Add documentation for JSON parsing (#27268)

* Add documentation about json parsing

* Link jsonParsed to info section

* Include version information

docs/src/developing/clients/jsonrpc-api.md

@@ -205,6 +205,28 @@ Many methods that take a commitment parameter return an RpcResponse JSON object
 - `context` : An RpcResponseContext JSON structure including a `slot` field at which the operation was evaluated.
 - `value` : The value returned by the operation itself.
 
+#### Parsed Responses
+
+Some methods support an `encoding` parameter, and can return account or
+instruction data in parsed JSON format if `"encoding":"jsonParsed"` is requested
+and the node has a parser for the owning program. Solana nodes currently support
+JSON parsing for the following native and SPL programs:
+
+| Program | Account State | Instructions |
+| --- | --- | --- |
+| Address Lookup | v1.12.0 |   |
+| BPF Loader | n/a | stable |
+| BPF Upgradeable Loader | stable | stable |
+| Config | X |   |
+| SPL Associated Token Account | n/a | stable |
+| SPL Memo | n/a | stable |
+| SPL Token | stable | stable |
+| SPL Token 2022 | stable | stable |
+| Stake | stable | stable |
+| Vote | stable | stable |
+
+The list of account parsers can be found [here](https://github.com/solana-labs/solana/blob/master/account-decoder/src/parse_account_data.rs), and instruction parsers [here](https://github.com/solana-labs/solana/blob/master/transaction-status/src/parse_instruction.rs).
+
 ## Health Check
 
 Although not a JSON RPC API, a `GET /health` at the RPC HTTP Endpoint provides a
@@ -233,7 +255,7 @@ Returns all information associated with the account of provided Pubkey
     "base58" is limited to Account data of less than 129 bytes.
     "base64" will return base64 encoded data for Account data of any size.
     "base64+zstd" compresses the Account data using [Zstandard](https://facebook.github.io/zstd/) and base64-encodes the result.
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58", "base64" or "base64+zstd" encodings.
   - (optional) `minContextSlot: <number>` - set the minimum slot that the request can be evaluated at.
 
@@ -388,7 +410,7 @@ Returns identity and transaction information about a confirmed block in the ledg
 - `<u64>` - slot, as u64 integer
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) `encoding: <string>` - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (_slow_), "base64". If parameter not provided, the default encoding is "json".
-    "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
   - (optional) `transactionDetails: <string>` - level of transaction detail to return, either "full", "signatures", or "none". If parameter not provided, the default detail level is "full".
   - (optional) `rewards: bool` - whether to populate the `rewards` array. If parameter not provided, the default includes rewards.
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment); "processed" is not supported. If parameter not provided, the default is "finalized".
@@ -1753,7 +1775,7 @@ Returns the account information for a list of Pubkeys.
     "base58" is limited to Account data of less than 129 bytes.
     "base64" will return base64 encoded data for Account data of any size.
     "base64+zstd" compresses the Account data using [Zstandard](https://facebook.github.io/zstd/) and base64-encodes the result.
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58", "base64" or "base64+zstd" encodings.
   - (optional) `minContextSlot: <number>` - set the minimum slot that the request can be evaluated at.
 
@@ -1896,7 +1918,7 @@ Returns all accounts owned by the provided program Pubkey
     "base58" is limited to Account data of less than 129 bytes.
     "base64" will return base64 encoded data for Account data of any size.
     "base64+zstd" compresses the Account data using [Zstandard](https://facebook.github.io/zstd/) and base64-encodes the result.
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58", "base64" or "base64+zstd" encodings.
   - (optional) `filters: <array>` - filter results using up to 4 [filter objects](jsonrpc-api.md#filters); account must meet all filter criteria to be included in results
   - (optional) `withContext: bool` - wrap the result in an RpcResponse JSON object.
@@ -2612,7 +2634,7 @@ Returns all SPL Token accounts by approved Delegate.
     "base58" is limited to Account data of less than 129 bytes.
     "base64" will return base64 encoded data for Account data of any size.
     "base64+zstd" compresses the Account data using [Zstandard](https://facebook.github.io/zstd/) and base64-encodes the result.
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58", "base64" or "base64+zstd" encodings.
   - (optional) `minContextSlot: <number>` - set the minimum slot that the request can be evaluated at.
 
