Block / Chunk - NEAR Docs

The RPC API enables you to query the network and get details about specific blocks or chunks.

Quick Reference

Method	Description	Parameters
`block`	Get block details by height, hash, or finality	`finality` OR `block_id`
`block_effects`	Get changes in a specific block	`finality` OR `block_id`
`chunk`	Get chunk details by chunk_id or block_id + shard_id	`chunk_id` OR `block_id` + `shard_id`

Block Details

Queries network and returns block for given height or hash. You can also use finality param to return latest block details. Note: You may choose to search by a specific block or finality, you cannot choose both.

method: block
params: finality OR block_id

by finality
by block height
by block hash

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "finality": "final"
  }
}

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

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

const response = await provider.block({
  finality: 'final',
});

http POST https://rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block \
  params:='{"finality": "final"}'

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "block_id": 187310138
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.block({
  blockId: 187310138,
});

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block \
  params:='{"block_id": 187310138}'

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "block_id": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w"
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.block({
  blockId: '6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w',
});

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block \
  params:='{"block_id": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w"}'

Example response

{
  "jsonrpc": "2.0",
  "result": {
    "author": "node2",
    "chunks": [
      {
        "chunk_hash": "CzPafxtJmM1FnRoasKWAVhceJzZzkz9RKUBQQ4kY9V1v",
        "shard_id": 0,
        "gas_limit": 1000000000000000,
        "gas_used": 0,
        "height_created": 187310138,
        "height_included": 187310138
      }
    ],
    "header": {
      "hash": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w",
      "height": 187310138,
      "timestamp": 1739254177539033760,
      "gas_price": "100000000",
      "latest_protocol_version": 73
    }
  },
  "id": "dontcare"
}

Block Effects

Returns changes in a block for given block height or hash. Includes changes like account_touched, access_key_touched, data_touched, contract_code_touched.

method: block_effects
params: finality OR block_id

by finality
by block height
by block hash

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block_effects",
  "params": {
    "finality": "final"
  }
}

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

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

const response = await provider.blockChanges({
  finality: 'final',
});

http POST https://rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block_effects \
  params:='{"finality": "final"}'

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block_effects",
  "params": {
    "block_id": 187310138
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.blockChanges({
  blockId: 187310138,
});

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block_effects \
  params:='{"block_id": 187310138}'

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block_effects",
  "params": {
    "block_id": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w"
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.blockChanges({
  blockId: '6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w',
});

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=block_effects \
  params:='{"block_id": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w"}'

Example response

{
  "jsonrpc": "2.0",
  "result": {
    "block_hash": "6RWmTYhXCzjMjoY3Mz1rfFcnBm8E6XeDDbFEPUA4sv1w",
    "block_effects": [
      { "account_id": "account.rpc-examples.testnet", "type": "account_touched" },
      { "account_id": "ping-account.testnet", "type": "account_touched" },
      { "account_id": "account.rpc-examples.testnet", "type": "access_key_touched" },
      { "account_id": "dev2-nsp.testnet", "type": "data_touched" }
    ]
  },
  "id": "dontcare"
}

Chunk Details

Returns details of a specific chunk. You can run a block details query to get a valid chunk hash.

method: chunk
params: chunk_id OR block_id + shard_id

by chunk_id
by block_id + shard_id

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "chunk",
  "params": {
    "chunk_id": "CzPafxtJmM1FnRoasKWAVhceJzZzkz9RKUBQQ4kY9V1v"
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.chunk(
  'CzPafxtJmM1FnRoasKWAVhceJzZzkz9RKUBQQ4kY9V1v',
);

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=chunk \
  params:='{"chunk_id": "CzPafxtJmM1FnRoasKWAVhceJzZzkz9RKUBQQ4kY9V1v"}'

JSON
JavaScript
HTTPie

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "chunk",
  "params": {
    "block_id": 187310138,
    "shard_id": 0
  }
}

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

const provider = new JsonRpcProvider({
    url: "https://archival-rpc.testnet.near.org",
});

const response = await provider.chunk([187310138, 0]);

http POST https://archival-rpc.testnet.near.org \
  jsonrpc=2.0 \
  id=dontcare \
  method=chunk \
  params:='{"block_id": 187310138, "shard_id": 0}'

Example response

{
  "jsonrpc": "2.0",
  "result": {
    "author": "kiln.pool.f863973.m0",
    "header": {
      "chunk_hash": "CzPafxtJmM1FnRoasKWAVhceJzZzkz9RKUBQQ4kY9V1v",
      "shard_id": 0,
      "gas_limit": 1000000000000000,
      "gas_used": 0,
      "height_created": 187310138,
      "height_included": 187310138
    },
    "receipts": [],
    "transactions": [
      {
        "hash": "J3KbUXF9YPu2eGnbDCACxGvmMDZMdP7acGYhVLHGu9y2",
        "signer_id": "account.rpc-examples.testnet",
        "receiver_id": "contract.rpc-examples.testnet"
      }
    ]
  },
  "id": "dontcare"
}

Error Handling

Error Code	Description	Solution
`UNKNOWN_BLOCK`	Block not found or garbage-collected	Check block validity; use archival node for old blocks
`UNKNOWN_CHUNK`	Chunk not found in database	Verify chunk ID; use archival node for old chunks
`INVALID_SHARD_ID`	Shard ID does not exist	Provide valid shard ID for existing shard
`NOT_SYNCED_YET`	Node still syncing	Wait for sync completion or use different node
`PARSE_ERROR`	Invalid request parameters	Check parameter format and completeness
`INTERNAL_ERROR`	Server-side issue	Retry request or try different RPC endpoint

​Quick Reference

​Block Details

​Block Effects

​Chunk Details

​Error Handling

Quick Reference

Block Details

Block Effects

Chunk Details

Error Handling