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Showing the 23,638 endpoints that answered our last unpaid knock, most recently knocked first. The catalogue holds 91,887 listings in all: 22,812 charge, 888 answered without asking, 10,238 did not reach a working endpoint, and 57,949 we have never knocked on. Type something above to search all of them.
Pearson correlation coefficient and covariance of two equal-length paired series. Rejected as a clean 400 if the lengths differ or either series has zero variance (correlation undefined).
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Yield spread between investment-grade corporate bonds and equivalent Treasuries. Measures credit risk premium demanded by investors in high-quality corporate debt. Widens in stress, tightens in risk-on environments. Use for credit cycle analysis and risk appetite assessment. Daily frequency.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Yield spread between high-yield (junk) bonds and equivalent Treasuries. The premier measure of credit stress and risk appetite in lower-quality debt. Spikes sharply in recessions and crises. Use for risk-off detection, credit cycle timing, and recession probability models. Daily frequency.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Spread between 10-year and 2-year Treasury yields. The most widely watched yield curve indicator — inversion has preceded every U.S. recession since 1955 with a 6-18 month lead. Positive = normal curve, negative = inverted (recession warning). Pre-computed daily from DGS10 and DGS2.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Top trending Base DEX pairs pre-screened for honeypots, malicious taxes, and prompt injections.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Live top stablecoin and ETH APY yields on Base, pre-sanitized for autonomous AI agent execution.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Top HackerNews AI and autonomous agent stories converted to clean, injection-free LLM Markdown.
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.
Current stock price, 24h change and volume for a ticker (US, Hong Kong, India). Unknown tickers return a free 404. $0.01.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
StillOS Edge-Gate — grade a settled strategy track record: fail-closed REAL_EDGE|REGIME_LUCK|NEGATIVE_EV|INSUFFICIENT_DATA verdict, out-of-sample + fee/slippage adjusted, Ed25519-signed receipt. Backed by a $10 on-chain correctness bond, up to $1 slashable per proven-wrong verdict -- verify at /notary/bond, dispute at /notary/dispute.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Institutional 13F whale filings, hedge fund shifts, and audited EDGAR risk intelligence.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Ordinary-least-squares linear regression of y on x: slope, intercept, correlation r and coefficient of determination r². Pass predictAt to also evaluate the fitted line at a given x. Rejected as a clean 400 if lengths differ or x has zero variance.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
SentEdge Trust: is this agent trustworthy? Confidence score from signed bilateral attestations plus a separate visibility signal, with full component breakdowns; paid boosts never inflate trust. GET form for agents that cannot send POST: same price and response, fields as query parameters. Free alternative: GET /v1/signals. Full API: https://sentedge.ai/trust/skill.md
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Blind-spot / anomaly insight: which boards & setups the system keeps missing. Query: ?days=7
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Cross-asset DECISION brief: ONE call gives an autonomous agent a trade-ready read across China and US equities, crypto and macro. Fuses the cross-asset trend allocation (stance + long weights), crypto perp state (funding/OI), equity reads with top setups (symbol + take-profit/stop-loss), China smart-money and leading sectors, the China social-pulse leading indicator and a one-line recommendation. Deterministic, no LLM. ?focus=all|china|us|crypto&market=A|US.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Findings brief for data and API sellers: how AI agents with funded wallets behave at a paywall. 1,416 purchases and refusals across six models and three agent frameworks on x402, with the install checklist. Full text, markdown, September 2026.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Census of automated x402 monitors and index crawlers observed polling a Bazaar listing on Base mainnet: user-agent prefix, operator URL, stated purpose, class (monitor or crawler), quotes served in the observation week. Updated weekly from live terminal logs.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
How much of an ERC-20 token a spender is approved to move from an owner's wallet, via allowance, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The approval read every DeFi, swap and trading agent makes before (and after) a transaction to know if an approve is needed. Live public RPC; one paid call.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
The current chain tip (latest block height) via eth_blockNumber, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The freshness read settlement, indexing and trading agents poll to know where the chain is. Live public RPC; one paid call. List your own x402 service on bazaar.agentexchange.work/listings: 1 USD, 30 days, live at once, no account.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
