🧩Solana RPC Methods
Interact with Solana nodes directly using HTTP and WebSocket-based JSON RPC methods.
State Commitment Configuration Summary
Solana nodes use a commitment level set by the client to decide which bank state to query during preflight checks and transaction processing. Commitment levels reflect how finalized a block is and affect how likely that state is to change.
Available commitment levels (from most to least finalized):
finalized: Block confirmed by a supermajority and considered final (maximum lockout).
confirmed: Block directly voted on by a supermajority, based on gossip and replay; supports optimistic confirmation.
processed: Most recent block seen by the node; may be skipped by the cluster.
Recommendations:
Use confirmed for processing dependent transactions (balance of speed and safety).
Use finalized for maximum safety against rollback.
Default is finalized if no commitment is specified.
Only API methods that query bank state accept the
commitment
parameter, as indicated in the API reference.
RPC Response Structure
Many methods that take a commitment parameter return an RpcResponse JSON object comprised of two parts:
context
: An RpcResponseContext JSON structure including aslot
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.
Filter Criteria Summary
Some RPC methods allow a filters
object to pre-filter program account data returned in the response.
Supported filters:
memcmp: Compares a specific byte sequence at a given offset within the account data.
offset
(usize): Position in the data to begin comparison.bytes
(string): The byte sequence to match (encoded).encoding
(string):"base58"
or"base64"
encoding.⚠️
base64
support is only available in solana-core v1.14.0+. Omit this field when querying older nodes.
dataSize (u64): Matches accounts with a specific data length.
These filters help reduce unnecessary data by only returning accounts that meet the specified criteria.
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