Web & Data

List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.

Estimate reading and speaking time for a text at configurable words-per-minute rates (defaults: 200 wpm reading, 130 wpm speaking).

CRC-16 over the input payload in one of several standard variants (ccitt-false, xmodem, modbus, ibm; default ccitt-false). Returns the checksum as an unsigned integer and 4-digit hex. Non-cryptographic.

Compute a cryptographic digest (SHA-2, SHA-3, BLAKE2, and legacy SHA-1/MD5/RIPEMD-160) of some data. The input may be utf8/hex/base64/base64url and the digest is returned as hex/base64/base64url.

Build a valid .ics document from event fields (summary, start/end, location, …).

Resolve current DNS records and fetch public RDAP registration metadata for a domain.

Fetch public IP network, ASN, organization, location, and timezone context. This does not claim an abuse or threat score.

Fetch a public RSS or Atom feed with private-network blocking and return bounded current entries.

HTTP status, final content-type and response size for a URL (HEAD then GET fallback)

Merge 2-10 PDFs into one, in order. Deterministic, 0.003/call. Returns the merged PDF base64-encoded.

Returns normalized metadata for any npm package, current version, license, dependency list, and whether it's been deprecated, without needing to parse the full, much larger raw registry response. For agents auditing a project's dependency tree or deciding what to install.

One-call web research for AI agents: searches the live web AND reads the top result pages as clean markdown — content, not just links. Give a question, get ranked results plus the full readable text of the best pages. Optional ?domains=nih.gov,pubmed.ncbi.nlm.nih.gov to restrict page reading to specific sources. Pay-per-call in USDC via x402 — no signup, no API key. Use for answering questions from fresh sources, research, and RAG.

Parse an RSS/Atom feed URL and return the latest N items (title, link, published)

Add-on, air quality for one location: US AQI category and PM2.5 reading from EPA and CAMS official feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash. $0.0050 per call.

Add-on, precipitation for one location: daily rainfall plus 30-day accumulated wet-dry drought context from ERA5. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash. $0.0050 per call.

Email validation — Syntax check + live MX/deliverability + disposable-domain flag.

Latest version, licence, deprecation, repository and dependency count for an npm, PyPI or crates.io package. Live from the registry.

Add-on, air quality for one location: US AQI category and PM2.5 reading from EPA and CAMS official feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash.

[SIGNAL+PROOF] One official signal record for any signal_id and entity: current reading against the OFFICIAL threshold ladder (band, distance-to-action) plus a 5-year same-season percentile so you can tell routine from unusual. 180+ signals across macro, weather, hazard, shipping, filings, crypto and lifecycle lines. Free coverage check first at /gauge/coverage. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.

Call DefiLlama TVL/yields through our metered gateway: our rate-limit budget and a 300s cache absorb your polling, so your loop never sees a 429. Inputs: path (upstream path, e.g. /ping) and q (raw query string). Returns the upstream JSON under 'data'.

Japan Web3 Directory, full export: sourced records on Japan's JPYC/USDC, exchange, wallet and AI-agent services — every row carries an official source URL and last-verified date.

Returns clean, normalized datasets of AI model benchmarks, pricing, leaderboard scores, and Ethereum EIPs, parsed from sources that are costly to scrape.

Invoice pipeline in one call: PDF to structured Markdown (hallucination-guarded OCR), invoice field extraction, arithmetic verification, optional issuer enrichment. Flat 0.05/document (text PDFs to 20 pages, scans to 3).

Decode a 3-character World Manufacturer Identifier or 6-character low-volume identifier through the official NHTSA vPIC API.