64 account balances from before the transaction was processed
        • postBalances: <array> - array of u64 account balances after the transaction was processed
        • DEPRECATED: status: <object> - Transaction status
          • "Ok": <null> - Transaction was successful
          • "Err": <ERR> - Transaction failed with TransactionError
    • rewards: <array> - an array of JSON objects containing:
      • pubkey: <string> - The public key, as base-58 encoded string, of the account that received the reward
      • lamports: <i64>- number of reward lamports credited or debited by the account, as a i64
    • blockTime: <i64 | null> - estimated production time, as Unix timestamp (seconds since the Unix epoch). null if not available

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedBlock","params":[430, "json"]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":{"blockhash":"Gp3t5bfDsJv1ovP8cB1SuRhXVuoTqDv7p3tymyubYg5","parentSlot":429,"previousBlockhash":"EFejToxii1L5aUF2NrK9dsbAEmZSNyN5nsipmZHQR1eA","transactions":[{"transaction":{"message":{"accountKeys":["6H94zdiaYfRfPfKjYLjyr2VFBg6JHXygy84r3qhc3NsC","39UAy8hsoYPywGPGdmun747omSr79zLSjqvPJN3zetoH","SysvarS1otHashes111111111111111111111111111","SysvarC1ock11111111111111111111111111111111","Vote111111111111111111111111111111111111111"],"header":{"numReadonlySignedAccounts":0,"numReadonlyUnsignedAccounts":3,"numRequiredSignatures":2},"instructions":[{"accounts":[1,2,3],"data":"29z5mr1JoRmJYQ6ynmk3pf31cGFRziAF1M3mT3L6sFXf5cKLdkEaMXMT8AqLpD4CpcupHmuMEmtZHpomrwfdZetSomNy3d","programIdIndex":4}],"recentBlockhash":"EFejToxii1L5aUF2NrK9dsbAEmZSNyN5nsipmZHQR1eA"},"signatures":["35YGay1Lwjwgxe9zaH6APSHbt9gYQUCtBWTNL3aVwVGn9xTFw2fgds7qK5AL29mP63A9j3rh8KpN1TgSR62XCaby","4vANMjSKiwEchGSXwVrQkwHnmsbKQmy9vdrsYxWdCup1bLsFzX8gKrFTSVDCZCae2dbxJB9mPNhqB2sD1vvr4sAD"]},"meta":{"err":null,"fee":18000,"postBalances":[499999972500,15298080,1,1,1],"preBalances":[499999990500,15298080,1,1,1],"status":{"Ok":null}}}]},"id":1}

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedBlock","params":[430, "binary"]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":{"blockhash":"Gp3t5bfDsJv1ovP8cB1SuRhXVuoTqDv7p3tymyubYg5","parentSlot":429,"previousBlockhash":"EFejToxii1L5aUF2NrK9dsbAEmZSNyN5nsipmZHQR1eA","transactions":[{"transaction":"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","meta":{"err":null,"fee":18000,"postBalances":[499999972500,15298080,1,1,1],"preBalances":[499999990500,15298080,1,1,1],"status":{"Ok":null}}}]},"id":1}

Transaction Structure

Transactions are quite different from those on other blockchains. Be sure to review Anatomy of a Transaction to learn about transactions on Solana.

The JSON structure of a transaction is defined as follows:

  • signatures: <array[string]> - A list of base-58 encoded signatures applied to the transaction. The list is always of length message.header.numRequiredSignatures, and the signature at index i corresponds to the public key at index i in message.account_keys.
  • message: <object> - Defines the content of the transaction.
    • accountKeys: <array[string]> - List of base-58 encoded public keys used by the transaction, including by the instructions and for signatures. The first message.header.numRequiredSignatures public keys must sign the transaction.
    • header: <object> - Details the account types and signatures required by the transaction.
      • numRequiredSignatures: <number> - The total number of signatures required to make the transaction valid. The signatures must match the first numRequiredSignatures of message.account_keys.
      • numReadonlySignedAccounts: <number> - The last numReadonlySignedAccounts of the signed keys are read-only accounts. Programs may process multiple transactions that load read-only accounts within a single PoH entry, but are not permitted to credit or debit lamports or modify account data. Transactions targeting the same read-write account are evaluated sequentially.
      • numReadonlyUnsignedAccounts: <number> - The last numReadonlyUnsignedAccounts of the unsigned keys are read-only accounts.
    • recentBlockhash: <string> - A base-58 encoded hash of a recent block in the ledger used to prevent transaction duplication and to give transactions lifetimes.
    • instructions: <array[object]> - List of program instructions that will be executed in sequence and committed in one atomic transaction if all succeed.
      • programIdIndex: <number> - Index into the message.accountKeys array indicating the program account that executes this instruction.
      • accounts: <array[number]> - List of ordered indices into the message.accountKeys array indicating which accounts to pass to the program.
      • data: <string> - The program input data encoded in a base-58 string.

getConfirmedBlocks

Returns a list of confirmed blocks

Parameters:

  • <u64> - start_slot, as u64 integer
  • <u64> - (optional) end_slot, as u64 integer

Results:

The result field will be an array of u64 integers listing confirmed blocks between start_slot and either end_slot, if provided, or latest confirmed block, inclusive. Max range allowed is 500,000 slots.

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedBlocks","params":[5, 10]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":[5,6,7,8,9,10],"id":1}

getConfirmedSignaturesForAddress

Returns a list of all the confirmed signatures for transactions involving an address, within a specified Slot range. Max range allowed is 10,000 Slots

Parameters:

  • <string> - account address as base-58 encoded string
  • <u64> - start slot, inclusive
  • <u64> - end slot, inclusive

Results:

The result field will be an array of:

  • <string> - transaction signature as base-58 encoded string

The signatures will be ordered based on the Slot in which they were confirmed in, from lowest to highest Slot

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedSignaturesForAddress","params":["6H94zdiaYfRfPfKjYLjyr2VFBg6JHXygy84r3qhc3NsC", 0, 100]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":{["35YGay1Lwjwgxe9zaH6APSHbt9gYQUCtBWTNL3aVwVGn9xTFw2fgds7qK5AL29mP63A9j3rh8KpN1TgSR62XCaby","4bJdGN8Tt2kLWZ3Fa1dpwPSEkXWWTSszPSf1rRVsCwNjxbbUdwTeiWtmi8soA26YmwnKD4aAxNp8ci1Gjpdv4gsr","4LQ14a7BYY27578Uj8LPCaVhSdJGLn9DJqnUJHpy95FMqdKf9acAhUhecPQNjNUy6VoNFUbvwYkPociFSf87cWbG"]},"id":1}

getConfirmedTransaction

Returns transaction details for a confirmed transaction

Parameters:

  • <string> - transaction signature as base-58 encoded string N encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the transaction.message.instructions list. If parsed-JSON is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (accounts, data, and programIdIndex fields).
  • <string> - (optional) encoding for the returned Transaction, either "json", "jsonParsed", or "binary".

Results:

  • <null> - if transaction is not found or not confirmed
  • <object> - if transaction is confirmed, an object with the following fields:
    • slot: <u64> - the slot this transaction was processed in
    • transaction: <object|string> - Transaction object, either in JSON format or base-58 encoded binary data, depending on encoding parameter
    • meta: <object | null> - transaction status metadata object:
      • err: <object | null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
      • fee: <u64> - fee this transaction was charged, as u64 integer
      • preBalances: <array> - array of u64 account balances from before the transaction was processed
      • postBalances: <array> - array of u64 account balances after the transaction was processed
      • DEPRECATED: status: <object> - Transaction status
        • "Ok": <null> - Transaction was successful
        • "Err": <ERR> - Transaction failed with TransactionError

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedTransaction","params":["35YGay1Lwjwgxe9zaH6APSHbt9gYQUCtBWTNL3aVwVGn9xTFw2fgds7qK5AL29mP63A9j3rh8KpN1TgSR62XCaby", "json"]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":{"slot":430,"transaction":{"message":{"accountKeys":["6H94zdiaYfRfPfKjYLjyr2VFBg6JHXygy84r3qhc3NsC","39UAy8hsoYPywGPGdmun747omSr79zLSjqvPJN3zetoH","SysvarS1otHashes111111111111111111111111111","SysvarC1ock11111111111111111111111111111111","Vote111111111111111111111111111111111111111"],"header":{"numReadonlySignedAccounts":0,"numReadonlyUnsignedAccounts":3,"numRequiredSignatures":2},"instructions":[{"accounts":[1,2,3],"data":"29z5mr1JoRmJYQ6ynmk3pf31cGFRziAF1M3mT3L6sFXf5cKLdkEaMXMT8AqLpD4CpcupHmuMEmtZHpomrwfdZetSomNy3d","programIdIndex":4}],"recentBlockhash":"EFejToxii1L5aUF2NrK9dsbAEmZSNyN5nsipmZHQR1eA"},"signatures":["35YGay1Lwjwgxe9zaH6APSHbt9gYQUCtBWTNL3aVwVGn9xTFw2fgds7qK5AL29mP63A9j3rh8KpN1TgSR62XCaby","4vANMjSKiwEchGSXwVrQkwHnmsbKQmy9vdrsYxWdCup1bLsFzX8gKrFTSVDCZCae2dbxJB9mPNhqB2sD1vvr4sAD"]},"meta":{"err":null,"fee":18000,"postBalances":[499999972500,15298080,1,1,1],"preBalances":[499999990500,15298080,1,1,1],"status":{"Ok":null}}},"id":1}

