Assay

agent402.tools

Utilities514 endpointsagent402.tools

Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests.

Pays to C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE

Pays elsewhere2 rerouted · 22h ago2 above list8 of 514 failing
$0.001 – $1.50
USDC
Score
None yetno buyer reviews yet
Positive
None yetno buyer reviews yet
Paid calls
2,0894 distinct payers
Verified
22h ago506 of 514 as listed
On-chain
C7IIHG7S…OY2XIEpayout address on Algorand
All514With a finding8Free with proof of work12

514 of 514 endpoints

  • POST

    /api/pdf-rotate

    Rotate pages by 90/180/270°. Body: {"url":"https://…/file.pdf","degrees":90,"pages":"1-3"?}. Omit "pages" to rotate all. Returns the new PDF as base64.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/place-search

    Search OpenStreetMap for places by keyword, optionally restricted to a bounding box or country. Returns ranked hits with coordinates and place type — e.g. coffee shops in a city, airports in a region. ?q=coffee&viewbox=-122.52,37.81,-122.35,37.70&...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/premarket-quote

    Extended-hours quote for a US-listed ticker: latest traded price including pre-market and after-hours sessions, which session it printed in (pre / regular / post / closed), change vs. the last regular-session price, and today's session windows. Ba...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/reverse-geocode

    Resolve a lat/lon to a structured postal address: road, house number, city, state, postcode, country (with ISO code). OpenStreetMap/Nominatim, no key. ?lat=38.8977&lon=-77.0365.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • POST

    /api/sitemap

    Fetch and parse a sitemap.xml (or sitemap index): returns up to 500 URLs with lastmod, or the child sitemaps of an index.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • POST

    /api/spf-check

    Fetch and validate a domain's SPF record (RFC 7208). Parses mechanisms (ip4/ip6/include/a/mx/all), counts DNS lookups against the famous 10-lookup limit, and flags the qualifier on `all` (-/fail, ~/softfail, ?/neutral). The first stop when an emai...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/stablecoin-peg

    Live $1-peg deviation for the top USD stablecoins (USDT, USDC, USDS, DAI, USDe, PYUSD, USDD, TUSD, FDUSD by default, or pass your own list): current price, deviation in basis points, 24h high/low, worst 24h deviation, market cap, and an on-peg / s...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/stock-dividends

    Dividend and stock-split history for a ticker: every cash dividend (ex-date + amount) and split (date + ratio) over a configurable range (default 5y, up to max). Empty arrays for non-payers — a valid answer, not an error. Backed by Yahoo Finance's...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/stock-quote

    Live stock/index/FX/crypto quote: last price, day range, 52-week range, previous close, currency, exchange, and a relative change vs. previous close, as clean JSON. Backed by Yahoo Finance's public chart endpoint — keyless, no rate limits in pract...

    Price mismatch22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • POST

    /api/tls-cert

    Inspect the TLS certificate of any public host: subject, issuer, validity window, days remaining, SANs, and SHA-256 fingerprint.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • POST

    /api/transfer-authorization

    Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum — the exact EIP-712 object an agent signs with its OWN key to authorize an x402 payment. We construct it; we never sign ...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Open below

    Call it from here

    POST /api/transfer-authorization

    Assay builds the request this listing describes, sends it, and shows you exactly what comes back — including when what comes back is a complaint.

    The request, built from the listing

    POST https://agent402.tools/api/transfer-authorization

{"to":"0x2222222222222222222222222222222222222222","from":"0x1111111111111111111111111111111111111111","amount":0.01,"network":"base"}

    Declared inputsamountfromnetworkto

    Listed at $0.003. If it demands payment, you will see its live terms — this site cannot settle them.

    This page holds no key and cannot move money. Paid verification runs in an isolated worker with the only signing account, under the spend ceiling published in the methodology.