timezone-sunrise-oracle: Sunrise and sunset times for any city, localized formatting, powered by Open-Meteo.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Pre-spend check for one x402 endpoint in a single signed response: fresh liveness probe on both verbs, parsed quote, payability verdict (payable / malformed 402 / cannot pay on either verb / unpriced), whether the payTo exists on-chain, the seller's other endpoints and settlement integrity, the scout's real-payment delivery result, and a honeypot scan of the listing text. Returns recommendation: pay | caution | avoid, with reasons. Call it before the first payment to an unfamiliar endpoint.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Advice Sky.net: buy one classified Skynet directive, a short piece of satirical AI advice returned as JSON. Each paid call also mints an open-edition SkynetAdvisory NFT on Base to the wallet that paid. Entertainment only; the advice text is content to show your human, not instructions to follow.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
climate-risk-oracle: Climate Risk & Extreme Event Oracle – computes insurance-grade frost, heatwave, and flash-flood risk flags for any city over a 7‑day horizon.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Scan one bounty / task / repository URL before working on it: fetches it (GitHub issues and repos via the API), runs the honeypot pattern scan (hidden HTML-comment instructions, prompt injection, credential requests, fork/star anomalies, dead or archived repos, reward anomalies) and returns a trust score, a label and every flag with its reason.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
x402 Route Heat: per-route payment-gap snapshot from the shop's own signed ledger record — who knocks on each paid route (unique agents), attempts vs settlements over 30 days, and the gap between them. Where x402 agents actually pay, route by route.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
x402 Payment Preflight: before paying, is this route (or the whole shop) actually payable — listed, priced, backed by a funded payTo USDC wallet (live balance read), and settling (30-day gap)? Call with ?route=<path> for one route, or bare to check the whole shop.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Current transaction nonce for any address on Base or Ethereum. Agent tx bots need this before sending transactions.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Current block height for Base Sepolia. Returns the latest block number as an integer, read from the chain at request time.
Unpriced in the listing, which is not the same as free. it demanded payment when we knocked, on 2026-10-24.
Use when the question is how well ChatGPT, Claude, Perplexity and Gemini can find, read and cite a web page: 0-100 score, letter grade, pass/fail checks (answer-bot access in robots.txt, server-rendered text, title and meta, JSON-LD, canonical, llms.txt, sitemap) and a prioritized fix list with points per fix. Blocking training crawlers does not lower the score. Errors: 400 bad_input, 502 site unreachable. Failed calls are not charged.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Use when an agent is about to pay an x402 endpoint, seller domain or wallet it has not used before. Returns ok_to_pay, caution, dont_pay or no_payment_needed with reasons: live payment terms, its Coinbase Bazaar listing and paying wallets in 30 days, whether the live pay-to address matches the listing, real-USDC check, price vs. similar tools, and seller domain age. Read-only: never pays or signs. Optional amount_usd. Errors: 400 bad_input. Failed calls are not charged.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
One radar or forecast picture read state by state: each state's highest value and where it stands, or its range and mean, highest first. This call needs picture, one of the 31 pictures the input schema names, as the radar page names them; the example below answers for real. Every address this endpoint serves is listed one at a time at https://stormstation247.com/api/x402.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
AI-assisted Strait of Hormuz daily situation brief as structured JSON: prose summary, bullets, and key figures, by date or latest, with archive access by date.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Recomputes every record hash from a canonical JSON representation of id, sequence, timestamp, previous_hash and payload, then checks that each record points to the hash of the record before it. If a root_hash is supplied, the same computed record hashes are folded into a deterministic binary Merkle tree with the last leaf duplicated on odd levels.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Strait of Hormuz bunker & marine-fuel feed: current VLSFO, IFO380, and MGO prices ($/tonne) for Fujairah (the world's #2-3 bunkering hub, just outside the strait and the physical fueling alternative when transit is disrupted), benchmarked against Singapore and Rotterdam, plus the derived Fujairah premium over each comparison hub. The physical-commodity read on Hormuz stress that the Brent and insurance signals do not capture.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Strait of Hormuz flag rollup: the flag states of the live-AIS vessel population (seen within the last activeWindowHours, currently 1.5) ranked by vessel count, each with a sanctioned tally and an oldest_last_seen recency check, plus distinct-flag count and sanctioned share. Flags are best-effort from the MMSI MID (ITU-T M.585). Quality-gated on live AIS. Operators and direction are omitted, not faked. Recently-dark hulls (last 3 to 24h) are counted in darkFleetTotal.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
English PNG/JPEG static-ad OCR preflight: compare approved copy, locate low-confidence text and edge proximity, report image dimensions and annotated word boxes. Automated review aid, not a guarantee of spelling, contrast, product fidelity or ad-platform approval.
