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Showing the 19,441 endpoints that answered our last unpaid knock, most recently knocked first. The catalogue holds 76,774 listings in all: 18,846 charge, 652 answered without asking, 8,901 did not reach a working endpoint, and 48,375 we have never knocked on. Type something above to search all of them.
Live price, market cap, 24h volume and 24h change for ERC-20 / SPL / other chain tokens looked up by CONTRACT ADDRESS on a named platform (ethereum, base, polygon-pos, arbitrum-one, optimistic-ethereum, binance-smart-chain, solana, avalanche, ...). Up to 25 contracts per call, any vs currency (default usd). The address-first sibling of crypto-price: use it when an agent holds a token address from a wallet, a DEX pair or a contract scan and has no coin id.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Free public-domain books on "Ireland": browse the catalogue's works tagged with that Library of Congress subject (405 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Convert roof pitch (rise per 12), angle or percent slope; get the rafter length multiplier and roof area factor.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Gambler's ruin: probability of going broke before hitting a target, and expected number of bets, for repeated unit bets.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Most-recorded species within a radius of a location (birds, mammals, plants and more), with observation counts.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
An economic or social indicator for a country over 3-40 years: values, change, average and trend direction.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Solve Ax=b (n up to 10) by Gaussian elimination with partial pivoting; flags singular and ill-conditioned systems.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Cartons per pallet layer and per pallet within a height limit: GMA 48x40, Euro 120x80 or ISO, with weight check.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Machine-readable description 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.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Person entity 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.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Enforce exact declared owner, subject, revision and allowed scope labels; a matching label grants no permission or access for public nonpersonal agent credential declarations. No DID resolution, live revocation lookup, signature verification, person identification, key custody or identity certification. Offline typed nonpersonal metadata only. Result retention: 24 hours; minimal receipt metadata: 90 days.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
One specific fact for one country: VAT/GST rate, public holidays by country, visa requirements for travelers, tipping customs, cryptocurrency legal status by country, stablecoin regulation and capital controls, power plug type, minimum wage, corporate tax, digital nomad visa, customs duty-free allowance and more. 195 countries, 58 fields, verified sources. Example: /api/v1/country/JP/vat
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Body fat percentage estimate from tape measurements (US Navy method) with fat mass, lean mass and a general category.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Look up the visa requirement for a traveler with a given passport visiting a destination country. Pass passport and destination as ISO-3166 alpha-3, alpha-2, or country name (e.g. passport=USA destination=Japan). Returns the requirement category — 'visa free' (with visaFreeDays, the allowed days), 'visa on arrival', 'e-visa', 'eta' (electronic travel authorization), 'visa required' (must arrange in advance), or 'no admission' — plus a plain-language description and the resolved passport/destinat
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Prüft am Objekt url-regel den Befund HTTP-Status der Sitemap.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Solve linear equations Ax = b (up to 6 unknowns): unique, none or infinite solutions, with rank and determinant.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Pretty-print or minify JSON, optionally sorting keys, and report the size before and after.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Ficus (Adaptability) — Study of flexibility and error tolerance for resilient iteration.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Total and average unit price for a quantity under graduated or volume tiers given as minQty:unitPrice pairs.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Classify an SPDX license expression such as MIT OR Apache-2.0: permissive, copyleft or restricted, with the effective result.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
GPTBot access decision 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.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Data Vintage Revision Risk. Evaluates the quality, disagreement, transmission, composition or verification of Edge intelligence itself. Purpose: Increase the defensibility of downstream decisions by making evidence quality and model limitations machine-readable. 5-minute freshness target; missing evidence is reported explicitly rather than invented.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Read-only access to Osmosis mainnet, the Cosmos liquidity hub: the CometBFT RPC (as JSON-RPC or GET routes such as /status and /block) and the Cosmos SDK LCD (GET /cosmos/... and the chain's own modules). Served by the Pocket Network decentralised supplier set. Pay per request in USDC; no account, no API key.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
US monthly equity option expirations for a year: third Friday, moved to Thursday on a market holiday; flags triple witching.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Two open and closed bivalve shells lie among small pebbles and sand on a beach. The shells show purple and white interiors against a...
