x402 Tools — agent-tools.cloud

Pay-per-call research tools for AI agents, paid via x402 USDC. Remote MCP, one free tool.

Paid verification

No sponsored paid call yet.

Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.

Quality grade

How grading works

B 59.9 / 100

Availability 20.0 / 20

Endpoint responded (HTTP 403)

Payability 15.0 / 15

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 7.2 / 35

2 distinct payers, 15 USDC transfers in the last 30 days

Performance 5.5 / 10

Last probe answered in 1012 ms (full marks at 200 ms or less)

Readiness 12.2 / 15

Agent readiness 81/100

Owner verified 0.0 / 5

Nobody has claimed this listing yet

Endpoint last checked 18 h ago. On-chain activity last read 3 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

B · 81/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B, 59.9/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements	10/10	Payment requirements carry a payee, a mainnet network and a price.
Live 402 challenge	20/25	Endpoint reachable; its 402 challenge was seen earlier (1012 ms).
x402 version	n/a	x402 version not observed yet.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	15/15	32/32 probes succeeded over 30 days (100%).
Resource declaration	10/10	Declares 13 paid resource(s).
Verified identity	5/10	Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags	1/5	not seen in a source for over 30 days; declares x402.
Security declaration	n/a	Payment is the access control for an x402 resource.

Applicable criteria total 75 points, scaled to 100.

Responsiveness: Responsive (1012 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 60% of peers; This listing 81 · peer median 78
Latency: Faster than 5% of peers; This listing 1,012 ms · peer median 205 ms

Where it loses the most points, and how to win them back

Live 402 challenge −5 — Answer the paid path with a valid 402 challenge.
Now: Endpoint reachable; its 402 challenge was seen earlier (1012 ms).
Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags −4 — Keep the listing current in the registry or source it comes from.
Now: not seen in a source for over 30 days; declares x402.

How many agent tools actually work · All statistics

Adoption signals

Public signals from outside this directory, shown for context. They do not change search order or grades.

Site rank (Tranco): #271,789 of the top 1M; workbuddy.host · list of 2026-11-10

Paid endpoints

13 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/web_fetch

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/domain_intel

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/github_repo

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/token_intel

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/repo_diligence

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/web_brief

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/stock_quote

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 Ten

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/free_url_check

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/usgs_earthquakes

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).

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/open_meteo_weather

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).

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/exchange_rates

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/sec_edgar_search

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.

GET,POST https://fitze-x402-seller.app.workbuddy.host/tools/fda_recalls

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.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://fitze-x402-seller.app.workbuddy.host/tools/web_fetch  # expect HTTP 402 Payment Required (about 0.005 USDC/call)

MCP endpoint

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

/.well-known/x402.json

https://fitze-x402-seller.app.workbuddy.host/.well-known/x402

Listed in

Directories this entry was found in.

mcp since 2026-09-22 x402scan since 2026-09-24