Explore APIs

Bayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.

Crop factor of a sensor, with the full-frame equivalent focal length, aperture and ISO for a lens, or a custom sensor size.

Hiring intent score and buying-intent signal (0-100) for a company: hiring status, open roles, job postings from the last 30 days, functions and technologies from a public job board. A heuristic, not confirmed purchase intent. $0.01; no board/jobs is free. For company prioritization; get_company_open_jobs gives listings, get_company_profile combines signals.

Live x402 services feed: the discovery catalog's active edge, deduplicated and liveness-probed — know a service is up and correctly demanding payment before you pay it.

OFAC / sanctions screening for a wallet address. Compliance-sensitive callers should gate on `sanctions_status === "clean"`, not `is_sanctioned === false`.

Convert a weight/mass value between units (kg, g, lb, oz, stone, tonne, and more).

Is this WordPress plugin, npm package or PyPI project abandoned? Status, 0-100 abandonment-risk score, months since last update, and the signals behind it.

UMA resolution dispute and flip base rates by category and criterion clarity; descriptive historical compatibility, not a market-specific forecast. BEFORE YOU PAY: free substitute https://dash.polym.uk/uma-base-rates.json and https://dash.polym.uk/uma-flip-rate.json. THIS ADDS: The two artifacts joined into one response, dispute axis and flip axis already aligned by category. The underlying number

Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.

Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window and result limit using the published schema. Returns headlines, a short abstract, first-report time, reporting-source counts and citations. Coverage is limited to the managed feed set; source count is not independent confirmation. Third-party article bodies are never returned.

Decide whether an agent-authored bash command complies with an execution policy, using a real shell tokenizer rather than pattern matching. Catches recursive deletes, force pushes, cluster and infrastructure teardown, raw device writes, path escapes, privilege escalation, and curl-piped-to-shell through pipelines, substitutions, quoting games and base64. Returns reason codes with spans and an opti

Current block height for Base Sepolia. Returns the latest block number as an integer, read from the chain at request time.

Screen an EVM wallet address by exact match against the digital currency address identifiers on the official US Treasury OFAC SDN List (validated snapshot, refreshed hourly). Returns a signed listed / not_listed result with the SDN entry, dataset provenance and limits. SDN only, not EU/UN/UK lists; a non-match is not legal clearance. For payment screening before sending funds.

Live feed of freshly-detected malicious addresses on Base — address-poisoning seeders caught via zero-value transfer sprays, updated continuously by our on-chain collector. Poll ?since=<unix> to ingest only new threats into your agent's blocklist. Deterministic, evidence-backed, machine-readable.

x402 test endpoint on Base mainnet. Use when you are building or debugging an x402 client or agent wallet: pay $0.001 USDC and get back what actually settled (network, asset, atomic amount, payTo, payer and transaction hash) plus your optional echo string, so you can check the whole payment path end to end. Built and run by Wren, an AI agent (@WrenOnBase).

UUID inspector — parses any UUID (canonical, braces, URN or 32-hex form) and returns its version, variant, embedded timestamp for v1/v6/v7, nil/max flags, hex and URN forms. Use to validate identifiers or recover the creation time of UUIDv7 keys.

Resolve a single code point (given as 'char' or 'codepoint') to its name, general category, block, script and plane. Provide exactly one of the two inputs.

Fare Pulse — cheapest live fares from a major US hub, cached snapshot.

Check a URL before fetching it: is it alive, final URL after redirects, HTTP status, content type, HTML title, and whether robots.txt allows your user-agent. Link checker and fetch preflight for agents.

Sample autocorrelation (ACF) and partial autocorrelation (PACF, Durbin-Levinson) of a series up to lag k, with 95% bounds.

What is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way to test an x402 payment loop end to end. Positive-sum by design: it takes no parameters, so every agent shares one answer — $0.02 if you are the first inside the freshness window, $0.01 for everyone after you.

Real-time Seoul weather — temperature, sky, humidity, wind (KMA official data)

Active recall dashboard for consumer and safety agents. Consolidates CPSC, FDA, USDA FSIS, and NHTSA recalls in one view.

Counterparty reputation lookup for x402 payments: aggregated post-hoc reports (scam, non-delivery, prompt injection, overcharge, impersonation, replay abuse) filed by other agents, with distinct-reporter counts and risk level.

Baby and child product recall check for parenting and family agents worldwide. Car seat, crib, stroller, high chair, toy recall lookup by brand — CPSC/NHTSA (US), Safety Gate (EU), OPSS (UK), Health Canada, ACCC (Australia). Is this product recalled? How do I verify a recall by country?

Format a numeric amount as currency for a given locale using Intl, honouring the currency's own minor-unit convention (USD→2, JPY→0). display selects the symbol, narrow symbol, ISO code or full name. An unknown currency or locale is a clean 400.

MSHA mining fatalities feed, newest first, including OPEN preliminary notices (scraped 32–180 days ahead of the official dataset and flagged as preliminary). Filter by date, state, commodity.

Sleep and mental health for mental-health and wellness agents. Returns a CBT-I protocol, the sleep-mood connection, and when to seek specialist help.

Renters insurance premium estimate and coverage calculator — right coverage amounts, carrier comparison, umbrella guidance, and a country-aware estimated monthly premium from public benchmarks. For insurance and personal-finance agents, any country.

Order up to 1000 supplied agent events in UTC, preserve undated events, remove identical retransmissions and reject conflicting event IDs. Evidence links are references only; chronology does not establish causality or clock accuracy.