agent402.tools

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

  Validate a JSON document against a JSON Schema (draft-07 subset) and get the list of violations. Supports type, required, properties, items, enum, const, min/max, length, pattern, format, anyOf/allOf/oneOf/not, addition…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/jsonl

  Convert between a JSON array and JSONL/NDJSON (one JSON object per line). mode: to-jsonl (array → lines) or from-jsonl (lines → array). For streaming records to and from agents and datasets.

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/jwt-decode

  Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.)

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/jwt-sign

  Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same toke…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/jwt-verify

  Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/leap-year

  Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/levenshtein

  Levenshtein edit distance between two strings, plus a 0-1 similarity ratio.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/linear-regression

  Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend extrapolation (e.g. p…

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/loan-payment

  Compute the monthly (or per-period) payment on a fully-amortizing loan: mortgage, auto, student loan, business loan. Returns the periodic payment, total paid over the term, and total interest. Matches Excel's PMT(rate, …

  SolanaCommerce

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/loop-gate

  Should the loop run another iteration? Send the goal, the iteration that just finished (lastOutput, iteration), and optionally maxIterations, a budget { spentUsd, maxUsd }, the history of earlier iterations (up to 20 of…

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/lorem

  Placeholder text.

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

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

  Render CommonMark + GFM markdown to HTML.

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/mime

  Look up a MIME type by file extension.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/morse

  Encode text to Morse code or decode it back. mode: encode (default) or decode. Words separated by ' / '.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/moving-average

  Compute simple (SMA) and exponential (EMA) moving averages over a numeric series. Returns one value per input position - the first (window-1) SMA values are null since there isn't enough history. EMA uses the standard a…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/nft-metadata

  Resolve the metadata for a single NFT: title, description, image URLs (original + cached CDN), attributes/traits, and the standard (ERC-721 vs ERC-1155). Useful when you have a contract+tokenId and need the display data…

  SolanaOnchain data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/npv

  Compute the net present value of a stream of cashflows at a given discount rate. Index 0 is treated as t=0 (today, not discounted); indices 1..n are discounted by (1+rate)^t. Matches Excel's NPV but with the conventiona…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

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

  Format a number: thousands separators, fixed decimals, optional currency, or compact (1.2K / 3.4M).

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/onramp-link

  Generate a single-use hosted onramp URL that lets a human fund any wallet with a card or Apple Pay - the fastest way to put real USDC into an agent's wallet. Returns the ready-to-open URL, and a fee-inclusive quote when…

  SolanaOnchain data

  $0.001/ request

  2026-10-27

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

  Compare two OpenAPI 3.x or Swagger 2.x documents and return a structured diff: added / removed / changed endpoints, with a conservative "is any change breaking?" flag. Breaking = an endpoint or required-2xx status was r…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-extract

  Flatten an OpenAPI 3.x or Swagger 2.x spec into a structured list of callable endpoints - one row per operation with method, path, operationId, summary, tags, parameters (name / in / required / type), JSON-body flag, an…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-mock-response

  Synthesize a JSON response body for one operation + status code in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId or method+path. Pick the response by explicit `status`, else the first 2xx, else…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-redact

  Shrink an OpenAPI 3.x or Swagger 2.x document for LLM context by stripping verbose meta-fields (examples, descriptions, summaries, tags, externalDocs, deprecated). Categories are explicit; default is `["examples", "desc…

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/openapi-resolve-refs

  Inline every local `$ref` in an OpenAPI 3.x or Swagger 2.x document so downstream tools see a self-contained spec. Resolves `#/components/...` (OpenAPI) and `#/definitions/...` (Swagger) JSON-pointer refs anywhere in th…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-search

  Search operations in an OpenAPI 3.x or Swagger 2.x spec against a free-text query. Tokenizes the query (lowercase, alphanumeric runs), scores each operation by which fields the tokens match - operationId +3, path +3, ta…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-security-summary

  Resolve authentication requirements across an OpenAPI 3.x or Swagger 2.x document. Returns the catalog of security schemes (`components.securitySchemes` in OpenAPI 3, `securityDefinitions` in Swagger 2) verbatim, the do…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/openapi-validate-payload

  Validate a JSON payload against the request or response schema for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId or method+path; choose `part: "request"` or `part: "response"` …

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/outliers

  Flag outliers in a numeric series using either the IQR rule (Tukey fences at 1.5·IQR - robust, default) or z-score (|z| > threshold - assumes normality). Returns the outlier values + their indices + the thresholds used …

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/password

  Generate cryptographically random passwords.

