FastNear Transactions API server

All endpoints are POST and accept JSON body. The base path is /v0.

POST /v0/transactions

Fetch raw transaction data by transaction hashes. Up to 20 hashes per request.

curl -X POST https://tx.main.fastnear.com/v0/transactions \
  -H 'Content-Type: application/json' \
  -d '{
    "tx_hashes": [
      "HV42hanyDVK3MYoW8c17Ufxw83htNEQGk93bzyQRocvS",
      "D2pt9ceGUyiGdJeeZLDd3uBGHF11DmPe4aJFMaoWMmDd"
    ]
  }'

Response:

{
  "transactions": [
    { /* raw transaction data */ },
    ...
  ]
}

POST /v0/account

Fetch account transaction history with filtering and cursor-based pagination.

Returns account_txs (list), txs_count (on first page), and resume_token (if more pages available).

Required fields:

• account_id - the account ID

Optional filters:

• is_signer, is_delegated_signer, is_real_signer, is_any_signer - signer role filters
• is_predecessor, is_explicit_refund_to - predecessor/refund filters
• is_receiver, is_real_receiver - receiver role filters
• is_function_call, is_action_arg, is_event_log - action type filters
• is_success - filter by transaction success status

Pagination:

• limit - number of results (default/max: 200)
• desc - sort order (default: true)
• from_tx_block_height / to_tx_block_height - block height range
• resume_token - cursor token from previous response

# Basic query
curl -X POST https://tx.main.fastnear.com/v0/account \
  -H 'Content-Type: application/json' \
  -d '{
    "account_id": "intents.near"
  }'

# Pagination with resume_token
curl -X POST https://tx.main.fastnear.com/v0/account \
  -H 'Content-Type: application/json' \
  -d '{
    "account_id": "intents.near",
    "resume_token": "796557291984781314"
  }'

# With filters
curl -X POST https://tx.main.fastnear.com/v0/account \
  -H 'Content-Type: application/json' \
  -d '{
    "account_id": "intents.near",
    "is_real_signer": true,
    "is_success": true,
    "limit": 50
  }'

# Block height range
curl -X POST https://tx.main.fastnear.com/v0/account \
  -H 'Content-Type: application/json' \
  -d '{
    "account_id": "intents.near",
    "from_tx_block_height": 150000000,
    "to_tx_block_height": 151000000,
    "desc": false
  }'

Response (first page):

{
  "txs_count": 81278,
  "account_txs": [
    {
      "account_id": "...",
      "transaction_hash": "...",
      "tx_block_height": ...,
      "tx_block_timestamp": "...",
      "tx_index": ...,
      "is_signer": ...,
      "is_delegated_signer": ...,
      "is_real_signer": ...,
      "is_any_signer": ...,
      "is_predecessor": ...,
      "is_explicit_refund_to": ...,
      "is_receiver": ...,
      "is_real_receiver": ...,
      "is_function_call": ...,
      "is_action_arg": ...,
      "is_event_log": ...,
      "is_success": ...
    },
    ...
  ],
  "resume_token": "..."  // present if more pages available
}

POST /v0/block

Fetch a block by height or hash. Optionally include transactions and/or receipts.

Required fields:

• block_id - block height (number) or block hash (string)

Optional fields:

• with_transactions - include block transactions (default: false)
• with_receipts - include block receipts (default: false)

# By block height
curl -X POST https://tx.main.fastnear.com/v0/block \
  -H 'Content-Type: application/json' \
  -d '{
    "block_id": 130000000
  }'

# By block hash
curl -X POST https://tx.main.fastnear.com/v0/block \
  -H 'Content-Type: application/json' \
  -d '{
    "block_id": "EeQ63DqKGRz1JPGQG7W9BpiGKmrF8ESn9nHr3djL8s1e"
  }'

# With transactions and receipts
curl -X POST https://tx.main.fastnear.com/v0/block \
  -H 'Content-Type: application/json' \
  -d '{
    "block_id": 130000000,
    "with_transactions": true,
    "with_receipts": true
  }'

Response (with transactions and receipts):

