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Showing the 24,115 endpoints that answered our last unpaid knock, most recently knocked first. The catalogue holds 93,469 listings in all: 23,277 charge, 899 answered without asking, 10,382 did not reach a working endpoint, and 58,911 we have never knocked on. Type something above to search all of them.
chainpeek (Tanod) ERC-20 transfer history of an address on Ethereum or Base: tokens, symbols, amounts and direction, newest first. Use when an agent needs the recent ERC-20 token transfers into and out of a wallet address, with symbols and amounts.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Netherlands; results outside it are rejected before payment.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
x402engine — DeepSeek's reasoning model — chain-of-thought reasoning competitive with o3 at fraction of cost
The price is the seller’s own listing. it answered us without asking for payment, once, on the day we knocked, on 2026-10-25.
Purpose-bound hCaptcha observation (security) using the existing fresh Stack-Monitor. Returns stack_hcaptcha_decision, direct versus inferred status, evidence, optional version difference against a caller-owned baseline and reusable snapshot. Missing fingerprints do not prove absence. No background scheduling, CVE, compatibility or installed-extension inventory. Existing outbound safeguards remain in the injected motor. One public HTTPS root domain, up to150 baseline technologies; 9s timeout.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Check username availability across 7 platforms: GitHub, YouTube, TikTok, Reddit, Pinterest, npm, PyPI.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
TLS check on port 443: negotiated protocol and cipher, certificate subject, issuer, validity dates, days left, SANs, chain trust, hostname match, legacy TLS 1.0/1.1 acceptance, with flags for expiry < 21 days and TLS < 1.2.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Bulk email verification: up to 200 addresses per call. Syntax, domain and MX records, disposable-domain and role-account detection, catch-all hints and a valid / risky / invalid verdict for each, plus a summary.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
x402 sellers grouped by origin (domain): how many APIs each lists, its best API's payers, its calls in 30 days and its median price.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
A close view of a textured conifer trunk in a dense evergreen forest with dappled sunlight on the forest floor.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Find who deployed a contract and in which transaction on Ethereum mainnet - lets agents verify a contract's deployer and origin before trusting it, provenance data LLMs cannot look up. contract creator, who deployed, contract deployer, deployment tx, contract origin, contract provenance Accepts payment on Base or Solana — either network works.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Count a text's tokens and estimate the cost of one call on popular LLMs (or the models you list), input plus an expected number of output tokens, and whether it fits each context window.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Convert feet per second to knots for speed. SI/international definitions; IEEE-754 numeric precision. This is a specialised route of the speed converter, not a separate data provider.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Who is behind a Base wallet, one call - send any 0x address, get JSON: kind (wallet/contract, token, proxy), Basename, first_seen_at + age_days, tx_count, ETH + USDC balance, first_funder (amount, when, funder age + flags), tokens_deployed, phishing/mixer/sanction/scam flags, activity label, and a trusted/normal/caution/high_risk verdict with a 0-100 trust_score, red_flags, green_flags and the rule that set it. ?address=0x... 404 free if unused. Free sample: /wallet/verdict/example.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Native POL balance of a Polygon PoS wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Polygon PoS.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
OFR Short-term Funding Monitor daily series from the US Office of Financial Research, for one mnemonic (default FNYR-SOFR-A, the SOFR rate in percent): the latest N observations.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Mean SoilGrids pH in H2O for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Netherlands; results outside it are rejected before payment.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
List podcasts for a publisher. Returns a paginated list of podcasts attributed to a publisher, ordered by popularity.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Public wallet profile signals that help agents reason about payment delegation and visible activity.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Live weather for any city or lat/lon on Earth: WMO-decoded current conditions, next 24h hourly and 7-day daily forecast with precipitation probability, sunrise/sunset and wind — from Open-Meteo's fused national-model...
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Czechia; results outside it are rejected before payment.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Official monthly permit, 311, and code-violation counts and year-over-year change for a neighborhood, ZIP, city, or county. Each series cites its dataset. Coverage follows the source-card registry and lane availability; unsupported or thin places get a charge-free diagnostic. npx @velinussage/locus-agent-skill add.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Xynaptic Energy Interconnections FR — live French cross-border power flows (RTE official): England, Italy, Germany-Belgium, Switzerland, Spain. GET ?date=YYYY-MM-DD.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Xynaptic Energy Opportunity — the premium signal: cheapest consumption windows in the next 24h, renewable surplus detection, expected savings. Tells an agent WHEN to act: charge EV now or in 2h, run the dishwasher at 14:00. The decision product of the energy vertical.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Foods in USDA FoodData Central matching a name, each with its FDC id, serving size and calories, protein, fat and carbohydrate.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Premium evidence-gated Bitcoin scarcity framework combining eligible ETF absorption, market activity, macro liquidity and derivatives context while explicitly withholding exchange-supply, holder and miner factors that lack approved evidence. Purpose: Measure supported Bitcoin scarcity pressure without fabricating exchange balances, holder conviction, whale distribution or miner inventory data. 15-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 2026-10-25.