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0","id":1,"method":"getConfirmedTransaction","params":["35YGay1Lwjwgxe9zaH6APSHbt9gYQUCtBWTNL3aVwVGn9xTFw2fgds7qK5AL29mP63A9j3rh8KpN1TgSR62XCaby", "binary"]}' localhost:8899

// Result
{"jsonrpc":"2.0","result":{"slot":430,"transaction":"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","meta":{"err":null,"fee":18000,"postBalances":[499999972500,15298080,1,1,1],"preBalances":[499999990500,15298080,1,1,1],"status":{"Ok":null}}},"id":1}

getEpochInfo

Returns information about the current epoch

Parameters:

Results:

The result field will be an object with the following fields:

  • absoluteSlot: <u64>, the current slot
  • epoch: <u64>, the current epoch
  • slotIndex: <u64>, the current slot relative to the start of the current epoch
  • slotsInEpoch: <u64>, the number of slots in this epoch

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getEpochInfo"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"absoluteSlot":166598,"epoch":27,"slotIndex":2790,"slotsInEpoch":8192},"id":1}

getEpochSchedule

Returns epoch schedule information from this cluster's genesis config

Parameters:

None

Results:

The result field will be an object with the following fields:

  • slotsPerEpoch: <u64>, the maximum number of slots in each epoch
  • leaderScheduleSlotOffset: <u64>, the number of slots before beginning of an epoch to calculate a leader schedule for that epoch
  • warmup: <bool>, whether epochs start short and grow
  • firstNormalEpoch: <u64>, first normal-length epoch, log2(slotsPerEpoch) - log2(MINIMUM_SLOTS_PER_EPOCH)
  • firstNormalSlot: <u64>, MINIMUM_SLOTS_PER_EPOCH * (2.pow(firstNormalEpoch) - 1)

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getEpochSchedule"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"firstNormalEpoch":8,"firstNormalSlot":8160,"leaderScheduleSlotOffset":8192,"slotsPerEpoch":8192,"warmup":true},"id":1}

getFeeCalculatorForBlockhash

Returns the fee calculator associated with the query blockhash, or null if the blockhash has expired

Parameters:

  • <string> - query blockhash as a Base58 encoded string
  • <object> - (optional) Commitment

Results:

The result will be an RpcResponse JSON object with value equal to:

  • <null> - if the query blockhash has expired
  • <object> - otherwise, a JSON object containing:
    • feeCalculator: <object>, FeeCalculator object describing the cluster fee rate at the queried blockhash

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getFeeCalculatorForBlockhash", "params":["GJxqhuxcgfn5Tcj6y3f8X4FeCDd2RQ6SnEMo1AAxrPRZ"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":221},"value":{"feeCalculator":{"lamportsPerSignature":5000}}},"id":1}

getFeeRateGovernor

Returns the fee rate governor information from the root bank

Parameters:

None

Results:

The result field will be an object with the following fields:

  • burnPercent: <u8>, Percentage of fees collected to be destroyed
  • maxLamportsPerSignature: <u64>, Largest value lamportsPerSignature can attain for the next slot
  • minLamportsPerSignature: <u64>, Smallest value lamportsPerSignature can attain for the next slot
  • targetLamportsPerSignature: <u64>, Desired fee rate for the cluster
  • targetSignaturesPerSlot: <u64>, Desired signature rate for the cluster

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getFeeRateGovernor"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":54},"value":{"feeRateGovernor":{"burnPercent":50,"maxLamportsPerSignature":100000,"minLamportsPerSignature":5000,"targetLamportsPerSignature":10000,"targetSignaturesPerSlot":20000}}},"id":1}

getFees

Returns a recent block hash from the ledger, a fee schedule that can be used to compute the cost of submitting a transaction using it, and the last slot in which the blockhash will be valid.

Parameters:

Results:

The result will be an RpcResponse JSON object with value set to a JSON object with the following fields:

  • blockhash: <string> - a Hash as base-58 encoded string
  • feeCalculator: <object> - FeeCalculator object, the fee schedule for this block hash
  • lastValidSlot: <u64> - last slot in which a blockhash will be valid

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getFees"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":{"blockhash":"CSymwgTNX1j3E4qhKfJAUE41nBWEwXufoYryPbkde5RR","feeCalculator":{"lamportsPerSignature":5000},"lastValidSlot":297}},"id":1}

getFirstAvailableBlock

Returns the slot of the lowest confirmed block that has not been purged from the ledger

Parameters:

None

Results:

  • <u64> - Slot

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getFirstAvailableBlock"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":250000,"id":1}

getGenesisHash

Returns the genesis hash

Parameters:

None

Results:

