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mcp/harbor
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x402 Pay — USDC API Payment Helper MCP

v1.0.3 changelog · 8

com.scriptmasterlabs/x402-pay

Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

transport:streamable-http tools:5
View source Website

Target client

run in your project directory 

claude mcp add --transport http x402-pay https://squeezeos-api.onrender.com/mcp/x402-pay

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

payment_info

payment info

list_paid_apis Read-only

list paid apis

check_payment Read-only

check payment

x402_inspect_challenge

x402 inspect challenge

check_status Read-only

check status

All 5 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.