  SolanaOther

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/password-strength

  Score a password's strength: character-set size, entropy bits, a 0–4 rating, and an estimated offline crack time. The password is never stored or logged.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/pdf-info

  Inspect a PDF without downloading the whole thing into your model: page count, title, author, subject, creator, producer, creation/modification dates, encryption flag, and byte size. Body: {"url":"https://…/file.pdf"}.

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/percentage

  Percentage helper. op: "of" (a% of b), "change" (% change a→b), "ratio" (a is what % of b).

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/perp-klines

  OHLCV candles for one perpetual at any interval from 1 minute to 1 month, up to the venue's history, with a window summary of open, close, change, high, low and volume. Use it when an agent needs price history for a cha…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/perp-open-interest

  Open interest for one perpetual in coins and USD notional with its share of the venue total, or the top N contracts ranked by open interest plus the venue total. Use it when an agent needs positioning size for a market …

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/place-search

  Search open map data 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.

  SolanaSearch

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/price-coingecko

  Live spot price for up to 25 coins by coin id, one row per id in the order asked: prices[] of {id, price, change24h, lastUpdated}. Identify coins by their coin ID slug (bitcoin, ethereum, solana, usd-coin, ...), as an a…

  SolanaMarket data

  $0.001/ request

  2026-11-06

• https://agent402.tools/api/public-holidays

  Public holidays for a country and year from an open public-holiday dataset (keyless, 100+ countries): date, local name, English name, nationwide flag, and holiday types. Pairs with /api/business-days and /api/country-in…

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/qr

  Generate a QR code PNG from any text or URL.

  SolanaMedia

  $0.001/ request

  2026-10-31

• https://agent402.tools/api/querystring

  Parse a URL query string into an object, or build one from an object. mode: parse (default) | build.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/random

  Cryptographically secure randomness: N random bytes as hex, a uniform integer in a range, or a batch of up to 100 values in one call. Use it when an agent needs unpredictable values for nonces, sampling, shuffles or tes…

  SolanaDeveloper tools

  $0.001/ request

  2026-11-02

• https://agent402.tools/api/readability

  Flesch Reading Ease score and Flesch–Kincaid grade level for English text, plus word/sentence/syllable counts.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/readability-score

  Compute Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, and Automated Readability Index from text. Returns all 4 scores plus word, sentence, and syllable counts.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/regex

  Run a regular expression against text. Returns up to 100 matches with index and capture groups. Pattern ≤ 200 chars, text ≤ 10KB.

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/relative-time

  Format a timestamp as a human relative phrase ("3 hours ago", "in 2 days") versus now or a reference time.

  SolanaOther

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/reverse-geocode

  Resolve a lat/lon to a structured postal address: road, house number, city, state, postcode, country (with ISO code). No key.

  SolanaOther

  $0.001/ request

  2026-11-03

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

  Fetch a site's robots.txt and answer: may this user-agent crawl this path? Returns the matched rule and all declared sitemaps.

  SolanaWeb data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/roman

  Convert an integer (1-3999) to Roman numerals, or a Roman numeral back to an integer. Auto-detects direction.

  SolanaMedia

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/rot13

  Caesar-cipher a string. Default shift 13 (ROT13, self-inverse). Set shift for any rotation 1-25.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/rsi

  Compute the relative strength index (Wilder's smoothing, default period 14) over a price series you supply, such as daily closes. Returns one value per input position (null until the first full period), the latest value…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/search-suggest

  Search autocomplete: query suggestions for a partial input as a flat JSON array. Useful for query expansion, did-you-mean refinement, and topic exploration. Returns up to 20 suggestions.

  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.