@@ -2718,7 +2740,7 @@ Returns all SPL Token accounts by token owner.
     "base58" is limited to Account data of less than 129 bytes.
     "base64" will return base64 encoded data for Account data of any size.
     "base64+zstd" compresses the Account data using [Zstandard](https://facebook.github.io/zstd/) and base64-encodes the result.
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to "base64" encoding, detectable when the `data` field is type `<string>`.
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58", "base64" or "base64+zstd" encodings.
   - (optional) `minContextSlot: <number>` - set the minimum slot that the request can be evaluated at.
 
@@ -2921,7 +2943,7 @@ Returns transaction details for a confirmed transaction
 - `<string>` - transaction signature as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) `encoding: <string>` - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (_slow_), "base64". If parameter not provided, the default encoding is "json".
-    "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment); "processed" is not supported. If parameter not provided, the default is "finalized".
   - (optional) `maxSupportedTransactionVersion: <number>` - set the max transaction version to return in responses. If the requested transaction is a higher version, an error will be returned. If this parameter is omitted, only legacy transactions will be returned, and any versioned transaction will prompt the error.
 
@@ -3446,7 +3468,7 @@ Simulate sending a transaction
     (default: false, conflicts with `sigVerify`)
   - `accounts: <object>` - (optional) Accounts configuration object containing the following fields:
     - `encoding: <string>` - (optional) encoding for returned Account data, either "base64" (default), "base64+zstd" or "jsonParsed".
-      "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`.
+      ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`.
     - `addresses: <array>` - An array of accounts to return, as base-58 encoded strings
   - (optional) `minContextSlot: <number>` - set the minimum slot that the request can be evaluated at.
 
@@ -3538,7 +3560,7 @@ Subscribe to an account to receive notifications when the lamports or data for a
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - `<object>` - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
   - `encoding: <string>` - encoding for Account data, either "base58" (_slow_), "base64", "base64+zstd" or "jsonParsed".
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`.
 
 #### Results:
 
@@ -3689,7 +3711,7 @@ Subscribe to receive notification anytime a new block is Confirmed or Finalized.
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
   - (optional) `encoding: <string>` - encoding for Account data, either "base58" (_slow_), "base64", "base64+zstd" or "jsonParsed".
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to base64 encoding, detectable when the `data` field is type `<string>`. Default is "base64".
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to base64 encoding, detectable when the `data` field is type `<string>`. Default is "base64".
   - (optional) `transactionDetails: <string>` - level of transaction detail to return, either "full", "signatures", or "none". If parameter not provided, the default detail level is "full".
   - (optional) `showRewards: bool` - whether to populate the `rewards` array. If parameter not provided, the default includes rewards.
 
@@ -4083,7 +4105,7 @@ Subscribe to a program to receive notifications when the lamports or data for a
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
   - `encoding: <string>` - encoding for Account data, either "base58" (_slow_), "base64", "base64+zstd" or "jsonParsed".
-    "jsonParsed" encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to base64 encoding, detectable when the `data` field is type `<string>`.
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific state parsers to return more human-readable and explicit account state data. If "jsonParsed" is requested but a parser cannot be found, the field falls back to base64 encoding, detectable when the `data` field is type `<string>`.
   - (optional) `filters: <array>` - filter results using various [filter objects](jsonrpc-api.md#filters); account must meet all filter criteria to be included in results
 
 #### Results:
@@ -4672,7 +4694,7 @@ Returns identity and transaction information about a confirmed block in the ledg
 - `<u64>` - slot, as u64 integer
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) `encoding: <string>` - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (_slow_), "base64". If parameter not provided, the default encoding is "json".
-    "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
   - (optional) `transactionDetails: <string>` - level of transaction detail to return, either "full", "signatures", or "none". If parameter not provided, the default detail level is "full".
   - (optional) `rewards: bool` - whether to populate the `rewards` array. If parameter not provided, the default includes rewards.
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment); "processed" is not supported. If parameter not provided, the default is "finalized".
@@ -4980,7 +5002,7 @@ Returns transaction details for a confirmed transaction
 - `<string>` - transaction signature as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) `encoding: <string>` - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (_slow_), "base64". If parameter not provided, the default encoding is "json".
-    "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
+    ["jsonParsed" encoding](jsonrpc-api.md#parsed-responses) attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment); "processed" is not supported. If parameter not provided, the default is "finalized".
 
 #### Results: