Blockchain API

AI Compatibility

Four ways in — MCP servers, a CLI, agent skills and a REST API. 19 blockchains, one API key, and the credit cost reported on every call. AI Compatibility by Crypto APIs gives agents native access to 19 blockchains through whichever surface fits: 60 MCP tools across 14 domains, a 47-command CLI that reports its credit cost on every call, three agent skills that teach an assistant the API patterns, and a 143-path REST API. Works with Claude, Cursor, Codex, VS Code Copilot and n8n. Signing stays on your machine — the platform never takes a private key.

Read the docs Book a call

60 MCP tools across 14 domains 47-command CLI, 19 blockchains Agent skills for Claude, Cursor, Codex

# the CLI
npm i -g @cryptoapis-io/cli

# agent skills
npx skills add CryptoAPIs-io/cryptoapis-skills -y -g

Key Functionalities Of Crypto APIs

AI Compatibility – MCP for Blockchain

Bring blockchain data into your AI stack with no glue code. Call 60 MCP tools from any MCP host, drive 47 CLI commands from a terminal, install the agent skills so an assistant gets the call right first time, or go straight at the REST API.

MCP Servers

14 production-ready Model Context Protocol servers that expose Crypto APIs endpoints to any MCP-compatible AI host. Drop-in install for Claude Desktop, Cursor, Continue, Cline and any other MCP client — no glue code, no custom integrations. Each server is independently versioned, scoped to a clear domain (addresses, transactions, blocks, market data, smart contracts, fees, wallets, and more), and ready for production use.

Read MCP Servers docs

n8n MCP Client

A native n8n node that turns any Crypto APIs MCP server into a workflow step. Compose agents visually, mix MCP calls with HTTP, databases, queues and email, and ship production AI workflows that read on-chain data, prepare transactions and react to events — all without writing integration code. Works in both self-hosted and n8n Cloud.

Read n8n MCP Client docs

Command-line interface

47 commands across 19 blockchains. JSON on stdout, credits reported per call. Run agent-prompt --json and an agent gets the whole command space — every action, flag, enum and cost — instead of discovering it by trial.

npm i -g @cryptoapis-io/cli View Docs

Agent skills

Three skills teaching an assistant how the platform is meant to be used, so it writes a correct call the first time. One for the CLI, one for MCP, one for the REST API — each says when to use it and when to reach for another.

npx skills add CryptoAPIs-io/cryptoapis-skills -y -g View Docs

Your keys never reach us

Signing is deliberately excluded from the CLI and kept out of tool-call transcripts, because a private key on a command line ends up in shell history, ps output and CI logs. Prepare the transaction with us, sign it locally in your own process, then broadcast it. The platform never takes a key.

prepare → sign locally → broadcast

Agents that pay for themselves

x402 lets an agent pay a seller's API per request, with no subscription to that seller and no shared key. Our facilitator settles USDC on Base and Solana today, with more networks to follow. x402 runs on a paid Crypto APIs subscription.

x402 Payments

FAQ

Frequently Asked Questions

Does Crypto APIs work with Claude, Cursor, and n8n?

Yes. Crypto APIs ships production-ready Model Context Protocol (MCP) servers that connect to Claude, Cursor, Continue, Cline, and any host that speaks MCP, with a drop-in install and no glue code. It also provides an n8n MCP Client node so you can add blockchain data access as a step in visual n8n workflows alongside HTTP, database, queue, and email nodes.

What can the MCP servers actually do — is it read-only?

No, it goes beyond reads. The servers expose address data and history, transaction and block data, smart-contract data, blockchain fees, and HD wallet data, and they can also prepare transactions, simulate EVM transactions, broadcast signed transactions, and create and manage blockchain event subscriptions. The live page groups these as addresses, transactions, blocks, market data, smart contracts, fees, and wallets.

Does the MCP market data include price charts or order books?

The market data tools provide asset lists, exchange rates, and asset metadata. They do not provide OHLCV candlesticks or order-book depth. Use the exchange-rate and asset tools for pricing reference data within your AI agent.

How do I get started building an AI blockchain agent with Crypto APIs?

Get a Crypto APIs API key, then install and configure one of the MCP servers with that key. Point your MCP host (Claude, Cursor, Continue, or n8n's MCP Client node) at the server and start querying on-chain data through natural language. The live page markets a drop-in install with no glue code so you can ship your first agent quickly.

Ship your first AI blockchain agent today

Read the MCP Servers and n8n MCP Client documentation and get an AI agent talking to the blockchain in minutes.

View Docs Book a call