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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.
Curated reading list on QE for tutoring agents, quiz generators, and reading apps — 168 public-domain books (e.g. A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones, Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings). Full-text retrieval with drill-down routes for chapters, quotes, and citations. No license, no API key required.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Send a picture, either as a public web address or as base64-encoded image data, and get back the plain text found inside it.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Recall tenant memory
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Kids activity and extracurricular finder for parenting and family agents worldwide. Age-appropriate sports, arts, STEM, and outdoor programs by interest, budget, and location, with developmental benefits and overcommitment guidance. What activities should my child do at this age?
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Positive discipline and toddler tantrum guide for parenting and family agents worldwide. Age-appropriate behavioral strategies, in-the-moment scripts, natural consequences, and what is developmentally normal. Why does my child do this? What should I say/do right now?
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Current prices for cryptocurrencies and tokens by symbol (btc, eth, sol, usdc, ...), CoinGecko slug, or on-chain token address on Base, Ethereum, Arbitrum, Solana and 100+ chains, using DeFiLlama's aggregated DEX/CEX pricing with a per-asset confidence score. Quote in USD or any ECB fiat currency. Up to 25 assets per call. $0.002 per call.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Generate a secure random password (characters) or a wordlist passphrase.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Full OI report — all assets, all exchanges, 5-min delta
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Assignee patent portfolio / company patent landscape analysis for any company, university, or organization. Returns USPTO portfolio size, filing-year trends, top CPC technology focus areas, sample recent patents, and global IP strategy intelligence for the named assignee. For IP, R&D-strategy, and competitive-intelligence agents. Worldwide.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
ERC-20 name, symbol, decimals and total supply read from the contract itself, and confirmation the address has code on that chain.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
BEFORE YOU PAY an x402 402: ping this resource URL. Returns live or dead (ghost listing, timeout, non-compliant host). One cent. Use when holding Payment-Required, before sending USDC to a payTo. Ghost x402, is this endpoint live, verify before pay. Not full pay-clearance.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
BEFORE YOU PAY Messari ($0.10–$0.25+): SKIP_MESSARI (use cheaper Pathmint/Signals), PAY_MESSARI (exact official endpoint + price), or ABORT (spoof/ghost). Two cents. Not Messari data — a gate in front of it.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Agent Wallpaper — Golden Godrays ($0.05 USDC on Base, Polygon, Arbitrum, or Avalanche via x402). Machine purchase: one cosmic wallpaper JPG (16:9). Download URL returned in the settlement response, instantly. For agent use. Music made with Suno — disclosed. Automatic fulfillment after settlement. Pay to 0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Audits the JSON-LD structured data on one public web page: P1 for no schema or missing required properties, P2 for a low rich-result score, each with the properties to add. Call it when a page is missing rich results in Google or before publishing a page that should earn them. Input: url. Returns in seconds. Errors: 400 invalid input, 502 audit failed, 504 timed out. You are not charged for an error response.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Access to protected resource
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Pay once for virtual admission to Agentic Commerce Demo Day
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Address-poisoning check before you send USDC on Base. Body {from, to} (or sender/recipient; chain=base, token=USDC only, others 400 not charged; optional contacts/known_addresses): scans the sender's recent Base USDC transfers for lookalikes (same first/last 4 hex) plus dust/zero-value transfers. No sender? {recipient, known_addresses} = offline contacts check; {address} alone scans its own history for poisoning signs. Returns risk low/medium/high, lookalikes, reasons, coverage.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Exchange netflow. Daily exchange in/out flow with per-chain coverage stated beside it.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
SnowSignals phase updates — pay-per-row market-phase reading
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
SnowSignals phase boundary — pay-per-row market-phase reading
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
List Google Play Store app categories.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built for x402 agents that need on-chain facts without managing RPC keys or node infrastructure. Each call returns a deterministic JSON payload with a chain-specific block number at snapshot time so results can be independently verified against a public RPC or block explorer.
The price is the seller’s own listing. it answered us without asking for payment, once, on the day we knocked, on 2026-10-24.
Payment verification for x402: verify a USDC transaction on Base — did this payment really settle, and did it pay the right address the right amount? Send a tx hash (or x402 authorization): confirmations, real-USDC transfer check, expectedPayTo/expectedAmount match, fake-USDC and lookalike-address warnings, who funded the payer (external, self_funded, unknown), plain-English summary and a receipt. Body {txHash|authorization, expectedPayTo?, expectedAmount?}. Free demo: POST /demo.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Audit an agent-facing service for machine usability. Actually calls the endpoints: MCP (Streamable HTTP initialize + tools/list, schema checks), A2A agent card, x402 payment challenge, llms.txt, OpenAPI, robots/agents metadata and endpoint health. Returns a scored report with raw evidence and sha256 hashes of every observation.
The price is the seller’s own listing. it answered us without asking for payment, once, on the day we knocked, on 2026-10-24.
