Explore APIs

UK HM Land Registry sold property prices by postcode.

x402 payability check: reachable + well-formed 402 + (Solana) destination-ATA existence

Find the best DeFi yields across 500+ protocols and all major chains: filter by token (USDC, ETH...), chain, protocol, stablecoin-only and minimum TVL; returns APY (base + reward), 30-day mean APY, 7-day change, TVL, impermanent-loss risk and outlook. Sort by APY or TVL.

XR-Telemetry XRPL macro telemetry snapshot

Implied volatility (IV) of crypto options per expiry from Deribit, Bybit and OKX: ATM IV, 25-delta skew, put/call open interest ratio, max pain and Deribit's DVOL index; with an expiry, the options chain per strike with the greeks as each venue publishes them. Volatility surface inputs for BTC and ETH options. Data only. Bad input is free; nothing is charged when no venue answers.

Use before paying any x402 endpoint, so you don't pay a dead or mispriced one: checks it is alive, correctly payment-gated, its price/network/asset, latency, and whether it fits your max_price_usd. Sends one unpaid request, never pays. ~9% of paid listings we scanned were dead. Errors (never charged): 400 bad input, 422 source could not be fetched or parsed, 429 rate limited (30/min), 502 upstream

Check whether a website, business, or wallet is a scam before an agent trusts or pays it — fraud, phishing and rug-risk screening. Returns verdict (safe/caution/avoid), trust_score, domain age, red_flags. Input: ?target=domain

Drop-in Exa-compatible contents: send urls (or ids) and text / highlights options exactly as for Exa /contents and get results with id, url, title, author, publishedDate, text and highlights plus per-URL statuses, as clean markdown with a prompt-injection verdict. Up to 10 URLs for $0.004. Not affiliated with Exa.

Returns the raw public trade tape of Binance, Coinbase, Kraken, OKX or Bybit for one BASE/QUOTE pair, oldest first, exactly as the exchange reports it — no smoothing, no merging of prints. side is the side of the aggressor: reported directly by Kraken, OKX and Bybit, derived from the maker flag at Binance, and inverted from the maker side at Coinbase; side_source names which case applies. Where an

Distributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.

Use when you need callable agent services for a capability across protocols: x402 listings ranked by relevance weighted by 30-day paying wallets, plus hosted MCP servers from the Official MCP Registry (a capped subset, count in coverage; those naming x402, L402, MPP or pay-per-call first; that registry publishes no prices). L402 and MPP listings are not covered. ?q= required. $0.002 USDC per call.

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.

Summarise IPv4 or IPv6 CIDR blocks into the minimal set (merging adjacent and overlapping blocks) plus the covering supernet.

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.