​
getTransaction

POST — JSON-RPC Fetches detailed information about a specific transaction using its signature.
​
params[0]
string
required
Transaction signature as a base-58 encoded string.
​
params[1]
object
Configuration object:
  • encoding (string) — json, jsonParsed, base58, base64
  • commitment (string) — finalized or confirmed
  • maxSupportedTransactionVersion (integer)
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getTransaction","params":["2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oeYYd8Tm5ATGQ7ufRYM5jnFdoP8bHKevSX1Tc3FRxPpM",{"encoding":"jsonParsed","maxSupportedTransactionVersion":0}]}'

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getTransactionCount

POST — JSON-RPC Returns the current transaction count from the ledger.
​
params[0]
object
Configuration object with optional commitment and minContextSlot.
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getTransactionCount"}'

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getSignatureStatuses

POST — JSON-RPC Returns the statuses of a list of transaction signatures (max 256).
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params[0]
array
required
Array of transaction signatures as base-58 encoded strings (max 256).
​
params[1]
object
Configuration object:
  • searchTransactionHistory (boolean) — search beyond recent slots
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSignatureStatuses","params":[["5VERv8NMvzbJMEkV8xnrLkEaWRtSz9CosKDYjCJjBRnbJLgp8uirBgmQpjKhoR4tjF3ZpRzrFmBV6UjKdiSZkQUW"],{"searchTransactionHistory":true}]}'

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getSignaturesForAddress

POST — JSON-RPC Returns transaction signatures for confirmed transactions that include the given account address.
​
params[0]
string
required
Account address as a base-58 encoded string.
​
params[1]
object
Configuration object:
  • commitment (string)
  • limit (integer) — max results (1-1000, default 1000)
  • before (string) — start searching before this signature
  • until (string) — search until this signature
  • minContextSlot (integer) — minimum slot for evaluation
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSignaturesForAddress","params":["Vote111111111111111111111111111111111111111",{"limit":1}]}'

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sendTransaction

POST — JSON-RPC Submits a signed transaction to the cluster for processing.
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params[0]
string
required
Fully-signed transaction as an encoded string.
​
params[1]
object
Configuration object:
  • encoding (string) — base58 or base64 (default: base58)
  • skipPreflight (boolean) — skip preflight checks (default: false)
  • preflightCommitment (string) — commitment for preflight (default: finalized)
  • maxRetries (integer) — max node retry attempts
  • minContextSlot (integer) — min slot for preflight evaluation
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"sendTransaction","params":["4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsaBCncVG7BFggS8w9snUts67BSh3EqKpXLUm5UMHfD7ZBe9GhARjbNQMLJ1QD3Spr6oMTBU6EhdB4RD8CP2xUxr2u3d6fos36PD98XS6oX8TQjLpsMwncs5DAMiD4nNnR8NBfyghGCWvCVifVwvA8B8TJxE1aiyiv2L429BCWfyzAme5sZW8rDb14NeCQHhZbtNqfXhcp2tAnaAT",{"encoding":"base58"}]}'
Transactions must be signed before submission. The sendTransaction method does not sign transactions.

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simulateTransaction

POST — JSON-RPC Simulates sending a transaction without requiring a valid signature. Useful for testing transaction execution.
​
params[0]
string
required
Transaction as an encoded string.
​
params[1]
object
Configuration object:
  • commitment (string) — commitment level
  • sigVerify (boolean) — verify signatures (conflicts with replaceRecentBlockhash)
  • replaceRecentBlockhash (boolean) — replace blockhash with latest
  • encoding (string) — base58 or base64
  • innerInstructions (boolean) — return inner instructions in result
  • minContextSlot (integer) — minimum slot for evaluation
  • accounts (object) — { encoding, addresses } to return account state
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"simulateTransaction","params":["AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCph/IAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",{"encoding":"base64","replaceRecentBlockhash":true}]}'
​
result.value
object