Fireblocks

Fireblocks Transactions API

Create, cancel, drop, and query digital-asset transactions across all supported chains. Every transaction passes the workspace Policy Engine, is signed by the MPC quorum, and is broadcast under Fireblocks' fee-bump-and-rebroadcast logic. Supports transfers, raw signings, typed-message signings, contract calls, drop-and-replace, fee estimation, validate-address, and approval-request management.

GitHub OpenAPI

Operations 11

GET /transactions Get transaction history #
POST /transactions Create a new transaction #
POST /transactions/estimate_fee Estimate transaction fee #
GET /transactions/{txId} Get a specific transaction by Fireblocks transaction ID #
GET /transactions/external_tx_id/{externalTxId} Get a specific transaction by external transaction ID #
POST /transactions/{txId}/set_confirmation_threshold Set confirmation threshold by Fireblocks Transaction ID #
POST /transactions/{txId}/drop Drop ETH (EVM) transaction by ID #
POST /transactions/{txId}/cancel Cancel a transaction #
POST /transactions/{txId}/freeze Freeze a transaction #
POST /transactions/{txId}/unfreeze Unfreeze a transaction #
POST /txHash/{txHash}/set_confirmation_threshold Set confirmation threshold by transaction hash #

Documentation

📖
Documentation
https://developers.fireblocks.com/reference/api-overview

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/fireblocks/refs/heads/main/openapi/fireblocks-transactions-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/fireblocks/refs/heads/main/json-schema/fireblocks-transaction-schema.json

Other Resources

🔗
JSONLD
https://raw.githubusercontent.com/api-evangelist/fireblocks/refs/heads/main/json-ld/fireblocks-context.jsonld

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OpenAPI Specification

fireblocks-transactions-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Fireblocks Blockchains and Assets Approval Requests…
  description: 'Fireblocks provides a suite of applications to manage digital asset operations and a complete development platform to build your business on the blockchain.


    - Visit our website for more information: Fireblocks Website

    - Visit our developer docs: Fireblocks DevPortal'
  version: 1.8.0
  contact:
    email: developers@fireblocks.com
servers:
- url: https://api.fireblocks.io/v1
  description: Fireblocks Production Environment Base URL
- url: https://sandbox-api.fireblocks.io/v1
  description: Fireblocks Sandbox Environment Base URL
security: []
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/fireblocks/refs/heads/main/openapi/fireblocks-transactions-api-openapi.yml