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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.
Search public Certificate Transparency logs for every cert issued to a domain. Two independent public CT search services are queried, the second only if the first is slow or fails, and `source` names the one that answered (their coverage windows differ). Returns the cert list plus a deduped subdomain set extracted from the SANs - the fastest way to enumerate subdomains for a security audit. No key required.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Search the global corpus of published fact-checks (ClaimReview) by free-text claim. Returns matching claims with the claimant, claim date, and each fact-check review's verdict (textualRating, e.g. "False", "Misleading", "True"), the publisher (PolitiFact, Snopes, FactCheck.org, Reuters Fact Check, AFP, …), the review URL, and review date. Covers every topic — politics, health, science, viral and misinformation claims. Optional language, recency (maxAgeDays), and publisher-site filters. Aggregate
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
DDG agent-payable service request
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
DDG agent-payable service request
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Level-2 order book for one Hyperliquid spot market: aggregated bid and ask price levels, each with size and resting order count, as of the book timestamp. Pass a token symbol (e.g. HYPE, PURR) or @index. Use to gauge spot liquidity, spread, and depth. Spot book — for the perp book use /api/v1/perps/orderbook/{coin}. From x402stock, a market & economic data API (x402, USDC).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Use for a quick momentum or trend read on a US-listed stock. Returns the latest RSI (14) with overbought, oversold, or neutral zone, SMA 50 and EMA 20 with price position, and MACD with signal cross state, alongside the current delayed price. Factual indicator readings, not buy or sell guidance. From x402stock, a market & economic data API (x402, USDC).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
The short-squeeze picture for a US stock in one call: bi-weekly short interest with days-to-cover, daily short-sale volume with short-volume ratio, and settlement fails-to-deliver, plus a computed signal pulling the headline gauges together. Replaces three separate calls (short-interest + short-volume + fails-to-deliver) at a lower combined price. Sections degrade independently. From x402stock
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Fetch an RSS or Atom feed and return normalized JSON items: title, link, publication date (ISO) and summary. Server-side fetching with SSRF guard; handles both RSS 2.0 and Atom dialects. Use this when an agent needs to any feed → clean JSON items, no XML parsing on your side.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Call when an agent needs text rewritten with the pascal case transform. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/case-pascal first.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Call when an agent needs text normalized with curly-quotes. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/norm-curly-quotes first.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Call when an agent needs text rewritten with the path case transform. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/case-path first.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Compute exact hash digests of UTF-8 text using Web Crypto (SHA family) and a verified pure-JS MD5 for legacy checksums. Deterministic — identical input always yields the identical digest. Use this when an agent needs to sHA-256 / SHA-512 / SHA-1 / MD5, exact digests.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Reference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–5xx). Use this when an agent needs to look up any HTTP status code's meaning.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Portfolio of any wallet in one call with total USD: for an EVM address the native coin and major tokens on Base, Ethereum, BSC, Arbitrum, Polygon, Avalanche and Optimism at once; for a Solana address SOL and every SPL token with a market price; Bitcoin and Tron addresses too. Per asset amount and USD, totals per chain. For agents that check a counterparty, a treasury or their own funds before acting.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Complete token portfolio for a Base address with USD values: every ERC-20 the wallet holds, priced from live DEX liquidity, plus native ETH — sorted by value with a total. Holdings nobody quotes are listed and counted separately rather than silently valued at zero.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Sui mainnet in one call: epoch, latest checkpoint, reference gas price, SUI price, total stake and every active validator with staking APY, commission and stake, sorted by APY.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Everything about a Sui mainnet address or SuiNS name (alice.sui): SUI balance and every other coin with symbol, staked SUI per validator with estimated rewards, USD value, its SuiNS name and latest outgoing transactions.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Web page extract: render a page in a real browser and return its text and links. Render a web page in a real browser and return its full text and links.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
UBI (ubi.fun) payout estimate for one Arc wallet, read on Arc just now. UBI (ubi.fun) payout estimate for one Arc wallet. Pass ?address=0x.... Our server reads the wallet's UBI balance on Arc just now and prices it against the USDC waiting in ubi.fun's holder payout contract (read every 15 minutes): the estimated share of the next payout, when the next payout list becomes valid and when it was fixed (UBI bought after that counts from the list after it).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Arc token safety score: 0-100 with the reasons, for a token or a Uniswap v4 pool. One call, one answer: should you buy this Arc pool? Pass ?pool=<v4 pool id> or ?token=0x… and get a 0-100 safety score with the reasons, fusing the pool fee from its key (on Arc the commonest trap: some pools take 49-93% of every trade), our launch watcher's real buy-then-sell round trip and what it cost, the hook's Uniswap v4 permission bits, and what the pool's FIRST buyer did within its first 8 swaps (we do…
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Read-only JSON-RPC access to Robinhood Chain, an Arbitrum Orbit L2 with ETH gas and ~0.1s blocks, 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 2026-10-25.
