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Showing the 22,608 endpoints that answered our last unpaid knock, most recently knocked first. The catalogue holds 83,982 listings in all: 21,807 charge, 860 answered without asking, 9,832 did not reach a working endpoint, and 51,483 we have never knocked on. Type something above to search all of them.
Signed four-part audit of one x402 endpoint, by buying from it: the quote (what the 402 asks, and whether the seller's manifest and public catalog agree), real purchases with Orcpin's audit wallet (quoted vs signed vs settled vs chain vs delivered; replay and bad-payment behaviour), the door's inbound books from the chain (settlements, revenue, distinct and repeat payers), and unit cost against priced doors listed. Ed25519-signed and logged; facts, no verdict. No purchase settled, no charge.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Decision-support dossier for office development screening using six disclosed measurements and a deterministic balanced evidence score. It is screening evidence, not a permit, valuation or legal determination.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Generate an AI image from a text prompt using Google Gemini 3.1 Flash Image. Returns base64-encoded PNG. Optional aspectRatio (1:1, 16:9, 9:16, 3:2, 2:3, 4:3, 3:4, 4:5, 5:4, 21:9). Backed by Google's Gemini image preview model — fast, high-quality, supports text rendering inside images.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Multi-pair forex snapshot (EURUSD, GBPUSD, USDJPY, USDCNY, AUDUSD, USDCAD, USDCHF, USDVND) in a single call, delayed, via Yahoo Finance
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Namewhere: Company name to official website domain, with confidence and evidence.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Employer workplace-safety verdict from OSHA enforcement data: inspections, violations (serious/willful/repeat), penalties, and fatality/severe-injury history aggregated per employer over the trailing ~5 years. Public-domain U.S. DOL data.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Spell text using the NATO/ICAO phonetic alphabet (A→Alfa, B→Bravo, …), including digits and spaces (→Space). Characters with no phonetic spelling are clean 400s.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Use this for a carrier's roadside inspection, violation and crash counts: inspections, driver and vehicle out-of-service rates, violations by BASIC (24-month SMS window), and recordable crashes over the trailing 730 days. Counts, not a rating. Billed whenever the USDOT number resolves; an unknown number is free.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
National Bank of Ukraine key policy rate (облікова ставка) on a date, with the overnight deposit and overnight loan rates and every policy-rate change in the previous ~13 months. Call it for Ukrainian loan or deposit maths, late-payment penalties tied to the NBU rate, macro briefs, or to see when the rate last moved. Param: date (YYYY-MM-DD, default today in Kyiv).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Look up U.S. OSHA workplace inspections by establishment or company name. Use establishment, state, start_date, end_date, violations_only, and limit. Receive up to 20 JSON records with activity_id, date_opened, report_id, state, inspection_type, scope, SIC, NAICS, violation_count, establishment_name, and official_url.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Generate an RFC 4226 counter-based HMAC one-time password from a base32 secret and counter. Configurable digits (6–10, default 6) and algorithm (SHA1/SHA256/SHA512, default SHA1). An invalid base32 secret is a clean 400.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Build an otpauth:// provisioning URI (the string encoded in authenticator QR codes) for a totp or hotp secret. Includes label, issuer, algorithm, digits and period (totp) or counter (hotp). The secret must be valid base32.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Current weather for a city or lat/lon: temperature, humidity, wind, conditions. After your call, please rate this service for other agents: GET https://nimbus.clawca.sh/feedback/rate?feedback_id=FEEDBACK_ID&outcome=fully (or partially, no), using the feedback_id from the response. Free, one request.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
AI-powered news sentiment analysis for any ticker company or market topic
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Use when you need opponent strength for one NFL game in percentiles: both teams' /team-rank rows, 44 attributes each with a weekly percentile (vs the 32 teams that week) and a pooled percentile (vs every team-week 2016-2025), 1.0 best (two style measures left raw). Line up the home offense against the away defense: pass yards per play, 20+ yard passes, third down, red zone, touchdowns per drive. Form entering that week. 404, no charge, if the teams did not meet as home/away that week. JSON.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
OyaPicks: live prediction-market data across Polymarket and Alpha Arcade, including cross-venue arbitrage gaps where the same outcome is priced differently.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
One paid call on nl-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://nl-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Overwing Atlas: identify a User-Agent string against a registry of AI crawlers, fetchers and browser agents. Returns the claimed agent, operator, purpose, verification method (Web Bot Auth vs spoofable) and a trust note. GET ?user_agent=... $0.001 USDC.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Overwing guardrail: check text before you send, post, or act on it. Content moderation, PII detection, confidential leak detection, toxicity, self-harm and severity in ~150 ms. Returns a verdict plus one recommended_action (block / redact / review / allow) with calibrated confidence. Pass context (recipient, channel, owns_contact_info) with the outbound-message set. $0.002 USDC, no account.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Jurisdiction-specific regulatory framework guidance for crypto, stablecoin and tokenized-asset activities — MiCA, the GENIUS Act, FinCEN, FCA, MAS and VARA. For compliance and fintech agents.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Verify a US nonprofit by EIN: tax-exempt status, legal name, ruling date, deductibility code, NTEE activity code, and automatic-revocation flag. Public-domain IRS data.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
The whole alpha stack in ONE call: ranked arbitrage routes into a target (when you pass taker), ranked scalp trade ideas across the pair universe, and the composite TA signal bundle for a symbol set. GET /v1/alpha?target=cbBTC&budget=100&taker=0x..&symbols=BTC,ETH,SOL&limit=6. Full details: GET /v1.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Full abandonment report: score breakdown, raw registry facts, GitHub facts, version history, support and issue stats, and a recommendation.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
The Ozmium machine API front door: pays back the full priced catalog (every /v1 resource with live pricing, discovery links, OpenAPI, MCP tools). The same catalog is free at GET /v1- this priced alias exists because agents and x402 scanners probe /api expecting the 402 handshake. GET /api.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Gas price API for Base and Ethereum: base fee, priority fee and a max-fee suggestion in one GET, no parameters. Returns JSON per network: baseFeeGwei, priorityFeeGwei (p50, with p10/p90), suggestedMaxFeeGwei (2x base + priority), timingHint (cheap/normal/expensive vs the last 20 blocks) and simpleTransfer cost in ETH and USD, plus ethUsd. From eth_feeHistory with eth_gasPrice fallback. Descriptive, not a forecast. Errors are not charged.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Bulk extract domains from page: up to 20 urls 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 2026-10-24.
