x402 List

x402 Protocol Service Directory

PulseFeed — x402 Trust & Safety Oracle

Verification

Verify any x402 endpoint before your agent pays: liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), on-chain receiver verification and an open Trust Score. Continuous independent audit of the whole x402 ecosystem (~5k endpoints tracked). Paid: /trust $0.02, /trust/dataset $0.10, /data/full $1 (cross-domain x402+MCP dataset). Free: /verify, /status.json, /incidents (security disclosures with on-chain proof).

Pay from $0.02 to $1.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-07-30 · no on-chain settlement recorded yet

BASE URL https://pulsefeed.dev WEBSITE https://pulsefeed.dev ENDPOINTS 3 NETWORK Base ASSET USDC MEMBER SINCE 2026-07-30 MONITORED SINCE 2026-07-30

ASSESSMENT

updated 2h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
266ms
avg response
266ms
total checks
1
compliance A (13/14): declares the current x402 version (2)

13 of 14 x402 conformance checks pass; failing: declares the current x402 version (2). Full checklist below.

jump to compliance checklist

price $0.02 to $1.00 (p73 in Verification)
price (min)
$0.02
price (max)
$1.00
category percentile (min)
p73 in Verification
category percentile (max)
p90 in Verification
endpoints / prices
3 / 3
model
tiered
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
24d
registrar
Key-Systems LLC
hosting
custom
domain created
2026-07-06

Identity facts, not a risk score.

traction $0 30d · 0 buyers
volume 30d
$0
buyers 30d
0
settlements 30d
0
first settlement
---
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
$0
max settlement 30d
$0
settled via
-

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

PulseFeed provides a trust and safety oracle for x402 services, offering verification, scam detection, and on-chain receiver checks to help users avoid unsafe endpoints.

category
trust-oracle
in
query params
auth
none
trustsafetyverificationscam-detectionon-chainreputation

