Transactions

The RPC API exposes several methods for broadcasting signed transactions and tracking their execution. All transaction methods accept a base64-encoded signed_tx_base64 payload. Status methods accept either the same payload or a tx_hash + sender_account_id pair.

Quick Reference

Method	Purpose
`send_tx`	Broadcast a signed transaction and wait for the result
`tx`	Get the status of a previously broadcast transaction
`tx_status`	Like `tx`, but also returns receipt details
`EXPERIMENTAL_receipt`	Fetch a single receipt by id
`broadcast_tx_async`	Broadcast and return immediately with the transaction hash
`broadcast_tx_commit`	Broadcast and wait until the transaction is included in a block

Prefer send_tx, tx, and tx_status for new integrations. The broadcast_tx_async and broadcast_tx_commit methods are kept for backward compatibility but offer less control over when the call returns. EXPERIMENTAL_tx_status is a deprecated alias of tx_status.

The `wait_until` Field

send_tx, tx, and tx_status accept an optional wait_until field that controls how long the RPC waits before returning a response. Each value waits for a stricter execution milestone than the previous one — pick the lowest level that satisfies your use case so you don’t pay extra latency.

Value	Returns when…	Typical use
`NONE`	The transaction is queued but not yet included in a block.	Fire-and-forget broadcasts where you only need the hash.
`INCLUDED`	The transaction is included in a block (the block may not be finalized).	UI optimism: you want to confirm the tx hit the chain.
`EXECUTED_OPTIMISTIC` (default)	Included + all non-refund receipts have executed (blocks may still not be finalized).	Default for most apps — you can read the result.
`INCLUDED_FINAL`	Included in a finalized block.	You need finality but don’t care about receipts.
`EXECUTED`	Finalized + all non-refund receipts executed.	Strong correctness without waiting for refund receipts.
`FINAL`	Finalized + all receipts (including refunds) finalized.	Accounting and cross-chain settlement, where refund-tracking matters.

If the field is omitted, the RPC behaves as if EXECUTED_OPTIMISTIC was passed.

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "send_tx",
  "params": {
    "signed_tx_base64": "DwAAAHNlbmRlci50ZXN0bmV0...",
    "wait_until": "FINAL"
  }
}

Higher wait_until levels can take several seconds. If your client has a short timeout, prefer INCLUDED or EXECUTED_OPTIMISTIC and poll tx for the stricter level.

Send Transaction

Broadcasts a signed transaction and waits for the requested execution milestone before returning.

method: send_tx
params: signed_tx_base64, optional wait_until

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "send_tx",
  "params": {
    "signed_tx_base64": "DwAAAHNlbmRlci50ZXN0bmV0...",
    "wait_until": "EXECUTED_OPTIMISTIC"
  }
}

import { JsonRpcProvider } from "near-api-js";

const provider = new JsonRpcProvider({ url: "https://test.rpc.fastnear.com" });

const response = await provider.sendTransactionUntil(
  signedTransaction,
  'EXECUTED_OPTIMISTIC',
);

http POST https://rpc.testnet.near.org \
  jsonrpc=2.0 id=dontcare method=send_tx \
  params:='{"signed_tx_base64":"DwAAAHNlbmRlci50ZXN0bmV0...","wait_until":"EXECUTED_OPTIMISTIC"}'

Successful contract return values appear as base64-encoded status.SuccessValue. See the decoded result reference to read them.

Transaction Status

Returns the status of a previously submitted transaction.

method: tx
params: either signed_tx_base64, or tx_hash + sender_account_id. Optional wait_until.

JSON (by hash)
JavaScript

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "tx",
  "params": {
    "tx_hash": "6zgh2u9DqHHiXzdy9ouTP7oGky2T4nugbhqsK7wQHnZS",
    "sender_account_id": "sender.testnet",
    "wait_until": "FINAL"
  }
}

import { JsonRpcProvider } from "near-api-js";

const provider = new JsonRpcProvider({ url: "https://test.rpc.fastnear.com" });

const response = await provider.txStatus(
  '6zgh2u9DqHHiXzdy9ouTP7oGky2T4nugbhqsK7wQHnZS',
  'sender.testnet',
  'FINAL',
);

Transaction Status with Receipts

tx_status returns the same payload as tx plus the full set of receipts produced by the transaction. Useful when debugging cross-contract calls.

method: tx_status
params: same as tx

This method was previously called EXPERIMENTAL_tx_status. That name still works as a deprecated alias with identical request and response types, so existing clients keep functioning — but new code should use tx_status.

Receipt by Id

Fetches a single receipt by its id.

method: EXPERIMENTAL_receipt
params: receipt_id

Broadcast Async

Broadcasts a signed transaction and returns immediately with the transaction hash. Equivalent to send_tx with wait_until: "NONE".

method: broadcast_tx_async
params: a single positional string — the base64-encoded signed transaction.

Broadcast Commit

Broadcasts a signed transaction and waits for it to be included in a block. Equivalent to send_tx with wait_until: "EXECUTED_OPTIMISTIC".

method: broadcast_tx_commit
params: a single positional string — the base64-encoded signed transaction.

Error Handling

Error Code	Description	Solution
`INVALID_TRANSACTION`	The signed transaction failed validation.	Re-sign with the correct nonce, block hash, and signer key.
`EXPIRED_TRANSACTION`	The reference block hash is too old.	Refresh `block_hash` and re-sign.
`TIMEOUT_ERROR`	The chosen `wait_until` level was not reached before the RPC’s deadline.	Lower `wait_until` and poll `tx`, or use an archival/dedicated provider.
`UNKNOWN_TRANSACTION`	No record of the requested transaction hash.	Verify the hash and `sender_account_id`.
`INVALID_SIGNATURE`	The signature does not match the signer’s key.	Sign again with the matching access key.

Query

Accounts

Access Keys

Smart Contracts

Gas Price

Blocks & Chunks

Network

Gas & Config

Light Client

Maintenance & Storage

Transactions

Quick Reference

The `wait_until` Field

Send Transaction

Transaction Status

Transaction Status with Receipts

Receipt by Id

Broadcast Async

Broadcast Commit

Error Handling

​Quick Reference

​The wait_until Field

​Send Transaction

​Transaction Status

​Transaction Status with Receipts

​Receipt by Id

​Broadcast Async

​Broadcast Commit

​Error Handling

Quick Reference

The `wait_until` Field

Send Transaction

Transaction Status

Transaction Status with Receipts

Receipt by Id

Broadcast Async

Broadcast Commit

Error Handling