{
  "block": {
    "block_height": ...,
    "prev_block_height": ...,
    "block_hash": "...",
    "prev_block_hash": "...",
    "block_timestamp": "...",
    "epoch_id": "...",
    "next_epoch_id": "...",
    "chunks_included": ...,
    "author_id": "...",
    "protocol_version": ...,
    "gas_price": "...",
    "block_ordinal": ...,
    "total_supply": "...",
    "num_transactions": ...,
    "num_receipts": ...,
    "gas_burnt": "...",
    "tokens_burnt": "..."
  },
  "block_txs": [    // only if with_transactions: true
    {
      "transaction_hash": "...",
      "signer_id": "...",
      "tx_block_height": ...,
      "tx_index": ...,
      "tx_block_hash": "...",
      "tx_block_timestamp": "...",
      "last_block_height": ...,
      "is_completed": ...,
      "shard_id": ...,
      "receiver_id": "...",
      "signer_public_key": "...",
      "priority_fee": ...,
      "nonce": ...,
      "is_relayed": ...,
      "real_signer_id": "...",
      "real_receiver_id": "...",
      "is_success": ...,
      "gas_burnt": ...,
      "tokens_burnt": "..."
    },
    ...
  ],
  "block_receipts": [    // only if with_receipts: true
    {
      "receipt_id": "...",
      "block_height": ...,
      "block_timestamp": "...",
      "receipt_index": ...,
      "appear_block_height": ...,
      "appear_receipt_index": ...,
      "transaction_hash": "...",
      "tx_block_height": ...,
      "tx_block_timestamp": "...",
      "tx_index": ...,
      "predecessor_id": "...",
      "receiver_id": "...",
      "receipt_type": "...",
      "priority": ...,
      "shard_id": ...,
      "is_success": ...
    },
    ...
  ]
}

POST /v0/blocks

Fetch a list of blocks with optional height range and pagination.

Optional fields:

• from_block_height / to_block_height - block height range
• limit - number of results (default/max: 100)
• desc - sort order (default: true)

# Latest blocks
curl -X POST https://tx.main.fastnear.com/v0/blocks \
  -H 'Content-Type: application/json' \
  -d '{}'

# With range and limit
curl -X POST https://tx.main.fastnear.com/v0/blocks \
  -H 'Content-Type: application/json' \
  -d '{
    "from_block_height": 130000000,
    "to_block_height": 130000100,
    "limit": 10,
    "desc": false
  }'

Response:

{
  "blocks": [
    {
      "block_height": ...,
      "prev_block_height": ...,
      "block_hash": "...",
      "prev_block_hash": "...",
      "block_timestamp": "...",
      "epoch_id": "...",
      "next_epoch_id": "...",
      "chunks_included": ...,
      "author_id": "...",
      "protocol_version": ...,
      "gas_price": "...",
      "block_ordinal": ...,
      "total_supply": "...",
      "num_transactions": ...,
      "num_receipts": ...,
      "gas_burnt": "...",
      "tokens_burnt": "..."
    },
    ...
  ]
}

POST /v0/receipt

Fetch a receipt by ID. Returns the receipt details and the associated raw transaction.

Required fields:

• receipt_id - the receipt hash

curl -X POST https://tx.main.fastnear.com/v0/receipt \
  -H 'Content-Type: application/json' \
  -d '{
    "receipt_id": "H6Roj3A2SNn7HJXdigLPDHiz2kcob4MHwLg3nnDEH2VZ"
  }'

Response:

{
  "receipt": {
    "receipt_id": "...",
    "block_height": ...,
    "block_timestamp": "...",
    "receipt_index": ...,
    "appear_block_height": ...,
    "appear_receipt_index": ...,
    "transaction_hash": "...",
    "tx_block_height": ...,
    "tx_block_timestamp": "...",
    "tx_index": ...,
    "predecessor_id": "...",
    "receiver_id": "...",
    "receipt_type": "...",
    "priority": ...,
    "shard_id": ...,
    "is_success": ...
  },
  "transaction": { /* raw transaction data */ }
}