MCP server auto-discovers 100+ x402-paid APIs with USDC micropayment handling on Base and Solana mainnets.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
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Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Choose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Overview
Use cases
Integrate paid x402 APIs into AI agent workflows
Automate USDC micropayments for API calls on Base and Solana
Dynamically discover and update available API tools from CDP Bazaar
Control spending with configurable maximum payment per call
Key features
Auto-discovers x402 API endpoints and metadata from CDP Bazaar
Refreshes tool list every 5 minutes without restart
Handles HTTP 402 payment flow with USDC on Base and Solana
Supports multi-chain usage with Base and Solana mainnets
Configurable maximum price per API call to limit costs
Capabilities & Tool Schemas
Inspect callable tools, capabilities, and parameters exposed to AI agents by X402 MCP.
Extracted Tool Capabilities
Auto-discovers x402 API endpoints and metadata from CDP Bazaar
Refreshes tool list every 5 minutes without restart
Handles HTTP 402 payment flow with USDC on Base and Solana
Supports multi-chain usage with Base and Solana mainnets
Configurable maximum price per API call to limit costs
Documentation Overview
x402-mcp
MCP server bringing hundreds of x402-paid APIs to AI agents (Claude, Cursor, MCP-aware clients). Auto-discovers tools from CDP Bazaar; handles USDC micropayments on Base + Solana.
Features
- Auto-discovers x402 endpoints from CDP Bazaar (no hard-coded list)
- Reads metadata directly from Bazaar (description, schema, pricing)
- Refreshes every 5 min — new endpoints appear without restart
- Handles HTTP 402 + USDC payment automatically
- Multi-chain: Base + Solana mainnet live (USDC on both); Polygon/BNB/EVM expandable
Install (Claude Desktop)
Add to claude_desktop_config.json:
Set X402_PRIVATE_KEY to a Base EOA private key (hex, 0x-prefixed) with USDC on Base mainnet (Solana payment via SPL USDC also supported). Restart Claude Desktop. The server auto-discovers ~117 tools on first run.
Cost Safety
- Each tool call costs $0.0001-$0.10 USDC depending on endpoint
- Hard cap:
MAX_PRICE_USDenv var (default $0.10/call); calls above are blocked - Use a fresh burner wallet, not your main wallet
How it works
Agent calls tool -> HTTP 402 -> x402-fetch signs EIP-3009 -> CDP Facilitator settles on Base or Solana -> response returned. Buyer pays no gas.
Development
Links
- x402 protocol: https://x402.org
- CDP Bazaar: https://docs.cdp.coinbase.com/x402/bazaar
- MCP: https://modelcontextprotocol.io
- npm: https://www.npmjs.com/package/x402node-mcp
- Glama: https://glama.ai/mcp/servers/x402node/x402-mcp
License
MIT
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks — not a rating.
GitHub stars
1
Stargazers on the source repository.
npm downloads
240
Package downloads in the last 30 days.
Last commit
1mo ago
Most recent push to the default branch.
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Frequently Asked Questions about X402 MCP
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CategoryFinance & Fintech
9/10 checks healthy over the last 31d
48Quality signal: Fair · 48/100How this signal is calculated ▾
Server availabilityNot measured
Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.
Verified ownership10/20
Documentation & tools21/30
Adoption & activity5/15
Community engagement0/10
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Scanned 13d ago via OSV.dev · x402node-mcp (npm)
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