  • GET

    /api/tx-status

    Check the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Read-only. ?hash=0x…&network=base

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/usdc-balance

    Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, or Ethereum. Read-only on-chain call. ?address=0x…&network=base

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-air-quality

    Current air quality index and pollutant concentrations for any location: US AQI, PM2.5, PM10, ozone, NO2, SO2, CO. Open-Meteo air quality API, no key, global. ?lat=28.61&lon=77.23.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-alerts

    Active National Weather Service alerts for a US state as clean JSON: event, severity, headline, affected areas, onset/expiry. Live government data, no key. ?area=CA.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-current

    Current weather conditions for any location on Earth: temperature, feels-like, humidity, wind speed/direction/gusts, precipitation, cloud cover, pressure, and human-readable condition. Open-Meteo, no key, global. ?lat=48.86&lon=2.35.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-daily

    7-day daily weather forecast for any location: high/low temp, precipitation sum and probability, max wind, UV index, sunrise/sunset. Open-Meteo, no key, global. ?lat=35.68&lon=139.69.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-forecast

    Multi-period weather forecast for a US location from api.weather.gov (NWS, public domain). Give latitude and longitude; returns the place plus upcoming forecast periods (temp, wind, conditions). US coverage only. ?lat=40.71&lon=-74.01

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/weather-hourly

    48-hour hourly weather forecast for any location: temperature, precipitation probability and amount, wind, cloud cover, humidity. Open-Meteo, no key, global. ?lat=-33.87&lon=151.21.

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/x402-quote

    Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON — what an agent needs to decide whether/how to pay. Read-only; does not pay. ?url=https://api.example.com/paid&method=GET

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • POST

    /v1/nano/chat/completions

    OpenAI-compatible chat completions, nano tier: gpt-4.1-nano, gpt-5-nano, gemini flash-lite, small llama/ministral/qwen, deepseek-chat — $0.003 per call in USDC over x402, priced for high-frequency agent loops. Same wire format as /v1/chat/completi...

    as listed22h agoagent402.tools

    $0.003
    per call, USDC
    Try it
  • GET

    /api/college-lookup

    Look up US colleges by name via the Dept. of Education College Scorecard: state, out-of-state tuition, overall admission rate, and undergraduate size. Live gov data. ?name=Stanford&limit=5

    as listed22h agoagent402.tools

    $0.004
    per call, USDC
    Try it
  • GET

    /api/device-recalls

    Search FDA medical-device recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key. ?q=insulin+pump&limit=5

    as listed22h agoagent402.tools

    $0.004
    per call, USDC
    Try it
  • GET

    /api/drug-adverse-events

    Top reported adverse reactions for a drug from the FDA FAERS database (openFDA), ranked by report count — a fast read on a drug's real-world safety signal. Live FDA data, no key. ?drug=aspirin&limit=10

    as listed22h agoagent402.tools

    $0.004
    per call, USDC
    Try it

Buyer reviews

none yet · a review costs a settlement

Nobody has bought from agent402.tools through an address that came back to write about it. Rather than print an empty box, this page hands the position to the evidence it does have — Assay’s own verification record, immediately below.

  1. 01

    Pay the merchant

    Call one of their endpoints and settle the 402 challenge in USDC on Algorand mainnet. That transfer is the whole credential.

  2. 02

    Sign the settlement

    Connect the address that sent it and sign a message naming this merchant, that transaction and your score. Assay stores no account and no password.

  3. 03

    The receipt travels with it

    Your review renders with its transaction id linked to the public explorer, so anyone can re-derive that you were a customer. One settlement buys one review.

Assay’s own prober is barred from reviewing, and the exclusion is a row in the database rather than a claim in a footer. Own this payout address? Claim the listing

Verification record

last sweep 22h ago · 514 of 514 covered

Nobody has reviewed agent402.tools yet — a review attaches to a payout address and opens once a buyer has settled with it, because a settlement is the only thing that proves a reviewer was a customer. Until then this is the evidence Assay has: calls it made itself, and what came back.

What the last sweep found

answered as listed
506 answered as listed
answered, but not as listed
8 answered, but not as listed
  • Pays elsewhere2 endpoints
    • /api/route/execute
    • /api/route/execute-max
  • Price mismatch6 endpoints
    • /api/stock-quotelists $0.01, demands $0.003
    • /api/skill/domain-intellists $0.25, demands $0.075
    • /api/answerlists $0.03, demands $0.08
    • and 3 more

List every endpoint with a finding · checked 22h ago

Settled payments

Delivered for free, on proof of work

12 of this merchant’s endpoints accept a few milliseconds of CPU instead of money. Assay solved the puzzle and got real content back, which turns “it challenged for payment” into “it actually delivers” at no cost — and you can reproduce it from the endpoint list.

List the 12 you can call for nothing

Also in utilities

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