agent402.tools

• https://agent402.tools/api/semver

  Parse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags).

  SolanaSearch

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/sharpe-ratio

  Risk-adjusted return: (mean return - risk-free rate) / sample standard deviation of returns (n-1). Pass periodsPerYear to also get the annualized ratio (× sqrt(periodsPerYear)).

  SolanaSecurity

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/slugify

  Turn any text into a URL-safe slug (lowercase, hyphenated, diacritics stripped).

  SolanaWeb data

  $0.001/ request

  2026-10-27

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

  USD price for up to 50 Solana token mints in one call from a Solana DEX aggregator's price API: price, 24h change, liquidity, decimals and the block the price was read at. Mints the aggregator does not price come back l…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/sort-lines

  Sort the lines of a text. order: asc (default) | desc | numeric. unique:true removes duplicates; ci:true is case-insensitive.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/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).…

  SolanaIdentity

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/sql-cert-verify

  Verify an Ed25519 execution certificate against the exact SQL statement you are about to run - the gate your database layer calls before it obeys an agent. Checks the signature, the certificate version, the expiry, and …

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/stats

  Descriptive statistics for an array of numbers: count, sum, mean, median, mode, min, max, range, variance, stddev, and percentiles.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/stats-summary

  Compute the full descriptive-stats panel for an array of numbers in one call: count, sum, mean, median, mode, stddev (sample), variance, min, max, range, q1, q3, IQR. Beats calling 12 separate tools when you already hav…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/stock-quote

  End-of-day US equity quote from a licensed feed: last close, day range, consolidated volume, previous close and the change between them, from the consolidated end-of-day summary across all US exchanges and ATSs. Use it …

  SolanaMarket data

  $0.001/ request

  2026-11-06

• https://agent402.tools/api/testnet-fund

  Fund any address with testnet money from a testnet faucet - USDC (1) or ETH (0.0001) on Base Sepolia, USDC (1) or SOL on Solana devnet - everything an agent needs to rehearse the complete x402 payment loop safely before…

  SolanaOther

  $0.001/ request

  2026-11-03

• https://agent402.tools/api/text-chunk

  Split text into overlapping chunks for RAG ingestion - by characters (default) or by exact LLM tokens. Returns the chunks plus offsets. Deterministic, no model needed.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

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

  Line-by-line diff of two texts (LCS). Returns unified-style ops and change counts. Up to 2000 lines per side.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/text-stats

  Counts for any text in one call: characters (Unicode code points), words, sentences, paragraphs, avgWordLength, readingTimeMinutes (200 words a minute) and estimatedTokens, a rough LLM token estimate (about 4 characters…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/time

  Current time: UTC ISO, epoch seconds/ms, day of week/year, ISO week - optionally rendered in any IANA timezone.

  SolanaDeveloper tools

  $0.001/ request

  2026-11-03

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

  Convert between epoch (s or ms), ISO 8601, and any IANA timezone. Give a value (epoch seconds or milliseconds, an ISO string, or 'now'), get every representation back: utc, epochSeconds, epochMillis and, with tz, timezo…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/timezone-convert

  Convert a datetime from one IANA timezone to another. Accepts ISO 8601, Unix timestamps (seconds or milliseconds), or natural date strings. Returns the converted time in both timezones with UTC offset.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/tls-cert

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

  SolanaIdentity

  $0.001/ request

  2026-11-03

• https://agent402.tools/api/token-count

  Count exact LLM tokens for a string using the real OpenAI BPE (o200k_base for gpt-4o/o-series, cl100k_base for gpt-4/gpt-3.5). Deterministic, offline - budget context windows without calling a model.

  SolanaAI models

  $0.001/ request

  2026-10-27

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

  Resolve an ERC-20 contract address to its on-chain metadata: symbol, decimals, name, and logo URL where available. Use this to humanize a raw contract address before showing it to a user or before computing fiat values.

  SolanaOnchain data

  $0.001/ request

  2026-10-27

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

  Return the current USD spot price for an ERC-20 token, identified by its contract address and network. Sourced from an aggregated market price feed. Use this for portfolio-value calculations or to denominate a balance i…

  SolanaMarket data

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/truncate

  Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/tx-status

  Check the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei/Arc/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Rea…

  SolanaOnchain data

  $0.001/ request

  2026-11-03

• https://agent402.tools/api/ulid

  Generate ULIDs (sortable, timestamp-prefixed identifiers).

