Blockchain.com

Blockchain.com WebSocket APIs

Real-time WebSocket APIs covering two distinct surfaces — the Bitcoin / blockchain.info explorer socket (unconfirmed transactions, new blocks, per-address activity) and the Blockchain.com Exchange mercury-gateway socket (heartbeat, ticker, L2/L3 order books, prices, symbols, trades, plus authenticated balances and trading).

GitHub

Documentation

📖
Documentation
Explorer WebSocket
📖
Documentation
Exchange WebSocket

Specifications

⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/blockchain.com/refs/heads/main/asyncapi/blockchain-com-asyncapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/blockchaincom-websocket-apis"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

AsyncAPI Specification

blockchain-com-asyncapi.yml Raw ↑