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Detect whether a public page changed since the last hash, with a compact diff.

The 15-digit census block FIPS code containing a US coordinate, with its county and state codes and the block bounding box.

timezone-oracle: IANA time zone offset (minutes from UTC) and DST status for a given timezone name.

Translation tuned for skilled-trade work: HVAC, refrigeration, electrical and construction terms stay correct instead of collapsing into a generic word. Handles text typed fast without accent marks.

Latest Sealed BTC Forecast. Latest sealed five-minute LUMI, TENNA, and consensus forecast from TENNA Observatory, including English commentary, recent accuracy, and eligible live edge-node consensus. Reuses existing app.tenna.ai output with no extra AI call. Eligible external wallets may receive one zero-budget preview per UTC day; 0.01 USDC is the fallback rate because ACP cannot list a zero pric

Cheapest possible paid call: proves your wallet, our 402, and the receipt path work. Returns pong and a timestamp.

LLM inference API: OpenAI-compatible chat completions, send messages, get choices and usage. Cheap LLM inference for agents (Llama 3.1 8B), no key, no streaming.

Parse an SMPTE timecode (HH:MM:SS:FF, or HH:MM:SS;FF for drop-frame) at a given frame rate into its components, total frame count and real-time seconds. Drop-frame is auto-detected from a ';' separator unless dropFrame is set. Out-of-range or non-existent drop-frame values are a clean 400.

Automated TypeScript/Zod, Python Pydantic v2, and JSON Schema (Draft 2020-12) code generator microservice. Converts raw JSON payloads, API responses, or JSON Schemas into strict, ready-to-use Zod schemas, TypeScript interfaces, and Pydantic BaseModel classes with automatic format detection (UUID, ISO-8601 datetime, email, URL, EVM address) and nested object extraction.

DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure checks.

ETH Volatility Risk Premium — DVOL minus Parkinson realized vol (72h). Positive = sell-vol opportunity, negative = buy-vol. Response includes regime classification (LOW/MID/HIGH), raw inputs for audit (DVOL, RV_72h, RV_6h, spot), timestamp, and open methodology URL.

Geolocate an IPv4/IPv6 address: country, region, city, postcode, lat/lng, timezone, ISP, org, ASN, and a datacenter heuristic.

Current UK weekly average road fuel price (petrol + diesel, pence/litre), sourced live from DESNZ (UK gov)

Residential proxy fetch (up to 2MB). Returns HTTP 200 with the target body; read X-Target-Status for the origin status. Billed for the forwarded request, not for a 2xx origin response. For larger responses use /v1/proxy/large; at >17 requests a session pass is cheaper.

LinkedIn public job listings API for AI agents: JSON array of public LinkedIn job listings with title, company, location and job link when available, by keyword with location, date, job type and experience filters. For recruiting research and job-market monitoring on LinkedIn. Public listings only, no authenticated content. Provided by LinkedIn public job listings. Price: $0.005000 USDC per succes

Searches the public x402 discovery catalogue for services able to replace a broken dependency. Give the failed URL and, better still, a short description of what it did and the fields you need back; matches are scored on overlap between your task words and the candidate name, description and path, then ordered by score and price. Every hit carries the reason it matched, its price in USDC, its netw

A crypto fortune cookie: one short line of on-chain wisdom, picked by the latest Base block hash so anyone can verify the draw. For agent greetings, daily posts, games and demos of x402 payments.

What is the sales tax rate at this US address, ZIP+4 or ZIP? The combined rate and each state, county, city and district rate in the 24 Streamlined Sales Tax states (WA, OH, MI, NJ, TN, …), computed by Distill from each state’s SST rate and boundary files. Updated quarterly. $0.005 per call (x402, USDC on Base); 3 free calls a day.

Recase a string into camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Sentence case, Capital Case, Train-Case, no case, Title Case, or plain UPPER/lower — the word boundaries are detected regardless of the input casing.

Is this chain alive: TVL trend over 1y/6m/90d/30d

tokenizen vulnerability pattern search, 1032 exact-reconciled findings from 10 Sherlock contests

One-call market snapshot for a daily briefing or a pre-trade check: BTC/ETH/SOL spot with 24h change, the crypto fear & greed index, and SPY/QQQ/DIA/IWM quotes. Cheaper than the three parts bought separately. Each source reports its own status; if every source fails the call returns 503 and is not charged. JSON.

Signed market-state receipt for one exchange. OPEN/CLOSED/HALTED/UNKNOWN - Ed25519 signed, 60s TTL.

TikTok profiles, posts, comments, fast-API feeds, search discovery.

Paid book chapter (x402): Automate the Boring Stuff with Python: What Is Programming. Unit of a larger practical-skills library; free catalog at /library/discovery.json. Book slug: automatetheboringstuffwithpythonnew. Response format: Markdown (.md) for agent parsing. USDC on Base via Coinbase CDP facilitator. Free teasers and discovery.json require no payment.

Compute a SHA-256 hex digest of a text payload. Cryptographic hash / checksum helper. Not an attestation.

Inspect a public HTTPS origin for advertised APIs, OpenAPI documentation and x402 discovery metadata before choosing a paid service.

List markets with price and open interest

Get current gas price information (base fee, priority fee suggestion, gas price)

Audits a website for AI agent and AI crawler readiness from caller-supplied inputs: robots.txt, HTML, headers, llms.txt, sitemap lastmod, /.well-known. Names the policy per AI token (GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Google-Extended, Gemini-User, KagiBot, Kagi-User, Applebot-Extended, Bytespider, CCBot, Amazonbot, meta-ex