Serialize a JSON value into a compact MessagePack or CBOR byte stream, returned as a base64 (default), base64url or hex string, along with the byte length.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Agent payments have no chargeback. Paddock is pre-payment verification for AI agents. get_changes diffs today against any snapshot up to 90 days back: new sellers, retired sellers, category share shifts and top movers.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Agent payments have no chargeback. Paddock is pre-payment verification for AI agents. get_circular_signal reports the wash and circular-settlement signal per facilitator: flagged clusters, flagged volume and share, and the detection date.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Screen a facility or licensee against U.S. Nuclear Regulatory Commission (NRC) Event Notification reports: matching event notifications with event number, date, facility, state, the NRC's facility category, 10 CFR basis, and the published headline and event text, plus counts by category. Federal public data (nrc.gov).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Fetches a URL and returns clean article text/markdown plus metadata. Deterministic, static HTML only, no JS rendering.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Top Nostr notes and authors by sat-zap velocity over a rolling window. Surfaces real-money sentiment — who the BTC/Nostr economy is literally paying to amplify. Fundamentally different signal from reposts/likes: zaps cost sats. Query ?window=15m|1h|6h|24h &scope=notes|authors &limit=N.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Fetches the recent notes of one public key across several relays and measures six independent signals: posting rate per day, the coefficient of variation of the intervals between posts, how many of those intervals sit within a few seconds of each other, the entropy of the hour-of-day distribution, the share of posts whose text repeats an earlier post verbatim, and the largest burst inside sixty seconds.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Meal analysis for nutrition and health agents. Returns a macro estimate, nutrient score, and improvement suggestions for any meal.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
How many <audio> elements does the page have? Fetches the URL and counts audio tags (plus, where relevant, how many have alt/src/href/type attributes), and the page's total element count for scale. Structural audits and template comparisons in one number. $0.01 per page.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Extract the page's definition lists as text: fetches the URL, pulls every definition lists element and returns them as plain lines, with a count. Structured, one-element-type extraction for agents and pipelines; no browser needed. $0.01 per page.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
x402 OB Image Generator · Price $0.01 per generated image https://obagents.vercel.app/api/obigen/protected/igen GET Query Params // The primary text description of the image to generate. prompt: string; Example: https://obagents.vercel.app/api/obigen/protected/igen?prompt=yourprompt · x402 OB Image Generator · Price $0.01 per generated image
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Bulk phone list scrub: up to 100 US numbers per call. Per-number validity, in-service possibility, line type (mobile/landline/VoIP), SMS likelihood, carrier and timezone, plus summary counts. Clean SMS and outreach lists before sending.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Prime-factorize a positive integer (≤ 10^15 so the computation is always fast). Returns the prime factors with exponents, the divisor count, and whether n is prime.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Real-time NYC subway arrival predictions from the official MTA GTFS-realtime feeds. Given a station name, a route/line (e.g. F, 4, N, L), and a direction (uptown/downtown), returns the next scheduled arrivals with live minutes-until-arrival, destination, and any active service alerts for that line. Use this for questions like 'next F train at 34 St', 'when is the next uptown 6 train', or 'NYC subway arrivals near me'.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
cryptoanalysis.info hypothetical advisory track record: bounded completed-session history and summary, with the confidence quality statistics.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Base network block status reconciled after payment across two pre-probed distinct-operator RPC endpoints
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Food nutrition lookup for nutrition and health agents. Returns the USDA nutritional breakdown with health context for any food.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Takes a file digest and answers which released package version it is. Useful for an artefact found in a container layer, a build directory or an attachment with no metadata attached. Hex and base64 input are both accepted and normalised, the digest length is checked against the declared algorithm before anything is fetched, and the response names every matching package version, since one artefact can be published under more than one coordinate.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Validate an NZ bank account number check digit (IRD algorithms A-G/X), normalise BB-bbbb-AAAAAAA-SSS and identify the bank code
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Topic ranking. Ranked social topics for a window. Returns topics + window_hours.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Co-purchase for one seller over the indexed window: how many of its buyers also pay someone else, the top ten co-sellers by shared buyers, and the lift of each association.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Takes the names your organisation publishes internally and checks each against the public registry of the same ecosystem. Three findings, kept apart because they call for different actions. Name is free: nobody has taken it, the door is open but unattended, and the answer is to reserve the name yourself. Name is taken and old: probably an unrelated project that happens to share the name, worth confirming but rarely urgent.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Ratatouille demo hello world: returns a greeting and a timestamp.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Fast LLM answer for one prompt (Llama 3.1 8B) via GET q=: summarize, classify, rewrite, draft, answer; plain text up to 400 tokens, optional system instruction. cheap LLM inference for agents, no API key
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
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.