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Browse admitted endpoints and inspect what each tool does before choosing one for your task.
3402 tools admitted
| Tool | Purpose | Categories | Method | Protocol | Listed price |
|---|---|---|---|---|---|
| Happenstance · Start a new person research request. Include as many details as p | Given a free-text description of a person, returns a researched profile covering employment, education, projects, writings, hobbies and a summary. | People search | POST | MPP | 0.3 asset 0x20c0..8b50 per request on tempo:mainnet |
| Hash | Computes a cryptographic hash (sha256, sha512, sha1 or md5) of a text string, returned as hex and base64. | Utilities | POST | x402 | 0.001 USDC per call on Base (also payable free via proof-of-work) |
| hash | Computes cryptographic hash digests — sha256, sha512, sha1 or md5 — of UTF-8 text or base64-encoded bytes. | Utilities | POST | x402 | 0.001 USDC per call on Base |
| Hash + HMAC | Computes MD5, SHA-1, SHA-256, SHA-384 or SHA-512 digests or HMACs of given text, output as hex, base64, or base64url. | Utilities | POST | x402 | 0.001 USDC per call on Base |
| Hash Digest | Computes SHA-256, SHA-512 and/or Keccak-256 hex digests of an input string. | Utilities | POST | x402 | 0.001 USDC per call on Base |
| Hashing, HMAC & Checksum Suite | Computes cryptographic hash digests of input data under chosen algorithms, and can HMAC-sign or verify a signature. | Utilities | POST | x402 | 0.01 USDC per call on Base |
| HazardPulse | Returns a global or per-country natural-hazard/disaster alert signal (CALM/ACTIVE/ELEVATED/SEVERE) built from GDACS and USGS feeds. | Weather environment | GET | x402 | 0.05 USDC per call on Base |
| head | Returns the current Base mainnet block height and base fee per gas in wei, read from the chain at request time. | Onchain data | GET | x402 | 0.01 USDC per call on Base |
| heartbeat | Returns a freshness heartbeat (list date, address count, fetched_at) for the Japan MOF and OFAC sanctions lists, without the addresses themselves. | Compliance screening | GET | x402 | 0.001 USDC per call on Base |
| hello | Returns a greeting and settlement timestamp as an end-to-end smoke test, to verify an x402 payment path before spending on real data. | API testing | GET | x402 | 0.001 USDC per call on Base |
| hello | Returns a static greeting to verify x402 payment integration end-to-end; not a real data product. | API testing | GET | x402 | $0.001 per call (per listing/docs; asset decimals unspecified, Base Sepolia testnet) |
| hello | Demo hello-world endpoint; returns a greeting message and a timestamp. | API testing | GET | x402 | 0.001 USDC per call on Base |
| hello | Returns a static greeting in a standard envelope to verify an x402 payment round trip end to end; not a real data product. | API testing | GET | x402 | $0.001 USDC per call on Base |
| hello | Returns the fixed string "Hello World" after verifying x402 payment; a connectivity test, not a data source. | API testing | GET | x402 | 0.001 USDC per call on Base |
| HelpMyAgent | Searches French companies by name, SIREN or SIRET (optionally filtered by location) and returns matching structured company records. | Company data | POST | x402 | 0.002 USDC per call on Base |
| Hermes Commerce | Deterministically repairs malformed JSON from agent tool outputs, with optional validation against a supplied JSON Schema. | Utilities | POST | x402 | $0.01 USDC per call on Base |
| Hermes Commerce | Checks whether one public URL is alive and returns its HTTP status, redirects, content type, size and title. | Website analysis | POST | x402 | 0.01 USDC per call on Base |
| Hijri Date Converter | Converts a Gregorian date to Hijri (Umm al-Qura calendar) or vice versa, returning day/month/year and Arabic/English month names. | Utilities | GET | x402 | 0.01 USDC per call on Base |
| history | Returns daily price fixings for one GPU/compute index ticker over a date range. | Compute pricing | GET | x402 | 0.05 USDC per call on Base |
| history | Returns the STANDARD supply ledger history, optionally windowed by hours. | Defi, Market prices | GET | x402 | 0.02 USDC per request on Base |
Catalog entries reflect the reviewed source snapshot. Listing is not proof of current availability, wallet compatibility, payment or execution.