agent402.tools
Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests.
Pays to C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE
- Score
- None yetno buyer reviews yet
- Positive
- None yetno buyer reviews yet
- Paid calls
- 2,0894 distinct payers
- Verified
- 21h ago506 of 514 as listed
- On-chain
- C7IIHG7S…OY2XIEpayout address on Algorand
514 of 514 endpoints
- GET
/api/dns
DNS lookup for a domain. Supported record types: A, AAAA, MX, TXT, NS, CNAME.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/duration
Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/easter-date
Compute the date of Easter Sunday for a given year using the Anonymous Gregorian algorithm (Meeus/Jones/Butcher). Also returns Good Friday, Ash Wednesday, Palm Sunday, Pentecost, and the day-of-year for Easter.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/effective-annual-rate
Convert a nominal annual rate (APR) compounded m times per year into the effective annual rate (EAR / APY): (1 + apr/m)^m - 1. Set continuous:true for e^apr - 1.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/epoch-convert
Convert between Unix epoch timestamps and ISO 8601 date strings in both directions. Provide either an epoch (seconds or milliseconds) or an ISO date string. Returns both representations plus UTC and date components.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pick which method (mean / naiv...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/forecast-holt
Holt's linear trend method — level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so it grows or shrinks linearly...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/forecast-holt-winters
Holt-Winters triple exponential smoothing — level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amplitude) or multiplicative (a...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/forecast-naive
Three textbook baseline forecasts: mean (forecast = average of history), naive (forecast = last value), drift (linear extrapolation from first to last point). Use as a sanity floor — any sophisticated method (SES, Holt, Holt-Winters) should beat t...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/forecast-ses
Simple exponential smoothing (SES) — level-only forecast for series without trend or seasonality. Higher alpha (closer to 1) tracks recent values aggressively; lower alpha (closer to 0) smooths through noise. Default alpha=0.3 is a common conserva...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/gcd-lcm
Compute the greatest common divisor (Euclidean algorithm) and least common multiple of two positive integers. Also reports whether the two numbers are coprime (GCD = 1).
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/geo-distance
Great-circle distance between two latitude/longitude points using the haversine formula. Returns kilometers and miles. Deterministic.
as listed21h agoagent402.tools
Open below$0.001per call, USDCAssay 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/geo-distance {"to":{"lat":34.0522,"lng":-118.2437},"from":{"lat":40.7128,"lng":-74.006}}Declared inputsfromto
Listed at $0.001. 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.
- POST
/api/group-by
Group an array of objects by one or more keys and aggregate a numeric field — count (default), sum, avg, min, or max. The SQL GROUP BY agents reach for when wrangling JSON. Deterministic (groups in first-seen order).
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/gunzip
Decompress a base64-encoded gzip payload. Returns the result as utf8 (text) or base64 (binary). Refuses to expand past 10MB to defend against zip bombs.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/gzip
Compress a string with gzip (RFC 1952) and return it as base64. Reports input bytes, output bytes, and the compression ratio so you can decide if it was worth doing. Input can be plain text (utf8) or already-binary content (base64 or hex).
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/hash
Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/hex
Hex encode or decode text. mode: encode (default) or decode.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/hkdf-expand
HKDF extract-then-expand (RFC 5869) — derive output keying material from initial keying material, an optional salt, and an optional info/context string. Useful for deriving multiple keys from a single shared secret. Returns hex-encoded OKM.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/hmac
HMAC signature of a message with a shared key. Algorithms: sha256 (default), sha512, sha1. Returns hex and base64.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/html-entities
Encode text to HTML entities or decode them back. mode: encode (default) or decode.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/html-links
Enumerate every <a href> in an HTML string with its anchor text and rel attribute. Optionally resolves relative hrefs against a base URL and filters by a regex on the href. The deterministic way to crawl a page's outlinks without writing a regex.
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/html-meta
Extract <title>, <meta description>, OpenGraph/Twitter cards, canonical URL, and JSON-LD blocks from an HTML string. Distinct from /api/meta which fetches a URL — feed this the HTML you already have (from /api/render, /api/extract.body, or your ow...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/html-select
Run a CSS selector against an HTML string and return the matches (text, attrs, and optionally outerHTML for each). The deterministic alternative to regex when you already have the HTML and know the selector — pairs with /api/render or any page you...
as listed21h agoagent402.tools
Try it$0.001per call, USDC - POST
/api/html-strip
Strip all HTML tags and return plain text. Preserves block-level structure (paragraphs and headings become newline-separated). Faster and more predictable than running extract on a raw HTML string when you already have it.
as listed21h agoagent402.tools
Try it$0.001per call, USDC
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.
- 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.
- 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.
- 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 21h 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 21h ago
Settled payments
- /api/mime$0.001
delivered · 17h ago · round 63,830,971
CZHKZ5FQ…7Y2P7QCZHKZ5FQ2RT5THUFUYEHUKA7VEXYGA4ZLXEI32XCLREU4W7Y2P7Q
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.