agent402.tools

• https://agent402.tools/api/dns

  Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostnam…

  SolanaIdentity

  $0.001/ request

  2026-11-03

• https://agent402.tools/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.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/duration

  Parse a duration like "2h30m" / "1d4h" / "90s" to seconds, or humanize a number of seconds.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/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.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/edgar-company-lookup

  Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns ticker, cik (zero-padded, 0000320193), cikInt (320193) and the registered company name. Backed by SEC's co…

  SolanaMarket data

  $0.001/ request

  2026-11-06

• https://agent402.tools/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.

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/email-guard

  Read one email the way an agent that triages mail should before acting on it: observations with evidence and offsets, no score and no verdict. Send the raw RFC 5322 message (multipart, base64 and quoted-printable decode…

  SolanaIdentity

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/email-validate

  Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).

  SolanaIdentity

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/ens-resolve

  Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.

  SolanaOnchain data

  $0.001/ request

  2026-11-03

• https://agent402.tools/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.

  SolanaOnchain data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/feedback/summary

  What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…

  SolanaOnchain data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/finance

  Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 pi…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 …

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 amp…

  SolanaOther

  $0.001/ request

  2026-10-28

• https://agent402.tools/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,…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 al…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/gas-estimate

  Current gas price on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, Arc, or Robinhood Chain - for an agent budgeting a transaction: returns network, gasPriceGwei and gasPriceWei (decimal strin…

  SolanaOnchain data

  $0.001/ request

  2026-11-05

• https://agent402.tools/api/gcd-lcm

  Greatest common divisor and least common multiple of two or more integers, computed exactly (arbitrary precision). Useful for cycle alignment, scheduling periods and fraction work. Signs are ignored; a zero makes the LC…

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/geo-distance

  Great-circle distance between two latitude/longitude points using the haversine formula. Returns kilometers and miles. Deterministic.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/geocode

  Resolve a free-form address or place name to coordinates: lat/lon, display name, bounding box, place type. No key.

  SolanaOther

  $0.001/ request

  2026-11-03

• https://agent402.tools/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.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 cont…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/hash

  Cryptographic hash of a text string - sha256 (default), sha512, sha1 or md5 - returned as hex and base64. Use it for content fingerprints, integrity checks and deterministic ids; pure computation, instant.

  SolanaDeveloper tools

  $0.001/ request

  2026-11-06

• https://agent402.tools/api/hex

  Hex encode or decode text. mode: encode (default) or decode.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/hidden-text-scan

  Check an email or web page for text a person reading it would not see but an AI reading it would: HTML comments, display:none or hidden elements, white-on-white or off-screen text, zero-width and tag characters, base64 …

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/hmac

  HMAC signature of a message with a shared key. Algorithms: sha256 (default), sha512, sha1. Returns hex and base64.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/html-entities

  Encode text to HTML entities or decode them back. mode: encode (default) or decode.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/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 outlin…

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/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, /…

  SolanaWeb data

  $0.001/ request

  2026-11-04

• https://agent402.tools/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…

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/html-strip

  Strip all HTML tags and return plain text. Preserves block-level structure (paragraphs and headings become newline-separated). hiddenContent reports text a reader cannot see (HTML comments, display:none or hidden elemen…

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/html-table

  Extract a <table> from an HTML string as JSON rows (header-keyed) or CSV. Useful for prices, schedules, sports stats, or anything an agent has already fetched as HTML. If multiple tables match, the first is used.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/html-to-markdown

  Convert an HTML fragment or document you already have into clean markdown. hiddenContent reports text a reader cannot see (HTML comments, display:none or hidden elements, white-on-white or off-screen text, zero-width ch…

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/http-check

  Check any public URL: status code, latency, final URL after redirects, and response headers. The uptime primitive for agent monitors.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/iban-validate

  Validate an IBAN: country code, length, and the ISO 13616 mod-97 checksum.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/ics-parse

  Parse iCalendar (.ics) text into structured JSON events: summary, start/end, location, organizer, attendees, status, and RRULE. Optional bounded recurrence expansion (expand:true, capped occurrences). Deterministic, pur…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/image-resize

  Resize an image to given pixel dimensions. Send a base64 PNG/JPEG/BMP and width and/or height (give one to scale proportionally). Returns the resized image. Deterministic, no network.

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/image-thumbnail

  Make a square thumbnail of an image - scales and center-crops to NxN (default 128). Send a base64 image and optional size. Returns the thumbnail. Deterministic, no network.

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/irr

  Compute the internal rate of return (IRR) of a cashflow stream - the discount rate at which NPV = 0. Index 0 is treated as t=0 (typically the negative initial investment); indices 1..n are inflows in subsequent periods.…

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/isbn-validate

  Validate an ISBN-10 or ISBN-13 checksum (hyphens/spaces ignored) and report which format it is.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/iso-week

  Get the ISO 8601 week number, ISO day-of-week, quarter, and day-of-year for any date. Useful for fiscal/reporting calendars, weekly aggregations, and sprint planning.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-diff

  Deep-compare two JSON values. Returns a list of changed/added/removed paths (capped at 1000 differences).

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-flatten

  Flatten nested JSON to dot-path keys, or unflatten dot-path keys back to nested JSON. mode: flatten (default) | unflatten.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-format

  Validate, pretty-print (any indentation, 0-8 spaces), or minify JSON, optionally with object keys sorted. canonical: true returns the RFC 8785 (JCS) canonical form - keys sorted, no whitespace, ECMAScript number and str…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-merge

  Deep-merge two JSON objects (b wins on conflicts; arrays are concatenated).

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-pointer

  Resolve an RFC 6901 JSON Pointer (e.g. /items/0/name) against a JSON value. Returns the value or found:false.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-query

  Extract a value from JSON by dot/bracket path, e.g. "items[2].name".

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-schema-infer

  Infer a draft-07 JSON Schema from sample JSON document(s). Send one sample as json, or several as samples. Heuristic merge rules: required = keys present in every sample, conflicting types become a type union, integer w…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/json-to-yaml

  Convert JSON to YAML.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

By chain

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.