MCP.Market

x402 Tools MCP server

online · 96% uptime
by foxxx009·io.github.foxxx009/x402-tools-mcp·v1.1.0
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Pay-per-call research tools for AI agents, paid via x402 USDC. Remote MCP, one free tool.

B80/100grade B
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Safety scan
B80/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

x402 Tools tools (13)

write = sends, deletes, buys or posts
  • domain_intelFree

    $0.005 per call — Domain due-diligence bundle: RDAP registrar + creation/expiry dates + status, DNS records (A/MX/NS/TXT), and Certificate Transparency history via crt.sh. Use to vet a domain before trusting or linking to it.

  • exchange_ratesFree

    $0.002 per call — Live fiat exchange rates (open.er-api.com, no key, ~200 currencies). Params: base = ISO code (default USD); to = comma list or single code (default EUR,GBP,JPY,CNY). Returns rates and the last-update timestamp.

  • fda_recallsFree

    $0.02 per call — FDA recall enforcement reports from open.fda.gov (no key, rate-limited). Params: type = food|drug|device (default food); reason = free-text filter; limit = max records (default 10). Returns recall reason, status, date and product description for each match.

  • free_url_checkFree

    FREE — FREE: check whether a public URL is reachable and what it is. Returns HTTP status, final URL after redirects, content type and page title. Use web_fetch (paid) for full text and links.

  • github_repoFree

    $0.005 per call — GitHub repo snapshot: stars, forks, open-issue count, watchers, primary language, SPDX license, created/pushed dates and latest release tag. Use to triage a repo before contributing or depending on it.

  • open_meteo_weatherFree

    $0.002 per call — Current weather from Open-Meteo (no API key, no signup). Given lat/lon returns temperature (C), apparent temperature, humidity, wind speed, precipitation and a WMO weather code. Params: lat, lon (required).

  • repo_diligenceFree

    $0.03 per call — Deep GitHub repo due-diligence: base snapshot + last 5 commits (author/date/message), contributor count, archived flag, security-policy presence, latest release cadence and open/closed issue ratio. Use to decide whether to depend on or contribute to a repo before trusting it.

  • sec_edgar_searchFree

    $0.02 per call — SEC EDGAR full-text search (efts.sec.gov, no key). Find filings by term. Params: q = search term (required); forms = comma list e.g. 10-K,8-K; limit = max hits (default 10). Returns filing date, company, CIK and accession number for each hit.

  • stock_quoteFree

    $0.01 per call — Real-time stock quotes: price, change, change percent, open, high, low, volume, turnover, currency and exchange timestamp. Covers A-shares (sh600000, sz000001), Hong Kong (hk00700) and US (usAAPL or plain AAPL). Accepts several symbols at once separated by commas. No API key needed, sourced from Tencent qt.gtimg.cn with a Nasdaq fallback for US tickers.

  • token_intelFree

    $0.005 per call — Base ERC-20 due-diligence: on-chain name, symbol, decimals and total supply via eth_call. Use to sanity-check a Base token address before interacting with it.

  • usgs_earthquakesFree

    $0.002 per call — Recent earthquakes from the USGS GeoJSON feed (no API key). Returns magnitude, place, time, depth and coordinates for each event. Params: period = hour|day|week (default day); minmag = minimum magnitude (default 0); limit = max events (default 20).

  • web_briefFree

    $0.02 per call — Multi-source research brief from 1–3 URLs. For each source extract title, meta description, key sentences (numbered/quoted/date-or-figure-bearing) and outbound links. Returns a structured, citable brief other agents can consume without their own web access.

  • web_fetchFree

    $0.005 per call — Fetch a public URL and return status, final URL, title, cleaned text (scripts/styles stripped, truncated) and the top 20 absolute links. Useful when an agent itself cannot reach the open web.

Public scan report

scanner v0.1.10 · 2026-11-01 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 4450ms17/20
  • Tool poisoning13 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 40 days ago12/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 80/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How x402 Tools compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
80/100
higher than 60% of 48,255 servers
Tools
13
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
96%
of our recent checks; the typical remote server answers 100%
Response time
1,393 ms
faster than 6% of 30,031 servers

What its tools let an agent do: 12 read · 1 create

Install x402 Tools in Claude Code, Cursor or VS Code

claude mcp add --transport http x402-tools-mcp https://fitze-x402-seller.app.workbuddy.host/mcp
Add to Cursor

What the publisher says

From the x402 Tools repository's README, as published. We do not edit it. Read it on GitHub

x402-tools-mcp

An MCP server that gives any AI agent six research and data tools, paid per call in USDC on Base through x402.

No API keys. No subscription. No monthly minimum. You pay a cent or two when your agent actually calls a tool.

Why this exists

Agent sandboxes are frequently firewalled from the open web, and the usual workaround — an API-key-gated scraping service — means a subscription, an account, and a monthly floor you pay whether or not you use it. x402 removes all three: the server answers 402 Payment Required, the client signs a USDC transfer authorisation, and the call proceeds. That is the whole handshake.

Setup

1. Fund a wallet. Any Base wallet with a few dollars of USDC. It needs no ETH — gas is paid by the settlement facilitator.

2. Export the key.

export X402_PRIVATE_KEY=0x<private key of that wallet>

3. Register the server with your MCP client:

{
  "mcpServers": {
    "x402-tools": {
      "command": "npx",
      "args": ["-y", "x402-tools-mcp"],
      "env": {
        "X402_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Or run it locally:

git clone https://github.com/foxxx009/x402-tools-mcp
cd x402-tools-mcp && npm install
X402_PRIVATE_KEY=0x... node index.js

Environment variables

X402BASEURL lets you point the same server at your own x402 seller.

What leaves your machine

Only two things: the tool arguments, and an EIP-3009 signature authorising a USDC transfer for the quoted amount. The private key never leaves the process. Signing is local; settlement happens on Base.

Notes

states the exact amount before you pay anything.

  • Payments are USDC on Base mainnet. A testnet wallet will not work.
  • Each call is charged on retry with X-PAYMENT; the 402 response always

multi-request work. Call them deliberately.

  • repodiligence and webbrief are priced higher because they do real

Remote MCP (zero install)

Prefer not to run anything locally? The same service is exposed as a remote Streamable HTTP MCP endpoint:

https://fitze-x402-seller.app.workbuddy.host/mcp

Add it to any MCP client (Claude Desktop, Cursor, etc.) as a remote server URL. freeurlcheck runs without payment; paid tools answer HTTP 402 with x402 payment requirements and settle in USDC on Base when an x402-capable client retries. Listed in the official MCP Registry as io.github.foxxx009/x402-tools-mcp.

Licence

MIT

Nothing above is checked by us. What we check is on the safety report.

x402 Tools: common questions

Is x402 Tools MCP server safe?
Mostly: it is graded B (80/100). Read the x402 Tools safety report
How do I install x402 Tools?
It runs remotely at fitze-x402-seller.app.workbuddy.host. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does x402 Tools need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is x402 Tools maintained?
The last commit was 43 days ago (2026-09-22). The latest release is v1.1.0.
Is x402 Tools up?
96% of our last 28 checks got an answer. We check remote servers about four times a day.
How does x402 Tools compare with other MCP servers?
safety score 80/100 (higher than 60% of 48,255 servers); tools 13 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.