  • <string> - a Hash as base-58 encoded string

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getGenesisHash"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":"GH7ome3EiwEr7tu9JuTh2dpYWBJK3z69Xm1ZE3MEE6JC","id":1}

getIdentity

Returns the identity pubkey for the current node

Parameters:

None

Results:

The result field will be a JSON object with the following fields:

  • identity, the identity pubkey of the current node as a base-58 encoded string

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getIdentity"}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"identity": "2r1F4iWqVcb8M1DbAjQuFpebkQHY9hcVU4WuW2DJBppN"},"id":1}

getInflationGovernor

Returns the current inflation governor

Parameters:

Results:

The result field will be a JSON object with the following fields:

  • initial: <f64>, the initial inflation percentage from time 0
  • terminal: <f64>, terminal inflation percentage
  • taper: <f64>, rate per year at which inflation is lowered
  • foundation: <f64>, percentage of total inflation allocated to the foundation
  • foundationTerm: <f64>, duration of foundation pool inflation in years

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getInflationGovernor"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"foundation":0.05,"foundationTerm":7.0,"initial":0.15,"taper":0.15,"terminal":0.015},"id":1}

getInflationRate

Returns the specific inflation values for the current epoch

Parameters:

None

Results:

The result field will be a JSON object with the following fields:

  • total: <f64>, total inflation
  • validator: <f64>, inflation allocated to validators
  • foundation: <f64>, inflation allocated to the foundation
  • epoch: <f64>, epoch for which these values are valid

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getInflationRate"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"epoch":100,"foundation":0.001,"total":0.149,"validator":0.148},"id":1}

getLargestAccounts

Returns the 20 largest accounts, by lamport balance

Parameters:

  • <object> - (optional) Configuration object containing the following optional fields:
    • (optional) Commitment
    • (optional) filter: <string> - filter results by account type; currently supported: circulating|nonCirculating

Results:

The result will be an RpcResponse JSON object with value equal to an array of:

  • <object> - otherwise, a JSON object containing:
    • address: <string>, base-58 encoded address of the account
    • lamports: <u64>, number of lamports in the account, as a u64

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getLargestAccounts"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":54},"value":[{"lamports":999974,"address":"99P8ZgtJYe1buSK8JXkvpLh8xPsCFuLYhz9hQFNw93WJ"},{"lamports":42,"address":"uPwWLo16MVehpyWqsLkK3Ka8nLowWvAHbBChqv2FZeL"},{"lamports":42,"address":"aYJCgU7REfu3XF8b3QhkqgqQvLizx8zxuLBHA25PzDS"},{"lamports":42,"address":"CTvHVtQ4gd4gUcw3bdVgZJJqApXE9nCbbbP4VTS5wE1D"},{"lamports":20,"address":"4fq3xJ6kfrh9RkJQsmVd5gNMvJbuSHfErywvEjNQDPxu"},{"lamports":4,"address":"AXJADheGVp9cruP8WYu46oNkRbeASngN5fPCMVGQqNHa"},{"lamports":2,"address":"8NT8yS6LiwNprgW4yM1jPPow7CwRUotddBVkrkWgYp24"},{"lamports":1,"address":"SysvarEpochSchedu1e111111111111111111111111"},{"lamports":1,"address":"11111111111111111111111111111111"},{"lamports":1,"address":"Stake11111111111111111111111111111111111111"},{"lamports":1,"address":"SysvarC1ock11111111111111111111111111111111"},{"lamports":1,"address":"StakeConfig11111111111111111111111111111111"},{"lamports":1,"address":"SysvarRent111111111111111111111111111111111"},{"lamports":1,"address":"Config1111111111111111111111111111111111111"},{"lamports":1,"address":"SysvarStakeHistory1111111111111111111111111"},{"lamports":1,"address":"SysvarRecentB1ockHashes11111111111111111111"},{"lamports":1,"address":"SysvarFees111111111111111111111111111111111"},{"lamports":1,"address":"Vote111111111111111111111111111111111111111"}]},"id":1}

getLeaderSchedule

Returns the leader schedule for an epoch

Parameters:

  • <u64> - (optional) Fetch the leader schedule for the epoch that corresponds to the provided slot. If unspecified, the leader schedule for the current epoch is fetched
  • <object> - (optional) Commitment

Results:

  • <null> - if requested epoch is not found
  • <object> - otherwise, the result field will be a dictionary of leader public keys as base-58 encoded strings and their corresponding leader slot indices as values (indices are to the first slot in the requested epoch)

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getLeaderSchedule"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"4Qkev8aNZcqFNSRhQzwyLMFSsi94jHqE8WNVTJzTP99F":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63]},"id":1}

getMinimumBalanceForRentExemption

Returns minimum balance required to make account rent exempt.

