AI agents pay for APIs autonomously over x402 — but a large share of listed endpoints are dead, and even a live one is not always something you can buy. Payments are irreversible. PulseFeed verifies an endpoint before your agent pays it.
Before paying an unknown x402 endpoint: liveness, uptime/reputation, a scam & anomaly scan (payTo hijack, price bait-and-switch, honeypot, non-USDC asset), on-chain receiver profile, and a pay/avoid verdict.
GET /trust?endpoint=… · free /verifyDrop-in wrapper for your agent's payment fetch. Every payment is verified first; dead/scam endpoints are blocked automatically. Zero dependencies.
npm i pulsefeed-x402-guardGive Claude Desktop / Cursor / Cline tools to find live x402 services and verify endpoints before paying.
npx -y pulsefeed-x402-mcpDrop-in tools for the Vercel AI SDK and LangChain: verify an x402 endpoint before your agent pays, and discover working services.
npm i pulsefeed-x402-ai-toolsReal-time Base signals for agents: token pulse, whale alerts, smart-money accumulation/distribution, momentum.
/pulse · /whales · /flow · /momentum// drop-in guard around your x402 payment fetch
import { guardFetch } from "pulsefeed-x402-guard";
const safe = guardFetch(payingFetch);
await safe("https://some-x402-service/api"); // verified, then paid — or blocked
Or one call: GET https://pulsefeed.dev/verify?endpoint=<url> (free) · GET https://pulsefeed.dev/trust?endpoint=<url> (live, paid).
| Endpoint | What | Price |
|---|---|---|
/verify | Cached trust verdict | free |
/trust | Live verification + scam scan + on-chain | $0.004 |
/trust/history | Endpoint track record over time | $0.008 |
/trust/dataset | Bulk trust dataset (all services, one call) | $0.10 |
/pulse · /momentum | Token activity / momentum | $0.01 |
/whales · /flow | Whale alerts / smart-money flow | $0.02 |
PulseFeed — independent trust & safety layer for the x402 agent economy.
Observatory · Changes · State of x402 · Trust Score · Embed widget · Methodology · OpenAPI · llms.txt · manifest · guard SDK · MCP · AI SDK tools