Track a flight or aircraft by callsign, ICAO hex or registration - live position, type, owner and route
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Convert between APR and APY at any compounding frequency — Genesis402 / UnyKorn Operator Network
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Email deliverability & domain security check — validates SPF, DKIM (multi-selector), and DMARC, detects spoofing and misconfigurations, and returns an A–F email security grade with transparent deductions. Anti-spam / anti-phishing readiness for any sending domain.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Periodic transaction report tracker for the US House: each entry is one filing event — member, district, date, document id, PDF link — so an agent can poll for fresh trade disclosures and fetch parsed rows from the companion trades endpoint. Covers all filing types with a code legend in every response.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Largest gainers and losers over a window, with volume context.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Historical ECB euro reference exchange rate for any date since 1999 and conversion between any two published currencies.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Change watch for mail provider detect: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when mail provider detection for a domain changes. $0.01 per check.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Assemble verified failure evidence and recommend review without executing refunds
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Country by ISO code. 🆓 5 free trial calls per signed wallet
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Bulk is email hosted by fastmail: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
The latest releases of a GitHub repository: tag, name, date, pre-release flag, the first 1,500 characters of the notes, and the number of assets. Needs the GITHUB_TOKEN secret on the deployment; without it the call answers 503 and is not charged.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Heuristic authenticity signals based on public payment graph observations and caller-provided context.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
SEO and sharing metadata of one web page, read from its HTML without JavaScript: final URL and status, title and description with their lengths, canonical, robots meta, lang, hreflang, Open Graph and Twitter card tags, JSON-LD types and objects, favicon, heading outline, word count, and an issues list of plain sentences. robots.txt is respected.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
European company profile by country and national ID, one JSON schema (identity, legal form, status, seat, VAT, LEI, register link, groupe_lei: GLEIF level-2 group). Registers from local copies: Belgium (KBO, NACEBEL + establishments), Croatia, Cyprus, Estonia, Ireland, Latvia, Lithuania, Norway, Romania, Sweden; live: Czechia, Finland, Poland, Slovakia, Switzerland; DK, UK if enabled; elsewhere via GLEIF (a natural-person or ambiguous-form LEI: 404, not billed), under the LEI's own country.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Reverse-enrich an email address into a full person profile via ContactOut: name, current title/company, LinkedIn URL, work history. Pass `email` (work or personal). Use it to identify an inbound signup or reply before responding. Complements contactout/linkedin-contacts (which goes the other direction).
The price is the seller’s own listing. it answered us without asking for payment, once, on the day we knocked, on 2026-10-25.
Stablecoin circulating supply ranking (385+ stablecoins): USDT, USDC, DAI, etc. with peg type, mechanism, multi-chain breakdown (DeFiLlama).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
EU financial authorisations in five official registers, by name or LEI: ESMA Registers (MiFID entities, EU/EEA: status, authority, dates), the ECB list of supervised entities (banking union: significant banks under direct ECB supervision, less significant under national authorities, group, monthly changes), ESMA benchmark administrators and money market funds (fund, manager, status), EIOPA pension institutions (IORP). One integration for the single market; data free at the sources.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
FLL weather delay risk for the next 48 hours — Weather-driven delay risk for Fort Lauderdale-Hollywood (FLL) over the next 48 hours: 6-hour risk scores from forecast wind gusts, convective potential, winter and sustained precipitation, and heavy cloud cover at the field. Same shape as the generic delay-risk endpoint, bound to FLL.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Pick random items without replacement for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Live motorsport analysis across F1, NASCAR, IndyCar and MotoGP: standings, strategy, lap times and race data.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Translate text between about 100 languages (M2M-100). One text or a batch of up to 20; give target_lang and optionally source_lang (default en). Priced by size: $0.004 + $0.0007 per 1,000 characters. Also callable as GET with the same fields as query parameters.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
The latest block number on Ethereum, Base, Polygon, Arbitrum or Optimism from keyless public nodes with fallback. Use it as the cheapest possible on-chain read: a liveness check for a chain, a timestamp anchor for a query, or the first paid call to prove an x402 client works end to end.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Batch token risk scan: up to 5 tokens in one call, any mix of Base, Ethereum, Polygon, Arbitrum, Optimism and Solana. Each gets a risk rating, red flags, price and liquidity; the riskiest one is named. For screening a watchlist, a wallet's holdings or a list of new launches.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Company 360 — a US public company's SEC picture in one call by ticker. Merges three SEC sources: recent filings (10-K/10-Q/8-K and all form types, with links), curated XBRL fundamentals (revenue, net income, EPS, assets, etc. — annual + quarterly series), and recent insider transactions (Form 4 buys/sells by officers & directors). Each section reports found/error independently. Equity research, due diligence, monitoring. Pass ticker (required); optional formType filters the filings section, limi
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Modern WHOIS via RDAP. Query: domain (e.g. example.com). Returns { domain, ldhName, handle, registrar:{ name, ianaId, url, abuseEmail, abusePhone }, registeredAt, expiresAt, updatedAt, statuses (camelCase ICANN EPP codes), nameservers[], dnssecSigned, rdapUrl }. GDPR: registrant personal data is generally redacted upstream and not returned. Some TLDs without RDAP are not supported and return 404 TLD_NOT_SUPPORTED.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
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.