mcpbeat

Pulsefeed X402 MCP Server

io.github.Nikolife2016/pulsefeed-x402
answering

Pulsefeed X402 is answering right now. Last checked 13 min ago. 912 installs a week from npm. It exposes 10 tools. Last commit 4 Aug 2026.

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

Installs per day peak 609 · avg 36 · +4045% w/w
a month agotoday
Uptime history 41 hours of history
41 hours agonow
100.0%
Uptime 24h
91 of 91 checks
10
Tools
read from the server
133 ms
Response time
average over 24h
912
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add pulsefeed-x402 --transport http https://pulsefeed.dev/mcp-server
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "pulsefeed-x402": {
      "url": "https://pulsefeed.dev/mcp-server"
    }
  }
}
~/.codex/config.toml
[mcp_servers.pulsefeed-x402]
url = "https://pulsefeed.dev/mcp-server"
.cursor/mcp.json
{
  "mcpServers": {
    "pulsefeed-x402": {
      "url": "https://pulsefeed.dev/mcp-server"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "pulsefeed-x402": {
      "url": "https://pulsefeed.dev/mcp-server"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

x402
check_x402_endpoint
Before paying an unknown x402 endpoint, check whether it is safe: liveness, trust score (0-100), anomaly flags (receiver address changed between observations, catalog price vs. challenge price, invalid receiver, testnet listed as production, scheme outside the x402 spec), receiver stability and observation-count-qualified uptime — with a pay/avoid verdict. Reads the challenge from both the response body and the v2 PAYMENT-REQUIRED header. Free.
x402_changes
What changed in the x402 ecosystem recently: services that stopped returning a valid challenge, receiver (payTo) changes, price changes, recoveries, newly-seen services. Derived from compounding time-series that cannot be reconstructed after the fact. Free.
x402_data_sample
FREE sample of the PulseFeed Data API: top-10 live x402 services as FULL records (compounding payTo/price history, anomaly flags, on-chain receiver profile), top-10 MCP servers with full audit profile, and 3 live incidents.
x402_ecosystem_stats
Live health of the whole x402 agent-payment ecosystem: tracked/alive/dead counts, catalog-accuracy audit (what share of listings called 'healthy' actually work), risk-level distribution, receiver stability and on-chain receiver profiles. Free.
x402_incidents
Anomalies observed in live x402 endpoints by continuous independent measurement: receiver-address changes between observations, catalog price vs. challenge price mismatches, invalid receivers, testnet endpoints listed as production, payment schemes outside the x402 spec — EACH WITH AN ON-CHAIN REFERENCE on Base. Measurements, not accusations of intent. Check before paying anything. Free.
x402_leaderboard
Top x402 services ranked by the open PulseFeed Trust Score (0-100), with price and network — the most reliable live agent-payment endpoints right now. Free.
x402_working_services
List x402 agent-payment services that are currently ALIVE and return a valid x402 challenge, ranked by PulseFeed Trust Score, plus ecosystem risk map. Use this to pick a service with a track record instead of paying an endpoint you have not checked. Free.
mcp
mcp_check_server
Before installing an MCP server or npm package, audit it: does it run an INSTALL SCRIPT (arbitrary code execution at `npm i`), is it abandoned, does it ship a repository and license, weekly downloads, provenance — with a safe/caution/avoid verdict. ~11% of audited MCP servers run install scripts. Free.
mcp_security_report
State of MCP Security: how many audited MCP servers run an arbitrary install script, are abandoned, ship no repository or license — with day-over-day deltas and a sample of currently-flagged servers. From a daily audit of ~950 servers. Free.
pulsefeed
pulsefeed_products
List PulseFeed's paid products and how to pay via x402 (USDC on Base): deep trust check, endpoint track record, bulk trust dataset, and the cross-domain Data API. Includes the client-side spend-cap gotcha for x402-fetch.

Endpoints

URLTransportStateLatencyChecked
https://pulsefeed.dev/mcp-server streamable-http answering 100 ms 13 min ago

Pulsefeed X402 — questions

Answers built from our own checks of this server.

What can Pulsefeed X402 do?
It exposes 10 tools, read directly from the server on our last check. Among them: check_x402_endpoint, mcp_check_server, mcp_security_report, pulsefeed_products, x402_changes, x402_data_sample and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Pulsefeed X402 mostly used for?
Its tools cluster around x402 and mcp. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Pulsefeed X402 working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 133 ms. The bar chart above shows every period we have measured.
How do I connect Pulsefeed X402?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Pulsefeed X402 need an API key?
No. Pulsefeed X402 completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Pulsefeed X402?
It answers our handshake in 133 ms on average, which is faster than 77% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Pulsefeed X402?
The npm package pulsefeed-x402-mcp was installed 912 times in the last week. Week over week that is +4045%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Pulsefeed X402 open source?
Yes — it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.