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET
GET /data/full PulseFeed Data API — the wholesale trust backbone for agentic commerce. One call returns the ENTIRE cross-domain dataset: every x402 service's moat profile (trustScore, scam flags, on-chain receiver, compounding payTo/price history), every audited MCP server (safe/avoid, install-script, abandoned), ecosystem aggregates + live security incidents with on-chain proof. For builders of trust/monitoring tools, agent frameworks & researchers. Free preview + schema: /data.json. Params: ?limit=N, ?all=1. $1.00 Base USDC
GET /trust x402 trust & safety oracle: before paying an unknown x402 endpoint, check if it's safe. Live validity, reputation/uptime, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot, wrong asset) + on-chain receiver check on Base (real address receiving USDC, or fresh/empty) → pay/avoid verdict. ?endpoint=url. No param = catalog of working services + ecosystem risk map $0.02 Base USDC
GET /trust/dataset Bulk x402 trust dataset in one call: every service's full trust profile — trustScore/verdict, scam flags, receiver stability, on-chain profile + compounding payTo/price change history. Built for trust/uptime/monitoring tools (?all=1 to include dead, ?limit=N). Free format preview in /status.json (dataset) $0.10 Base USDC
3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /data/full returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://pulsefeed.dev/data/full'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
  {
    "docs": {
      "llms": "https://pulsefeed.dev/llms.txt",
      "site": "https://pulsefeed.dev/data",
      "openapi": "https://pulsefeed.dev/openapi.json"
    },
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://pulsefeed.dev/trust/dataset",
        "description": "Bulk trust data for every x402 service in one call. For builders of trust, uptime and monitoring tools: each service's full profile — 0-100 trust score and pay/avoid verdict, scam flags, receiver stability, on-chain receiver profile, plus the compounding payTo and price change history. Skip scraping hundreds of endpoints. ?all=1 includes dead/invalid services, ?limit=N. Free format preview and samples: /status.json and /data/sample.",
        "outputSchema": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "all": "set to 1 to include dead/invalid services",
              "limit": "max services to return (default 2000)"
            },
            "discoverable": true
          }
        },
        "maxAmountRequired": "100000",
        "maxTimeoutSeconds": 60
      }
    ],
    "freeSample": "https://pulsefeed.dev/data/sample",
    "quickstart": {
      "curl": "curl https://pulsefeed.dev/trust/dataset  # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
      "node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account); const r = await payingFetch(\"https://pulsefeed.dev/trust/dataset\"); // account = viem account with USDC on Base",
      "guard": "npm i pulsefeed-x402-guard  # optional: verify endpoints before paying",
      "install": "npm i x402-fetch viem"
    },
    "freePreview": "https://pulsefeed.dev/status.json",
    "x402Version": 1
  },
  {
    "docs": {
      "llms": "https://pulsefeed.dev/llms.txt",
      "site": "https://pulsefeed.dev/data",
      "openapi": "https://pulsefeed.dev/openapi.json"
    },
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://pulsefeed.dev/data/full",
        "description": "The whole agentic-commerce trust dataset in one call: every audited x402 endpoint (trust score, scam flags, on-chain receiver, payTo/price history) AND every audited MCP server (safe/avoid, install-script risk, abandonment) plus incidents with on-chain proof. Cross-domain and longitudinal. NOTE: $1.00 exceeds the default 0.1 USDC cap in x402-fetch — pass maxValue. Free sample: /data/sample",
        "outputSchema": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "all": "set to 1 to include dead/invalid x402 services",
              "limit": "max x402 services (default 3000)"
            },
            "discoverable": true
          }
        },
        "maxAmountRequired": "1000000",
        "maxTimeoutSeconds": 60
      }
    ],
    "freeSample": "https://pulsefeed.dev/data/sample",
    "quickstart": {
      "curl": "curl https://pulsefeed.dev/data/full  # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
      "node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account, BigInt(1000000)); const r = await payingFetch(\"https://pulsefeed.dev/data/full\"); // account = viem account with USDC on Base",
      "guard": "npm i pulsefeed-x402-guard  # optional: verify endpoints before paying",
      "install": "npm i x402-fetch viem"
    },
    "freePreview": "https://pulsefeed.dev/data.json",
    "x402Version": 1,
    "clientSpendCapWarning": "This resource costs 1.00 USDC, which is above x402-fetch's DEFAULT client-side cap of 0.10 USDC. A client using default settings will refuse the payment locally before sending it. Pass maxValue explicitly: wrapFetchWithPayment(fetch, account, BigInt(1000000)). Cheaper alternatives under the default cap: GET /trust/dataset ($0.10, x402-only bulk feed) or GET /trust?endpoint= ($0.02, single check). Free sample: https://pulsefeed.dev/data/sample"
  },
  {
    "docs": {
      "llms": "https://pulsefeed.dev/llms.txt",
      "site": "https://pulsefeed.dev/data",
      "openapi": "https://pulsefeed.dev/openapi.json"
    },
    "error": "X-PAYMENT header is required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
        "scheme": "exact",
        "network": "base",
        "mimeType": "application/json",
        "resource": "https://pulsefeed.dev/trust",
        "description": "Is this x402 endpoint safe to pay? Vet an unknown endpoint or seller BEFORE paying: pay/avoid verdict, 0-100 trust score, live 402 probe, scam flags (payTo hijack, price bait-and-switch, honeypot, wrong asset) and an on-chain check of the receiver wallet on Base. From a continuous audit of 5,600+ endpoints — ~74% are dead or invalid. ?endpoint=url; omit it for a trust-ranked catalog of working services.",
        "outputSchema": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "endpoint": "x402 endpoint URL to verify (omit for the working-services catalog + risk map)"
            },
            "discoverable": true
          }
        },
        "maxAmountRequired": "20000",
        "maxTimeoutSeconds": 60
      }
    ],
    "quickstart": {
      "curl": "curl https://pulsefeed.dev/trust  # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
      "node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account); const r = await payingFetch(\"https://pulsefeed.dev/trust\"); // account = viem account with USDC on Base",
      "guard": "npm i pulsefeed-x402-guard  # optional: verify endpoints before paying",
      "install": "npm i x402-fetch viem"
    },
    "freePreview": "https://pulsefeed.dev/verify?endpoint=<url>",
    "x402Version": 1
  }
]

OVER TIME

All charts share the 90d window selected here. Every series is also served as JSON at /api/v1/services/pulsefeed-x402-trust-safety-oracle/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
07-30 · uptime 100.0% · 171ms avg07-3007-30
90d UPTIME 100%
RESPONSE TIME
07-30 · 171ms avg07-30 · 171ms avg07-3007-30
AVG RESP 180ms
PRICE (captured 402, USD)
building price history ($0.10)

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)
VOLUME (on-chain settlement, USD)
building volume history (1 day so far)
DISTINCT BUYERS
building buyer history (1 day so far)

COMPLIANCE

13/14 checks pass · grade A · failing: declares the current x402 version (2)
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (9) · click to expand
TIME STATUS RESP
● OK 252ms
● SLOW 272ms
● OK 175ms
● OK 32ms
● SLOW 346ms
● OK 180ms
● OK 36ms
● OK 58ms
● OK 266ms

EMBED THIS BADGE

Show that PulseFeed — x402 Trust & Safety Oracle is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

PulseFeed — x402 Trust & Safety Oracle listed on x402-list
status
PulseFeed — x402 Trust & Safety Oracle uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/pulsefeed-x402-trust-safety-oracle?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/pulsefeed-x402-trust-safety-oracle.svg" alt="PulseFeed — x402 Trust & Safety Oracle listed on x402-list" height="28">
</a>
// Markdown
[![PulseFeed — x402 Trust & Safety Oracle on x402-list](https://x402-list.com/badge/pulsefeed-x402-trust-safety-oracle.svg)](https://x402-list.com/services/pulsefeed-x402-trust-safety-oracle?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/pulsefeed-x402-trust-safety-oracle?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/pulsefeed-x402-trust-safety-oracle.svg?data=uptime" alt="PulseFeed — x402 Trust & Safety Oracle uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]