Agentdata MCP Server

AgentData MCP Server

Model Context Protocol server exposing 16 crypto market data tools for Claude Desktop, Cursor, and any MCP-compatible AI client. Payments via x402 / USDC on Base Mainnet.

What this is

A thin MCP wrapper around the AgentData API — a production x402 service on Base Mainnet. Any MCP-compatible LLM can use these 31 tools with no setup beyond adding one line to your client config — four of them free, so you can try before paying.

Two modes

Proxy mode (default) — No wallet needed. When a tool is called, the server returns the x402 payment instructions so the MCP client can handle payment however it prefers.

Auto-pay mode — Set AGENTDATA_BUYER_PRIVATE_KEY to a wallet funded with USDC on Base. The server signs ERC-3009 TransferWithAuthorization automatically using viem. Payments are gasless for the buyer — the facilitator covers settlement gas.

Quick Start

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

Option 1: Remote MCP (easiest, no install)

{
  "mcpServers": {
    "agentdata": {
      "url": "https://agentdata-api.com/mcp"
    }
  }
}

Option 2: Local stdio

{
  "mcpServers": {
    "agentdata": {
      "command": "npx",
      "args": ["-y", "agentdata-mcp"],
      "env": {
        "AGENTDATA_BUYER_PRIVATE_KEY": "0xYourWalletKeyHere"
      }
    }
  }
}

Restart Claude Desktop. The tools become available immediately.

Cursor

Settings → MCP → Add Server with the same config as above.

Install from source

git clone https://github.com/speteai/agentdata-mcp.git
cd agentdata-mcp
npm install
node index.js

Available Tools

Generated from the running service, not maintained by hand — the old table listed 16 tools at prices that had drifted (get_crypto_prices was shown at $0.001 and costs $0.002). Four tools are free, including the calibration record: read that before trusting any signal.

Two further tools exist in the catalogue but are withheld until their data base is deep enough to be worth charging for; they appear here automatically once they are served.

Environment Variables

Cost Economics

For an agent querying every paid tool once: ~$0.139 USDC. The four free tools cost nothing, and get_market_pulse bundles eight signals for $0.018 instead of $0.022 bought separately. For common queries (prices + sentiment): ~$0.002 USDC per full context update.

Fund your buyer wallet with $5 USDC → good for ~2500 sentiment checks or ~150 full backtesting queries.

No ETH needed on the buyer wallet. The AgentData facilitator pays settlement gas.

Related

• agentdata-api — the underlying service
• elizaos-plugin-agentdata — ElizaOS plugin version
• Live service: https://agentdata-api.com
• Admin dashboard: https://agentdata-api.com/admin

Keywords

Model Context Protocol, MCP server, Claude Desktop MCP, Cursor MCP, crypto market data MCP, x402 MCP, AI agent tools, agentic payments, USDC micropayments, Base Mainnet API, DeFi data for AI, crypto tools for LLM, autonomous agent data, agent economy, DeFAI

License

MIT — see LICENSE.