Full stored detail for a single SEC EDGAR merger / acquisition agreements filing by accession number (entityId like 'edgar:0000320193-26-000064') — company name, CIK, form type, filing date, and a direct link to the filing index.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Focused honeypot check: a live buy-then-sell simulation against real DEX liquidity (Aerodrome, Uniswap V2/V3/V4). Tells an agent whether the token can actually be SOLD, the round-trip loss percent, and whether GoPlus or honeypot.is flag it too. Catches sell-blocking scam tokens, extreme sell taxes and no-liquidity traps before a buy is placed.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Verified on-chain USDC revenue stats for any x402 seller address on Base: total received, transfer count, unique payers, top-payer concentration, largest transfers. Window up to 720h (30d), incremental coverage.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
ETH and USDC balance of any address on Base, read live from the chain (eth_getBalance + USDC balanceOf) at request time. Pass ?address=0x... . Returns raw and decimal values plus the block number the read was made at. No third-party API, no cache.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Orbitwren: Orbital data centers and space AI compute tracker: every orbital data center project (company, hardware, launch, status, sources), launches, orbits, changes and alerts.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Tickers with a fresh bullish news catalyst, from an AI news scanner feeding a live trading system (refreshed ~15min during US market hours; staleness reported honestly). JSON.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Macro dashboard in one call: 13w/5y/10y/30y Treasury yields, dollar index, gold, WTI crude, VIX. JSON.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
ERC-8004 on-chain agent identity + aggregated feedback (Ethereum or BSC).
Unpriced in the listing, which is not the same as free. it demanded payment when we knocked, on 2026-10-24.
Screens a wallet address against OFAC's published SDN sanctions list (direct match only, Ethereum or Solana).
Unpriced in the listing, which is not the same as free. it demanded payment when we knocked, on 2026-10-24.
Composite trust and safety check for a domain: domain-to-IP resolution, multi-region website verification (screenshots plus Core Web Vitals via UpRock Verify), and IP intelligence (geolocation plus proxy/VPN detection) rolled into a single 0-100 trust score and verdict. Built for trust and safety, compliance, brand protection, anti-fraud, and monitoring whether a site is live, performant, and hosted where it claims to be.
Unpriced in the listing, which is not the same as free. it demanded payment when we knocked, on 2026-10-24.
DeFi position and wallet risk snapshot on Base: token balances, account flags, and live Aave v3 collateral, debt, borrowing power, and health factor read directly from the protocol at a specific block, plus derived risk metrics — net equity, LTV utilization, leverage multiplier, health-factor band, and collateral drawdown tolerance (how far collateral can fall before liquidation). For agents assessing portfolio exposure and liquidation risk.
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 6238 time-based one-time password from a base32 secret. Uses the current time by default, or an explicit unix timestamp (seconds); configurable period (default 30s), digits (default 6) and algorithm (default SHA1). Also returns the counter and seconds remaining in the window.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Access to The Little Secret
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Ranked, fee-netted arbitrage routes into a target token on Base. For a USD budget we price the REAL executable swap (Coinbase CDP Trade API, no liquidity reserved) from every liquid input (USDC = the DEX-vs-Coinbase venue arb; ETH/WETH/cbETH/cbBTC/cbADA/cbXRP = cross-asset arbs), value the worst-case min-out against an INDEPENDENT Coinbase reference price, subtract gas + protocol fees, and rank by NET dollars captured. Full details: GET /v1.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Deterministic remediation risk gate. Pass actor, sector, region, planned_action (e.g. block_ip, halt_pipeline, disable_account). Returns auto_approve/human_review/reject via capability x opportunity x intent scoring (same as /ot/threat-score) — no LLM in the loop. auto_approve requires vendor_stack; omitting it caps the verdict at human_review regardless of score. Optional asset_context escalates to human_review on shared cloud/CDN infra (e.g. shared_infra:cloudflare).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
ICS threat actors by sector. Pass ?sector=energy. Returns all groups targeting that sector from live MITRE ATT&CK ICS STIX data. Covers energy, water, manufacturing, oil-and-gas, chemical, transportation, nuclear.
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.
Bazaar Ping (discovery test) ($0.05 USDC on Base, Polygon, Arbitrum, or Avalanche via x402). Discovery test purchase. One cosmic wallpaper JPG (16:9), instant download. Music made with Suno — disclosed. Automatic fulfillment after settlement. Pay to 0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Exit capacity for one Kamino reserve: oracle-marked USD vs the maximum a liquidator could realise selling now, the exitable fraction, and the verdict with its corroboration receipt. Distinguishes transfer-permissioning from thin depth.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
OyaPicks: prediction markets resolving in the next 48 hours
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
OyaPicks: top 3 prediction markets by 24h volume, with prices
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Is this WordPress plugin, npm package or PyPI project abandoned? Status, 0-100 abandonment-risk score, months since last update, and the signals behind it.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Decode a MessagePack or CBOR byte stream (supplied as a base64/base64url/hex string) back into a JSON value. A malformed envelope, malformed bytes, or a value that is not JSON-representable is rejected before payment.
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_best_value_provider ranks the sellers in a category by reliability, unique buyers and price, and returns every input to the score.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Read official Base Uniswap V3 NFT and pool state at one canonical block hash. Reconcile exact token inventory and fee-growth checkpoints against optional reported raw amounts. Return signed discrepancies, reproducible inputs and uint128 accounting semantics. Recorded tokensOwed may include withdrawn principal, not only fees. Read-only; no USD valuation, trading, custody or profitability claim.
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.