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Signatures, press sheets and blank pages needed for a book of N pages at 4, 8, 16 or 32 pages per signature.

Sheet-metal bend allowance, outside setback, bend deduction and flat length from angle, radius, thickness and K-factor.

Exact age from a birth date: years, months, days, total days, weeks and hours, birth weekday and days to the next birthday.

Wax and fragrance oil weights for container candles from jar size, fill level, wax density and fragrance load.

BunnVault: Real-time Aave v3 USDC APY feed on Base Mainnet

Pay $0.01 USDC to make an outbound HTTP request through the proxy. Supports all standard HTTP methods, custom headers (including auth), and JSON or raw bodies. Responses are returned as text or base64-encoded binary. Max response size 10 MB, timeout 30s. Each request performs one upstream fetch and returns the final URL plus response metadata.

Smart Contract Audit — Security review of a single contract

Text Moderation language: Language identification (ISO 639-1 code, name, confidence) for one text or a batch of up to 50, with a script-based fallback.

Read one public URL and return clean bounded page content with a SHA-256 content hash.

Aquarium volume in US gallons and litres from inside dimensions, usable water after substrate, and the water's weight.

Watch one public page for 7 days. Checks hourly. When the content hash changes, POST {watch_id,url,old_fingerprint,new_fingerprint,changed_at} to your https callback (5s timeout, one retry). POST JSON {"url":"https://example.com","callback_url":"https://example.com/hook"}. Returns {watch_id,url,expires,status_url}. Free status is GET /v1/watch/:id and does not show the callback. At 500 active watc

Fetch current Amazon deals.

Correct likely spelling errors in an SEO query

Latest NDBC buoy observation: wind, gust, waves, swell, pressure and water temperature, with a Beaufort and sea-state screen.

Air changes per hour (ACH) from airflow and room volume, or the CFM needed for a target ACH.

Fetches kind 3 contact lists over up to twelve relays. Because kind 3 is replaceable, several relays regularly hold different versions; only the one with the highest created_at is used and the answer states which relays carried that version and how many older versions were seen, so a stale relay never quietly overwrites a current list. At depth 1 the answer is the account and its outgoing follows.

Lint a GitHub Actions workflow: actions not pinned to a commit SHA, missing or write-all permissions, pull_request_target with PR head checkout, script injection via event fields in run, secrets on the command line, curl|bash, self-hosted runners, deprecated set-output.

OyaPicks: recently resolved prediction markets and their winning outcome

SDK capabilities query ($0.01/request direct, or $0.003/request via Session Ticket at /v1/billing/tickets)

Return both the fully-expanded (eight 4-hex groups) and canonical compressed (RFC 5952) forms of an address. IPv4 is returned unchanged in both fields.

Recent earthquakes worldwide above a magnitude, newest or largest first, optional bounding box, with a match count.

The most recent quality snapshot for the repository. Returns 404 if no snapshot exists.

Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates

About page discovery repair plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.

Caffeine remaining after hours, and the time until it drops below a threshold, from a half-life you can set (default 5 hours).

Locus public pay-per-use API

Extract claims. Splits text into atomic, checkable claims with character spans, grounding_required, claim_type (number|date|quantity|quote|named_entity_fact|comparison|opinion|prediction|other) and check_worthiness (high|medium|low). Strips hedges, resolves pronouns across sentences, and splits compound sentences. $0.05 USDC.

Pay a tiny amount of USDC and receive one delightfully useless fact.

Find the best x402 endpoints for a task. Returns sellers ranked by proven demand (30-day unique payers, repeat calls per payer, scanner traffic filtered), price, and the cheapest proven alternative.

Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite