pulsefeed-x402-mcp
Before an AI agent pays an x402 endpoint, checks whether it's safe to pay: liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), and on-chain receiver verification. ~70% of x402 endpoints are dead or scams.
README
PulseFeed — open-source x402 client tools
Client-side, MIT-licensed tools for PulseFeed — the independent trust & safety layer for the x402 agent-payment economy.
Before an AI agent pays an x402 endpoint, it should know whether that endpoint is safe to pay — ~70% of x402 endpoints are dead, invalid, or scams, and only about half of what catalogs call "healthy" actually work. PulseFeed independently probes every x402 service, scans for scams (payTo hijack, bait-and-switch, honeypot), verifies the receiver on-chain, and publishes an open Trust Score.
This repo holds the open-source client packages. They talk to PulseFeed's public API (free /verify, live /status, paid /trust). The crawler, scoring engine, and dataset are the service itself at pulsefeed.dev.
Packages
| Package | What it does | Install |
|---|---|---|
pulsefeed-x402-ai-tools |
Drop-in tools for the Vercel AI SDK and LangChain: verify an x402 endpoint before your agent pays + discover working services | npm i pulsefeed-x402-ai-tools |
pulsefeed-x402-guard |
Wrap your paying fetch — every payment is verified first; dead/scam endpoints are blocked automatically (zero deps) |
npm i pulsefeed-x402-guard |
pulsefeed-x402-mcp |
MCP server: gives Claude Desktop / Cursor / Cline tools to find live x402 services and verify endpoints before paying | npx -y pulsefeed-x402-mcp |
Quick example
import { verifyX402Endpoint } from "pulsefeed-x402-ai-tools";
const v = await verifyX402Endpoint("https://api.some-x402-service.com/data");
if (v.verdict === "avoid") throw new Error("don't pay this endpoint");
MCP config
{ "mcpServers": { "pulsefeed": { "command": "npx", "args": ["-y", "pulsefeed-x402-mcp"] } } }
Links
- 🌐 Live observatory: pulsefeed.dev/status — the live state of x402
- 📊 State of x402 report · Trust Score standard · Change feed
- 📖 Methodology · OpenAPI · llms.txt
MIT © PulseFeed
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