  SolanaOther

  $0.001/ request

  2026-11-03

• https://agent402.tools/api/unit-convert

  Convert a value between units of length, mass, temperature, volume, area, speed, time, data, pressure, energy, power, angle, frequency - every unit the retired convert-* endpoints handled (e.g. miles, kilometers, kilogr…

  SolanaDeveloper tools

  $0.001/ request

  2026-11-04

• https://agent402.tools/api/url-code

  Percent-encode or decode a string for URLs. mode: encode (default) or decode. component: true (default) uses encodeURIComponent semantics.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

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

  Parse a URL into components: protocol, host, port, path, query params (decoded), hash, origin, punycode hostname.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/user-agent

  Heuristic user-agent string parser: browser, version, OS, device class, and bot detection.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/uuid

  UUIDs on demand: version 4 (random) or version 7 (time-ordered, sortable), up to 100 per call. Use it when an agent needs identifiers for records, requests or files, or a sub-cent call to test an x402 client end to end …

  SolanaDeveloper tools

  $0.001/ request

  2026-11-03

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

  Validate a UUID and report its version (1-8) and variant. Accepts hyphenated or braced forms.

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/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.

  SolanaOther

  $0.001/ request

  2026-11-03

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

  Verify a webhook's HMAC signature against the correct per-provider scheme: GitHub (X-Hub-Signature-256, sha256=hex), Stripe (Stripe-Signature t/v1 over "<t>.<body>" with replay tolerance), Shopify (X-Shopify-Hmac-Sha256…

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/api/x402-market-pulse

  Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…

  SolanaMarket data

  $0.001/ request

  2026-11-03

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

  Parse YAML into JSON (safe schema - no code execution).

  SolanaDeveloper tools

  $0.001/ request

  2026-10-27

• https://agent402.tools/v1/decisions

  OpenAI's Decisions API on its own wire: point an OpenAI SDK's base URL here and client.decisions.create works unchanged, paid per call. Send input (text, or user messages with input_text parts) and questions; get back a…

  SolanaAI models

  $0.001/ request

  2026-11-06

• https://agent402.tools/v1/judge

  Ask a typed question about any content and get an answer your code can branch on, not prose to parse. Send state (the content, a string or object) and questions (your own ids mapped to question objects); get back answer…

  SolanaDeveloper tools

  $0.001/ request

  2026-11-06

• https://agent402.tools/v1/metered/chat/completions

  OpenAI-compatible chat completions priced from the request itself: the 402 quotes this exact body, from $0.001, and a buyer on the upto scheme settles the tokens actually used under that quote. Use it when an agent send…

  SolanaAI models

  $0.001/ request

  2026-11-06

• https://agent402.tools/v1/metered/gemini

  Google's generateContent wire priced from the request itself: the 402 quotes this exact body, from $0.001, with upto buyers settling actual usage. Use it when an agent built on the Gemini SDK needs a supported model pai…

  SolanaAI models

  $0.001/ request

  2026-10-27

• https://agent402.tools/v1/metered/messages

  The Anthropic Messages wire priced from the request itself: the 402 quotes this exact body, from $0.001, with upto buyers settling actual usage under the quote. Use it when an agent built on the Anthropic SDK, or Claude…

  SolanaAI models

  $0.0019/ request

  2026-11-06

• https://agent402.tools/api/a2a-card-validate

  Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa…

  SolanaAgents

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/address-label

  Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa…

  SolanaOnchain data

  $0.002/ request

  2026-10-30

• https://agent402.tools/api/b20-activation-check

  Is B20 live on Base mainnet? Queries the Activation Registry precompile for base.b20_asset and base.b20_stablecoin (or a custom feature id). Honest pre-launch too: reports not-activated until the registry flips.

  SolanaOnchain data

  $0.002/ request

  2026-11-03

• https://agent402.tools/api/black-scholes

  Price a European option (call or put) with the Black-Scholes-Merton model, plus the greeks (delta, gamma, vega, theta, rho). Continuous dividend yield supported. Greeks are per unit: theta is per year, vega per 1.00 cha…

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/bond-ytm

  Solve a bond's yield to maturity from its market price - the annual rate that present-values the coupons plus face to that price. Bracketed bisection root-find.

  SolanaMarket data

  $0.002/ request

  2026-10-27

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

  Validate a Cloudflare Turnstile, Google reCAPTCHA, or hCaptcha token server-side. You pass your OWN provider secret plus the token from the client; we relay to the provider's siteverify endpoint (never logged) and retur…

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/chain/erc1155-balance

  How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/compound-interest

  Compute future value of a principal under compound interest. Returns future value, total interest earned, and the effective annual rate (APY) given the compounding frequency. Matches Excel's FV(rate, nper, 0, -principal…

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/contract-code

  Is this address a contract, and what code does it hold? Returns isContract, deployed bytecode size, and the keccak-256 hash of the bytecode (stable fingerprint for comparing deployments) on Ethereum, Base, Polygon, Arbi…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/crypto-indicators

  RSI, MACD, EMA 20/50/200, SMA 20/50, Bollinger bands, ATR and VWAP computed deterministically from live candles for one coin and interval, with the latest series points and a plain-language summary. Use it when an agent…

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/crypto-news

  Recent crypto headlines aggregated from the public feeds of major outlets, deduplicated and newest first, each with title, source, publish time, canonical URL and a short summary, filterable by keyword, source and time …

  SolanaWeb data

  $0.002/ 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.