402-mcp enables x402 payments in MCP
Not a pilot. AI agents can now call paid tools directly—payments confirm in 100ms for under $0.01.
Why it matters
Vercel's x402-mcp library removes friction from monetizing AI agent tool access, enabling real-time micropayments in MCP workflows without account friction. This shifts the economics of tool discovery and usage in agentic systems.
The key facts
12 to knowx402-mcp integrates payment layer into Model Context Protocol servers
Payment confirmation latency: 100-200ms
Transaction fees under $0.01
Supports payment minimums under $0.001
Account-less, anonymous payment model
Integrates with Vercel AI SDK
Enables agents to discover and call paid tools directly
x402-mcp library integrates with AI SDK for MCP server payments
Payment confirmation time: ~100-200ms
Account-less, anonymous payment flows
Integrates with Vercel AI SDK MCP Clients
Published by Vercel (September 12, 2025)
Go to the source
Vercel Blogvercel.com
Publisher excerpt: Introducing , a library that integrates with the AI SDK to bring paywalls to Model Context Protocol (MCP) servers to let agents discover and call pay for MCP tools easily and securely.x402-mcpx402 With x402-mcp, you can define MCP servers with that require payment to run, enabling account-less,…