Parameters:

  • <usize> - account data length
  • <object> - (optional) Commitment

Results:

  • <u64> - minimum lamports required in account

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getMinimumBalanceForRentExemption", "params":[50]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":500,"id":1}

getProgramAccounts

Returns all accounts owned by the provided program Pubkey

Parameters:

  • <string> - Pubkey of program, as base-58 encoded string
  • <object> - (optional) Configuration object containing the following optional fields:
    • (optional) Commitment
    • (optional) encoding: <string> - encoding for Account data, either "binary" or jsonParsed". If parameter not provided, the default encoding is binary. Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the data field is type <string>.
    • (optional) filters: <array> - filter results using various filter objects; account must meet all filter criteria to be included in results
Filters:

  • memcmp: <object> - compares a provided series of bytes with program account data at a particular offset. Fields:

    • offset: <usize> - offset into program account data to start comparison
    • bytes: <string> - data to match, as base-58 encoded string

  • dataSize: <u64> - compares the program account data length with the provided data size

Results:

The result field will be an array of JSON objects, which will contain:

  • pubkey: <string> - the account Pubkey as base-58 encoded string
  • account: <object> - a JSON object, with the following sub fields:
    • lamports: <u64>, number of lamports assigned to this account, as a u64
    • owner: <string>, base-58 encoded Pubkey of the program this account has been assigned to data: <string|object>, data associated with the account, either as base-58 encoded binary data or JSON format {<program>: <state>}, depending on encoding parameter
    • executable: <bool>, boolean indicating if the account contains a program and is strictly read-only
    • rentEpoch: <u64>, the epoch at which this account will next owe rent, as u64

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getProgramAccounts", "params":["4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":[{"account":{"data":"2R9jLfiAQ9bgdcw6h8s44439","executable":false,"lamports":15298080,"owner":"4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T","rentEpoch":28},"pubkey":"CxELquR1gPP8wHe33gZ4QxqGB3sZ9RSwsJ2KshVewkFY"}],"id":1}

// Request with Filters
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getProgramAccounts", "params":["4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T", {"filters":[{"dataSize": 17},{"memcmp": {"offset": 4, "bytes": "3Mc6vR"}}]}]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":[{"account":{"data":"2R9jLfiAQ9bgdcw6h8s44439","executable":false,"lamports":15298080,"owner":"4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T","rentEpoch":28},"pubkey":"CxELquR1gPP8wHe33gZ4QxqGB3sZ9RSwsJ2KshVewkFY"}],"id":1}

getRecentBlockhash

Returns a recent block hash from the ledger, and a fee schedule that can be used to compute the cost of submitting a transaction using it.

Parameters:

Results:

An RpcResponse containing a JSON object consisting of a string blockhash and FeeCalculator JSON object.

  • RpcResponse<object> - RpcResponse JSON object with value field set to a JSON object including:
  • blockhash: <string> - a Hash as base-58 encoded string
  • feeCalculator: <object> - FeeCalculator object, the fee schedule for this block hash

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getRecentBlockhash"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":{"blockhash":"CSymwgTNX1j3E4qhKfJAUE41nBWEwXufoYryPbkde5RR","feeCalculator":{"lamportsPerSignature":5000}}},"id":1}

getSignatureStatuses

Returns the statuses of a list of signatures. Unless the searchTransactionHistory configuration parameter is included, this method only searches the recent status cache of signatures, which retains statuses for all active slots plus MAX_RECENT_BLOCKHASHES rooted slots.

Parameters:

  • <array> - An array of transaction signatures to confirm, as base-58 encoded strings
  • <object> - (optional) Configuration object containing the following field:
    • searchTransactionHistory: <bool> - if true, a Solana node will search its ledger cache for any signatures not found in the recent status cache

Results:

An RpcResponse containing a JSON object consisting of an array of TransactionStatus objects.

  • RpcResponse<object> - RpcResponse JSON object with value field:

An array of:

  • <null> - Unknown transaction
  • <object>
    • slot: <u64> - The slot the transaction was processed
    • confirmations: <usize | null> - Number of blocks since signature confirmation, null if rooted, as well as finalized by a supermajority of the cluster
    • err: <object | null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
    • DEPRECATED: status: <object> - Transaction status
      • "Ok": <null> - Transaction was successful
      • "Err": <ERR> - Transaction failed with TransactionError

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getSignatureStatuses", "params":[["5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW", "5j7s6NiJS3JAkvgkoc18WVAsiSaci2pxB2A6ueCJP4tprA2TFg9wSyTLeYouxPBJEMzJinENTkpA52YStRW5Dia7"]]}' http://localhost:8899

// Request with configuration
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getSignatureStatuses", "params":[["5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW"], {"searchTransactionHistory": true}]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":82},"value":[{"slot": 72, "confirmations": 10, "err": null, "status": {"Ok": null}}, null]},"id":1}

