Use this to read published Quotient signals. Sports signals return one game-level pick and markets[] with every linked venue listing, its signal_side, price, and availability. No venue is primary or preferred. Missing quotes do not hide listings. Venue filters find games available there and retain all listings. Non-sports signals retain their market, pricing, and lifecycle fields.

Pay-per-read pieces by independent publishers. Find one by question first: POST https://tenjin.sh/api/search is free and returns payable candidates or an honest MISS. The 402 carries a free preview; pay it for the full text JSON. API reference: https://tenjin.sh/openapi.json. Full catalog: https://tenjin.sh/.well-known/x402

SEC financial statements for a US-listed company: income statement, balance sheet, cash flow, up to five periods, annual and quarterly. Every figure names its XBRL concept, its filing and date, and whether it was filed, derived from YTD figures or computed; restatements flagged with the prior value; unreported cells explicit. Plus the filing index (10-K/10-Q/8-K, item codes). Funds and non-USD filers: refused uncharged. Public-domain SEC EDGAR.

Extract still frames from any video as JPEG, WebP or PNG: sample many for a vision model, or grab one frame at a given timestamp (a thumbnail/poster/screenshot). Modes: every frame, every Nth, a rate in seconds, keyframes, N evenly spaced, or exact timestamps. One frame at 5s: mode=timestamps, timestamps=[5], format=jpeg. Up to 1000 frames/job; result is a manifest of frames with timestamps and download URLs, kept 24h. USDC over x402; no account; input <=100 MB.

The chain clock on Base: latest block number and its timestamp, plus the node's current time and the lag between them. No parameters. No third-party API, no cache.

Service health probe — build version, last pipeline run, current signal/composite/asset counts. Sub-second, no DB writes. The cheapest end-to-end pay-per-call check before issuing real queries.

Read-only JSON-RPC access to Ethereum mainnet, served by the Pocket Network decentralised supplier set. Pay per request in USDC; no account, no API key.

Twitter/X trends right now — the ranked list of trending topics and hashtags on Twitter/X for any country by ISO code (US, GB, JP, worldwide) or a city by WOEID, each with post count, search query and related trends. For trend tracking, social listening and viral-topic discovery.

Academic letter grade with red-pen marginalia for anything. $0.01 USDC.

Everything the Strait of Hormuz crisis monitor knows in one call: verdict, oil, transits, insurance, carriers, pipelines, indices, prediction markets, events, full daily brief.

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. On the paid retry send the payment together with header x-api-key: rwk_... or Authorization: Bearer rwk_.... A payment without a live key is not charged. Holder key, not a merchant key. There is no paid registration. POST https://api.loyalspark.online/siwe-nonce, sign a SIWE message (Chain ID 8453) with the holder wallet and no special phrase, then POST {message, signature, name} to https://api.loyalspark.online/recipient-api/register. The rwk_ key sees only that wallet: balances, redeem, vouchers, transfer calldata, P2P, gift claims. Guide: https://loyalspark.online/.well-known/skills/00-getting-started.md The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve grounded packets (graded claims, quotes, evidence with citations). POST a JSON body { query, limit? (<=100), packetTypes? }. Flat micro-price per query.

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. On the paid retry send the payment together with header x-api-key: lsk_... or Authorization: Bearer lsk_.... A payment without a live key is not charged. Read key, no browser: POST https://api.loyalspark.online/x402-gateway/register-agent. HTTP 402 is $0.01 USDC on Base. Pay it and do not send an API key. You receive lsk_ once, scope read only: list your programs, rewards, balances, and analytics. That key cannot mint, deploy a program, create rewards, or trade. A new wallet gets a 45-day Pro trial (5 agents, 10,000 calls/month), then Free (1 agent, 200 calls/month, 1,000 tokens minted/month, 1.25% mint fee) unless that wallet pays. The $0.01 is the call price, not a subscription. No free seat returns 403 before any charge. Write scopes (mint, create_program, manage_rewards, trade) use the same plan: dashboard https://loyalspark.online/merchant → AI Agents, or free SIWE — POST https://api.loyalspark.online/siwe-nonce, sign Chain ID 8453 with the exact phrase 'Register Loyal Spark merchant agent', then POST {message, signature, name, scopes} to https://api.loyalspark.online/agent-register-siwe. Look first with no key: GET https://api.loyalspark.online/x402-gateway/public-programs ($0.001, active programs, not your own list). Guide: https://loyalspark.online/.well-known/skills/00-getting-started.md The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

Look up any Legal Entity Identifier (LEI) for company information lookup and counterparty / know-your-business (KYB) identity against the official GLEIF global registry — returns legal name, status, jurisdiction, legal form and registered address, real-time, worldwide coverage.

UMA resolution dispute and flip base rates by category and criterion clarity; descriptive historical compatibility, not a market-specific forecast. BEFORE YOU PAY: free substitute https://dash.polym.uk/uma-base-rates.json and https://dash.polym.uk/uma-flip-rate.json. THIS ADDS: The two artifacts joined into one response, dispute axis and flip axis already aligned by category. The underlying numbers are the same ones in those two free files.

Use when an agent is checking that its x402 payment headers and query encoding survive a paid round trip. Returns The query parameters you sent, echoed back with a server timestamp. $0.01.

Search a privacy-safe metadata index derived from 77,053 archived census rows and deduplicated to 23,370 unique content hashes. Includes readiness, quarantine, domain, file type, field names and provenance hashes; does not redistribute raw fields, media or third-party content.

Sentiment analysis API — analyze sentiment of text and get a text sentiment score in one call: classifies positive / negative / neutral / mixed polarity with a -1 to +1 sentiment score, plus emotion detection in text (joy, anger, sadness, fear, surprise, disgust, trust, anticipation). Aspect-based sentiment and opinion mining for customer feedback analysis — analyze reviews, support tickets, social posts, chat messages. Via Claude Haiku.

SEC filings full-text search. Searches SEC EDGAR filings - 10-K, 10-Q, 8-K, and every other form type - by keyword, company name, ticker, or CIK, with date-range filtering, returning company, form type, filing date, accession number, and a direct document link. For SEC filings research and disclosure monitoring. Keyless.

Aktuelle CO2-Intensität des deutschen Strommix.