agent402.tools
Base, Arbitrum, Avalanche, Celo, Monad, Optimism, Polygon, Sei · payout 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Answers HTTP 402
0 of 8 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-19
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
2324 x402-style payments from 88 distinct payers, $45.65 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 2,324
- Outside payers
- 88
- USDC
- 45.65
All USDC received at this payout address: $45.66 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 600 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | 2324 x402-style payments from 88 distinct payers, $45.65 USDC in the last 7 days (Base, exact read) |
| Arbitrum | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Avalanche | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Celo | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Monad | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Optimism | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Polygon | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Sei | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
- Hosts
- agent402.tools
- Listings
- 4,821 registered in the x402 catalogue
- Price range
- $0.0010 to $2.00 per call, as registered
- Categories (auto)
- Developer tools (1096), Market data (840), Onchain data (704), Other (585), Inference (416), Web data (312), Media (248), Identity (224), Search (136), Agents (124), Security (120), Commerce (16)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0xabf4fa…e2a9d0 to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 4,821
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
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. | Base | Web data | $0.001 | 2026-09-30 |
https://agent402.tools/api/roman Convert an integer (1-3999) to Roman numerals, or a Roman numeral back to an integer. Auto-detects direction. | Base | Media | $0.001 | 2026-10-03 |
https://agent402.tools/api/rot13 Caesar-cipher a string. Default shift 13 (ROT13, self-inverse). Set shift for any rotation 1-25. | Base | Developer tools | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-09-30 |
https://agent402.tools/api/semver Parse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags). | Base | Search | $0.001 | 2026-09-30 |
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)). | Base | Security | $0.001 | 2026-09-30 |
https://agent402.tools/api/slugify Turn any text into a URL-safe slug (lowercase, hyphenated, diacritics stripped). | Base | Web data | $0.001 | 2026-09-30 |
https://agent402.tools/api/sol-price USD price for up to 50 Solana token mints in one call from Jupiter's price API v3: price, 24h change, liquidity, decimals and the block the price was read at. Mints Jupiter does not price come back listed under missing … | Base | Market data | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-09-30 |
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).… | Base | Identity | $0.001 | 2026-09-30 |
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 … | Base | Developer tools | $0.001 | 2026-09-30 |
https://agent402.tools/api/stats Descriptive statistics for an array of numbers: count, sum, mean, median, mode, min, max, range, variance, stddev, and percentiles. | Base | Developer tools | $0.001 | 2026-09-30 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
https://agent402.tools/api/stock-quote End-of-day US equity quote from a licensed feed: last close, day range, previous close and the change between them, consolidated across three venues. Use it when an agent needs a current price for a US stock without an … | Base | Market data | $0.001 | 2026-10-05 |
https://agent402.tools/api/testnet-fund Fund any address with testnet money via the Coinbase 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 befo… | Base | Other | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-10-03 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
https://agent402.tools/api/time Current time: UTC ISO, epoch seconds/ms, day of week/year, ISO week - optionally rendered in any IANA timezone. | Base | Developer tools | $0.001 | 2026-09-30 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-10-02 |
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. | Base | Identity | $0.001 | 2026-09-30 |
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. | Base | Inference | $0.001 | 2026-09-30 |
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. | Base | Onchain data | $0.001 | 2026-09-30 |
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 Alchemy's aggregated price feed. Use this for portfolio-value calculations or to denominate a balance i… | Base | Market data | $0.001 | 2026-09-30 |
https://agent402.tools/api/truncate Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries. | Base | Developer tools | $0.001 | 2026-09-30 |
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/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Read-on… | Base | Onchain data | $0.001 | 2026-10-05 |
https://agent402.tools/api/ulid Generate ULIDs (sortable, timestamp-prefixed identifiers). | Base | Other | $0.001 | 2026-10-03 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
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. | Base | Developer tools | $0.001 | 2026-10-03 |
https://agent402.tools/api/url-parse Parse a URL into components: protocol, host, port, path, query params (decoded), hash, origin, punycode hostname. | Base | Developer tools | $0.001 | 2026-09-30 |
https://agent402.tools/api/user-agent Heuristic user-agent string parser: browser, version, OS, device class, and bot detection. | Base | Developer tools | $0.001 | 2026-09-30 |
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 … | Base | Developer tools | $0.001 | 2026-10-05 |
https://agent402.tools/api/uuid-validate Validate a UUID and report its version (1-8) and variant. Accepts hyphenated or braced forms. | Base | Developer tools | $0.001 | 2026-09-30 |
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. | Base | Other | $0.001 | 2026-09-30 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
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… | Base | Market data | $0.001 | 2026-10-05 |
https://agent402.tools/api/yaml-to-json Parse YAML into JSON (safe schema - no code execution). | Base | Developer tools | $0.001 | 2026-09-30 |
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… | Base | Developer tools | $0.001 | 2026-09-30 |
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… | Base | Inference | $0.001 | 2026-10-05 |
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… | Base | Inference | $0.001885 | 2026-09-30 |
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… | Base | Inference | $0.001885 | 2026-10-05 |
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… | Base | Agents | $0.002 | 2026-09-30 |
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… | Base | Onchain data | $0.002 | 2026-10-05 |
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. | Base | Onchain data | $0.002 | 2026-09-30 |
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… | Base | Market data | $0.002 | 2026-09-30 |
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. | Base | Market data | $0.002 | 2026-09-30 |
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… | Base | Developer tools | $0.002 | 2026-09-30 |
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… | Base | Onchain data | $0.002 | 2026-10-04 |
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… | Base | Developer tools | $0.002 | 2026-09-30 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.