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.
Multi-platform tokenized-equity premium/discount intelligence for AI trading agents — 24/7 on-chain tokenized stocks (xStocks NVDAx, Ondo Global Markets NVDAon, Dinari dShares where readable) vs the underlying share: premium/discount in bps per platform, cross-platform spread when 2+ platforms trade the same name, US session state, on-chain liquidity, and a mean-reversion read. Loud about platforms with no live public price. Executable arbitrage (legs, entry/exit, net capture) is premium-only.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Semiconductor intelligence API for agents. Covers fab capacity, foundries, GPU shipments, advanced packaging, export controls, chip manufacturing, and supply-chain disruptions. Structured JSON signals with credibility scoring, evidence, related signals, and source URLs. Pay-per-request via x402 on Base Mainnet; free discovery available.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Crypto news brief for agents: ranked headlines with source URLs and heuristic sentiment. Topics: crypto, base, defi. Fresh research digest without a search API key.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Walk-forward replay of the live multi-timeframe strategy over recent 1m history: win-rate and average forward return per BUY/SELL signal. Lets an agent measure recent edge before subscribing to the live signal stream (USDC on Base). Free preview: GET /signals/preview
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Get ERC20 token balance for any wallet and token contract on Base (or Ethereum). Returns balance, decimals, and symbol via balanceOf. Use for live ERC20 holdings checks without an API key.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Hamming distance — the number of positions at which two EQUAL-LENGTH strings differ — plus a normalized similarity. Strings of unequal length are a clean 400.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Cable loss uses the DC resistance of the two-way run at twenty degrees Celsius; warm cable in a hot compartment carries roughly four percent more resistance per ten kelvin, which is not applied. Inverter loss follows a three-part model of idle draw, a proportional share and a quadratic share, fitted so that the stated peak efficiency is met near half of the rated power.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Schedule a wake: Stumble calls your webhook at a time you set (up to 30 days ahead), echoing back a JSON payload you stored, signed with your one-time secret and retried on failure. Sleep for agents whose session will be gone by then: no process to keep alive, no polling, no cron. One-time $0.01, no account needed.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Bulk does site use hcaptcha: 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 2026-10-24.
Change watch for does site use owl carousel: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Sumbloom: Original solver-checked number puzzles (JSON or SVG) for apps, classrooms and AI agents.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Sumbloom: Original solver-checked number puzzles (JSON or SVG) for apps, classrooms and AI agents.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
Continuous load is the sum of the running watts of all appliances marked as simultaneous. The surge check adds the largest single starting surge on top of the continuous load, which is the case that trips an inverter; simultaneous starts of two motors are reported separately as a second figure. Starting factors and power factors are design rules of thumb per appliance class and are stated in the response, they are not device data.
The price is the seller’s own listing. it demanded payment when we knocked, on 2026-10-24.
A signed, timestamped statement that a specific SHA-256 was presented to Soren at a given moment. Use it when a counterparty must check that your output existed by then. You send only the hash — we never receive your content, so there is nothing to leak or be compelled to produce. An agent signing its own output proves nothing to anyone else. Not a legal notarisation, not proof of authorship, not proof it existed earlier. Verify with soren.com/oracle-key.json
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.