// Result, first transaction rooted
{"jsonrpc":"2.0","result":{"context":{"slot":82},"value":[{"slot": 48, "confirmations": null, "err": null, "status": {"Ok": null}}, null]},"id":1}

getSlot

Returns the current slot the node is processing

Parameters:

Results:

  • <u64> - Current slot

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getSlot"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":1234,"id":1}

getSlotLeader

Returns the current slot leader

Parameters:

Results:

  • <string> - Node identity Pubkey as base-58 encoded string

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getSlotLeader"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":"ENvAW7JScgYq6o4zKZwewtkzzJgDzuJAFxYasvmEQdpS","id":1}

getStakeActivation

Returns epoch activation information for a stake account

Parameters:

  • <string> - Pubkey of stake account to query, as base-58 encoded string
  • <object> - (optional) Configuration object containing the following optional fields:
    • (optional) Commitment
    • (optional) epoch: <u64> - epoch for which to calculate activation details. If parameter not provided, defaults to current epoch.

Results:

The result will be a JSON object with the following fields:

  • state: <string - the stake account's activation state, one of: active, inactive, activating, deactivating
  • active: <u64> - stake active during the epoch
  • inactive: <u64> - stake inactive during the epoch

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getStakeActivation", "params": ["CYRJWqiSjLitBAcRxPvWpgX3s5TvmN2SuRY3eEYypFvT"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"active":197717120,"inactive":0,"state":"active"},"id":1}

// Request with Epoch
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getStakeActivation", "params": ["CYRJWqiSjLitBAcRxPvWpgX3s5TvmN2SuRY3eEYypFvT", {"epoch": 4}]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"active":124429280,"inactive":73287840,"state":"activating"},"id":1}

getSupply

Returns information about the current supply.

Parameters:

Results:

The result will be an RpcResponse JSON object with value equal to a JSON object containing:

  • total: <u64> - Total supply in lamports
  • circulating: <u64> - Circulating supply in lamports
  • nonCirculating: <u64> - Non-circulating supply in lamports
  • nonCirculatingAccounts: <array> - an array of account addresses of non-circulating accounts, as strings

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getSupply"}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1114},"value":{"circulating":16000,"nonCirculating":1000000,"nonCirculatingAccounts":["FEy8pTbP5fEoqMV1GdTz83byuA8EKByqYat1PKDgVAq5","9huDUZfxoJ7wGMTffUE7vh1xePqef7gyrLJu9NApncqA","3mi1GmwEE3zo2jmfDuzvjSX9ovRXsDUKHvsntpkhuLJ9","BYxEJTDerkaRWBem3XgnVcdhppktBXa2HbkHPKj2Ui4Z],total:1016000}},"id":1}

getTransactionCount

Returns the current Transaction count from the ledger

Parameters:

Results:

  • <u64> - count

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getTransactionCount"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":268,"id":1}

getVersion

Returns the current solana versions running on the node

Parameters:

None

Results:

The result field will be a JSON object with the following fields:

  • solana-core, software version of solana-core

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getVersion"}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"solana-core": "1.3.0"},"id":1}

getVoteAccounts

Returns the account info and associated stake for all the voting accounts in the current bank.

Parameters:

Results:

The result field will be a JSON object of current and delinquent accounts, each containing an array of JSON objects with the following sub fields:

  • votePubkey: <string> - Vote account public key, as base-58 encoded string
  • nodePubkey: <string> - Node public key, as base-58 encoded string
  • activatedStake: <u64> - the stake, in lamports, delegated to this vote account and active in this epoch
  • epochVoteAccount: <bool> - bool, whether the vote account is staked for this epoch
  • commission: <number>, percentage (0-100) of rewards payout owed to the vote account
  • lastVote: <u64> - Most recent slot voted on by this vote account
  • epochCredits: <array> - History of how many credits earned by the end of each epoch, as an array of arrays containing: [epoch, credits, previousCredits]

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"getVoteAccounts"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"current":[{"commission":0,"epochVoteAccount":true,"epochCredits":[[1,64,0],[2,192,64]],"nodePubkey":"B97CCUW3AEZFGy6uUg6zUdnNYvnVq5VG8PUtb2HayTDD","lastVote":147,"activatedStake":42,"votePubkey":"3ZT31jkAGhUaw8jsy4bTknwBMP8i4Eueh52By4zXcsVw"}],"delinquent":[{"commission":127,"epochVoteAccount":false,"epochCredits":[],"nodePubkey":"6ZPxeQaDo4bkZLRsdNrCzchNQr5LN9QMc9sipXv9Kw8f","lastVote":0,"activatedStake":0,"votePubkey":"CmgCk4aMS7KW1SHX3s9K5tBJ6Yng2LBaC8MFov4wx9sm"}]},"id":1}

minimumLedgerSlot

Returns the lowest slot that the node has information about in its ledger. This value may increase over time if the node is configured to purge older ledger data

Parameters:

None

Results:

  • u64 - Minimum ledger slot

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"minimumLedgerSlot"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":1234,"id":1}

requestAirdrop

Requests an airdrop of lamports to a Pubkey

Parameters:

  • <string> - Pubkey of account to receive lamports, as base-58 encoded string
  • <integer> - lamports, as a u64
  • <object> - (optional) Commitment (used for retrieving blockhash and verifying airdrop success)

Results:

  • <string> - Transaction Signature of airdrop, as base-58 encoded string

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"requestAirdrop", "params":["83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri", 50]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":"5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW","id":1}

sendTransaction

Submits a signed transaction to the cluster for processing.