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Convert a Gregorian date to the Hebrew calendar (or back) with leap year, year type and major holiday dates.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
EVM Allowance Budget Check: EVM Allowance Budget Check checks caller-supplied allowance against a required token amount from bounded caller-supplied values without an external provider. Call EVM Allowance Budget Check before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Allowance Budget Check as versioned deterministic…
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Deep immune check for one Arc token: four readings in one call, fused into one grade. EXIT: a real buy-then-sell round trip simulated on Arc (nothing spent), the pool fee, a dynamic-fee hook, and whether a plain wallet can pull the liquidity. CLUSTER: was the launch bundled (the launcher and wallets it funded buying in the first two minutes, with their share of supply). HOLDERS: every Transfer since the first mint replayed into balances, top-10 wallets and what the creator still holds.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
US M2 money stock, monthly, in billions of dollars (seasonally adjusted), with the latest value, prior month, month-over-month and year-over-year change, and recent history. No ticker needed. A liquidity gauge watched for inflation and risk-asset context. Sourced from the St. Louis Fed (FRED). From x402stock, a pay-per-call market & economic data API. Pay per request in USDC via x402, no API key.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Limiting reagent, theoretical yield and leftover excess for a balanced reaction from reactant masses; optional percent yield.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Recent earthquakes worldwide above a magnitude, newest or largest first, optional bounding box, with a match count.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Reliability intelligence for any US-market vehicle: every consumer defect complaint on file for a year/make/model (or VIN) aggregated into a ranked top-failure-components report — complaint counts and percentage share per component, plus crash, fire, injury, and death totals. One call answers 'what actually breaks on this car?' For buy/avoid decisions, warranty pricing, and inspection checklists. Response includes affiliate offers for full VIN history reports.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Standard US trade book trim sizes in inches and mm, or look up one size like 6x9 and its closest standard.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Text statistics for English: words, sentences, reading time and Flesch reading ease with a difficulty verdict.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Rail fence (zigzag) transposition cipher encode or decode with 2 to 20 rails; letters and digits only by default.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Call when an agent needs the ERC-721 token ids one wallet owns in a Base collection, via tokenOfOwnerByIndex when enumerable (at most 100). Unsupported enumeration errors and is not billed. No log scan. Send JSON {"contract":"0x1111111111111111111111111111111111111111","owner":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-erc721-tokens first.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Daylight saving transitions of an IANA time zone in a year: exact UTC instants, offsets before and after, and the clock change.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Scrabble score for a word with standard English tile values, letter and word multipliers, blanks and the 50-point bingo.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
ISO 4217 currency details by code, number or name: minor units, issuers, countries; optional exact rounding of an amount.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Equity-curve summary of a price or return series you supply: CAGR, volatility, Sharpe, drawdown, best and worst period.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Romania; results outside it are rejected before payment.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Positioning for SOL and BTC perps on Hyperliquid: open interest with its 1h and 24h change, and the net-long share of the top 250 Hyperliquid accounts. Use when you need to answer: How is the market positioned on SOL and BTC? For any other Hyperliquid perp use /api/open-interest.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
X1 chain health: epoch, slot, TPS, validator count + delinquency, total/activated stake, supply. Sources api.x1.xyz cluster.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Free public-domain books on "Literature": browse the catalogue's works tagged with that Library of Congress subject (358 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Look up a US state or territory by name, postal abbreviation or FIPS code: all three, region, division and capital.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Read a PNG's width, height, bit depth, colour type and interlace from its first 33 bytes, and verify the IHDR CRC.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Return on investment and compound annual growth rate (CAGR) from a start value, end value and years held.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Water heater recovery rate (gallons an hour), tank heat-up time and energy cost from input power, efficiency and rise.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
Turn seconds into a readable duration (2 h 5 min) or parse one like '1d 3h 20m' back into seconds, minutes and hours.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-21.
The description and the price are the SELLER’S, copied from their listing and not checked by us. The badge is OURS and is one unpaid handshake: “answered unpaid” means it answered us once without asking for payment, which is not a standing offer, and an unpriced listing is unpriced rather than free.
Knocking goes to the knock page, which reads the terms live before anything is signed. A listing can be out of date in both directions, which is the reason to knock rather than to read a row.