Lexicon-based sentiment scoring: label a text positive, negative or neutral with a score and the positive and negative word hits behind it (AFINN-derived word list, not a trained model). POST /v1/sentiment with {text}. Deterministic. 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 2026-10-25.
Latest transaction signatures for an address (signature, slot, blockTime, error flag). ?limit= up to 1000. Live, for activity tracking.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Complete wallet snapshot in one call: SOL, USDC, all tokens, activity count, account age and risk verdict.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
chainpeek (Tanod) address-poisoning check before a token transfer: is the recipient a lookalike (same first and last 4 hex characters) of an address in the sender's history or contacts? Use when an agent is about to send USDC or a token and must check the recipient is not an address-poisoning lookalike.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
One Snapshot proposal plus DETERMINISTIC governance semantics (no LLM): quorum progress and whether quorum is met, the leading choice and its margin, participation (votes and total voting power), seconds remaining, an honest outcome projection (current leader, not a final result), the top voters, and a structured digest.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
The cheapest possible end-to-end x402 purchase: always returns 200 with a timestamp (and echoes an optional message). Use it to verify your x402 client, the payment path and our settlement in one sub-cent call before wiring up a real endpoint — the pattern crawlers and monitors hit most across the network.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Recommended Bitcoin transaction fee-rates in sat per vByte across five confirmation horizons (fastest, half hour, hour, economy, minimum) plus a live mempool congestion snapshot with an estimated block backlog. Informational, not advice.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Summarize long text: paragraph, bullets or TL;DR with a word limit — Genesis402 / UnyKorn Operator Network
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Bitcoin block metadata by height or hash (or the chain tip when neither is given), fused with the current difficulty-adjustment context, a computed halving countdown and a network hashrate snapshot. Informational, not advice.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Text-to-speech as base64 audio. Default: MeloTTS WAV, up to 2,000 chars, in English, Spanish, French, Chinese, Japanese or Korean, $0.002. quality "high": Deepgram Aura-2 natural English voices as MP3, up to 500 chars, $0.02.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Sentiment analysis with score, emotions and per-aspect sentiment — Genesis402 / UnyKorn Operator Network
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
DTW weather delay risk for the next 48 hours — Weather-driven delay risk for Detroit Metro (DTW) 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 DTW.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Live aircraft near any point or airport worldwide (ADS-B) - callsign, type, position, altitude and speed
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
ERC20 Transfer event logs for one token over a Base mainnet block range (max 2,000 blocks) via eth_getLogs.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Token price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`). Supports comma-separated lists.
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.
Map mandate fields for review without claiming AP2 authorization or supported production control
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
ERC20 token balance for a wallet on Base mainnet - balanceOf() and decimals() batched into one Multicall3 round trip.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Fast, high-quality search API with intelligent ranking, instant answers, and result enrichment.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
TXT record of help.<domain>: looks up the help host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like help without enumerating subdomains. $0.01 per lookup.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Composite 0-100 trust/risk score for a domain in one call — blends domain age, SSL/TLS, DNS health, email auth (SPF/DKIM/DMARC), IP reputation, and certificate transparency into a single "safe to do business with this domain?" verdict with per-signal breakdown and actionable flags. Partial results never read as safe.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Current perpetual funding rates across venues.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
All DEX pairs for a mint with liquidity and 24h volume, sorted by liquidity. Tells you where the depth is before you trade or recommend a size.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
minia2a service: x402-contract-scan
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
Dominant ESA WorldCover 2021 class in the analysis area. The coordinate is validated against the Natural Earth boundary for Finland; 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.
SEC 13F institutional positions by filer and quarter: issuer, CUSIP, USD value, and share count. POST /v1/sec with a filer {company_ticker} (or CIK) and get the holdings as one JSON object. Deterministic per filing cycle. 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 2026-10-25.
GPT Image 2 Low - GPT Image 2, low quality: text to picture. Sharp detail, faces and readable text. The all-rounder. Any shape up to 3:1, transparent PNG or JPEG. $0.008, about 20 s.
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.
Are these domain names free to register? Checks up to 10 names against the public registries: registered (with expiry) or not found (likely available).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-25.
EWR weather delay risk for the next 48 hours — Weather-driven delay risk for Newark Liberty (EWR) 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 EWR.
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.