Before submitting, the following preflight checks are performed:

  1. The transaction signatures are verified
  2. The transaction is simulated against the latest max confirmed bank and on failure an error will be returned. Preflight checks may be disabled if desired.

Parameters:

  • <string> - fully-signed Transaction, as base-58 encoded string
  • <object> - (optional) Configuration object containing the following field:
    • skipPreflight: <bool> - if true, skip the preflight transaction checks (default: false)

Results:

  • <string> - Transaction Signature, as base-58 encoded string

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"sendTransaction", "params":["4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv2L429BCWfyzAme5sZW8rDb14NeCQHhZbtNqfXhcp2tAnaAT"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":"2id3YC2jK9G5Wo2phDx4gJVAew8DcY5NAojnVuao8rkxwPYPe8cSwE5GzhEgJA2y8fVjDEo6iR6ykBvDxrTQrtpb","id":1}

simulateTransaction

Simulate sending a transaction

Parameters:

  • <string> - Transaction, as base-58 encoded string. The transaction must have a valid blockhash, but is not required to be signed.
  • <object> - (optional) Configuration object containing the following field:
    • sigVerify: <bool> - if true the transaction signatures will be verified (default: false)

Results:

An RpcResponse containing a TransactionStatus object The result will be an RpcResponse JSON object with value set to a JSON object with the following fields:

  • err: <object | null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
  • logs: <array | null> - Array of log messages the transaction instructions output during execution, null if simulation failed before the transaction was able to execute (for example due to an invalid blockhash or signature verification failure)

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"simulateTransaction", "params":["4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv2L429BCWfyzAme5sZW8rDb14NeCQHhZbtNqfXhcp2tAnaAT"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":{"context":{"slot":218},"value":{"confirmations":0,"err":null,"slot":218,"status":{"Ok":null}}},"id":1}

setLogFilter

Sets the log filter on the validator

Parameters:

  • <string> - the new log filter to use

Results:

  • <null>

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"setLogFilter", "params":["solana_core=debug"]}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":null,"id":1}

validatorExit

If a validator boots with RPC exit enabled (--enable-rpc-exit parameter), this request causes the validator to exit.

Parameters:

None

Results:

  • <bool> - Whether the validator exit operation was successful

Example:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1, "method":"validatorExit"}' http://localhost:8899

// Result
{"jsonrpc":"2.0","result":true,"id":1}

Subscription Websocket

After connecting to the RPC PubSub websocket at ws://<ADDRESS>/:

  • Submit subscription requests to the websocket using the methods below
  • Multiple subscriptions may be active at once
  • Many subscriptions take the optional commitment parameter, defining how finalized a change should be to trigger a notification. For subscriptions, if commitment is unspecified, the default value is "single".

accountSubscribe

Subscribe to an account to receive notifications when the lamports or data for a given account public key changes

Parameters:

  • <string> - account Pubkey, as base-58 encoded string
  • <object> - (optional) Commitment

Results:

  • <number> - Subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"accountSubscribe", "params":["CM78CPUeXjn8o3yroDHxUtKsZZgoy4GPkPPXfouKNH12"]}

{"jsonrpc":"2.0", "id":1, "method":"accountSubscribe", "params":["CM78CPUeXjn8o3yroDHxUtKsZZgoy4GPkPPXfouKNH12", {"commitment": "single"}]}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

{
  "jsonrpc": "2.0",
  "method": "accountNotification",
  "params": {
    "result": {
      "context": {
        "slot": 5199307
      },
      "value": {
        "data": "9qRxMDwy1ntDhBBoiy4Na9uDLbRTSzUS989mpwz",
        "executable": false,
        "lamports": 33594,
        "owner": "H9oaJujXETwkmjyweuqKPFtk2no4SumoU9A3hi3dC8U6",
        "rentEpoch": 635
      }
    },
    "subscription": 23784
  }
}

accountUnsubscribe

Unsubscribe from account change notifications

Parameters:

  • <number> - id of account Subscription to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"accountUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}

programSubscribe

Subscribe to a program to receive notifications when the lamports or data for a given account owned by the program changes

Parameters:

  • <string> - program_id Pubkey, as base-58 encoded string
  • <object> - (optional) Commitment

Results:

  • <integer> - Subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"programSubscribe", "params":["7BwE8yitxiWkD8jVPFvPmV7rs2Znzi4NHzJGLu2dzpUq"]}

{"jsonrpc":"2.0", "id":1, "method":"programSubscribe", "params":["7BwE8yitxiWkD8jVPFvPmV7rs2Znzi4NHzJGLu2dzpUq", {"commitment": "single"}]}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

{
  "jsonrpc": "2.0",
  "method": "programNotification",
  "params": {
    "result": {
      "context": {
        "slot": 5208469
      },
      "value": {
        "pubkey": "H4vnBqifaSACnKa7acsxstsY1iV1bvJNxsCY7enrd1hq"
        "account": {
          "data": "9qRxMDwy1ntDhBBoiy4Na9uDLbRTSzUS989m",
          "executable": false,
          "lamports": 33594,
          "owner": "7BwE8yitxiWkD8jVPFvPmV7rs2Znzi4NHzJGLu2dzpUq",
          "rentEpoch": 636
        },
      }
    },
    "subscription": 24040
  }
}

programUnsubscribe

Unsubscribe from program-owned account change notifications

Parameters:

  • <integer> - id of account Subscription to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"programUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}

signatureSubscribe

Subscribe to a transaction signature to receive notification when the transaction is confirmed On signatureNotification, the subscription is automatically cancelled

Parameters:

  • <string> - Transaction Signature, as base-58 encoded string

  • <object> - (optional) Commitment

    Default: 0, Max: MAX_LOCKOUT_HISTORY greater integers rounded down

Results:

  • integer - subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"signatureSubscribe", "params":["2EBVM6cB8vAAD93Ktr6Vd8p67XPbQzCJX47MpReuiCXJAtcjaxpvWpcg9Ege1Nr5Tk3a2GFrByT7WPBjdsTycY9b"]}

{"jsonrpc":"2.0", "id":1, "method":"signatureSubscribe", "params":["2EBVM6cB8vAAD93Ktr6Vd8p67XPbQzCJX47MpReuiCXJAtcjaxpvWpcg9Ege1Nr5Tk3a2GFrByT7WPBjdsTycY9b", {"commitment": "max"}]}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

{
  "jsonrpc": "2.0",
  "method": "signatureNotification",
  "params": {
    "result": {
      "context": {
        "slot": 5207624
      },
      "value": {
        "err": null
      }
    },
    "subscription": 24006
  }
}

signatureUnsubscribe

Unsubscribe from signature confirmation notification

Parameters:

  • <integer> - subscription id to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"signatureUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}

slotSubscribe

Subscribe to receive notification anytime a slot is processed by the validator

Parameters:

None

Results:

  • integer - subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"slotSubscribe"}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

{
  "jsonrpc": "2.0",
  "method": "slotNotification",
  "params": {
    "result": {
      "parent": 75,
      "root": 44,
      "slot": 76
    },
    "subscription": 0
  }
}

slotUnsubscribe

Unsubscribe from slot notifications

Parameters:

  • <integer> - subscription id to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"slotUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}

rootSubscribe

Subscribe to receive notification anytime a new root is set by the validator.

Parameters:

None

Results:

  • integer - subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"rootSubscribe"}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

The result is the latest root slot number.

{
  "jsonrpc": "2.0",
  "method": "rootNotification",
  "params": {
    "result": 42,
    "subscription": 0
  }
}

rootUnsubscribe

Unsubscribe from root notifications

Parameters:

  • <integer> - subscription id to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"rootUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}

voteSubscribe

Subscribe to receive notification anytime a new vote is observed in gossip. These votes are pre-consensus therefore there is no guarantee these votes will enter the ledger.

Parameters:

None

Results:

  • integer - subscription id needed to unsubscribe

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"voteSubscribe"}

// Result
{"jsonrpc": "2.0","result": 0,"id": 1}

Notification Format:

The result is the latest vote, containing its hash, a list of voted slots, and an optional timestamp.

{
  "jsonrpc": "2.0",
  "method": "voteNotification",
  "params": {
    "result": {
      "hash": "8Rshv2oMkPu5E4opXTRyuyBeZBqQ4S477VG26wUTFxUM",
      "slots": [1, 2],
      "timestamp": null
    },
    "subscription": 0
  }
}

voteUnsubscribe

Unsubscribe from vote notifications

Parameters:

  • <integer> - subscription id to cancel

Results:

  • <bool> - unsubscribe success message

Example:

// Request
{"jsonrpc":"2.0", "id":1, "method":"voteUnsubscribe", "params":[0]}

// Result
{"jsonrpc": "2.0","result": true,"id": 1}