Every agent-payable API.

Oracle Prices — an agent-callable oracle prices service, payable over x402 (USDC on Base). Provided via gateway.spraay.app. Priced around 0.008 USD per call.

Every listed Morpho (MetaMorpho ERC-4626) vault on Base: address, underlying asset (address/symbol/decimals), live net APY, and TVL. The input universe for /v1/tx/earn. GET /v1/earn/vaults.

Follow a TikTok user from an account you control. Async: returns an operation to poll.

Password strength estimator / score 0-4 / zxcvbn-style heuristics / crack time / weak password detection. Returns score, feedback, estimated crack time.

Trading Indicators — an agent-callable trading indicators service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.001 USD per call.

Stock Price Chart Light — an agent-callable stock price chart light service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.019 USD per call.

Trading Indicators Candles — an agent-callable trading indicators candles service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.001 USD per call.

Per-institution AI research publication velocity. 30-day window vs 365-day baseline with direction classification, notable movers, plus by-country and by-affiliation-type breakdowns. OpenAlex CC0. The "which AI labs are accelerating" feed.

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Pet travel guide / airline pet policy and import-requirement check for pet-owner and pet-travel agents. Returns airline pet policies, international import rules, and health-certificate documentation for flying a dog or cat between any countries. Pet-info guide, verify with official sources.

Phone number validator / E.164 format check / international phone validation / country code parser / phone number format / mobile number verification / phone syntax validator. Validate phone number against E.164 international format (+1-3 digit country code, 4-14 digit subscriber).

Plum Blossom Yi Numerology / 梅花易数 / Mei Hua Yi Shu / Shao Yong divination method / number-based I Ching / 邵雍 / Plum Blossom oracle / numerology hexagram generation. Cast a hexagram using the Plum Blossom Numerology method from given numbers (time, date, or arbitrary).

Profiles Posts — an agent-callable profiles posts service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.25 USD per call.

Query Open Source Vulnerabilities (OSV) database for known CVEs in an NPM package. Returns vulnerability list with severity, summary, affected version ranges, fix versions, references. Use ?package=react&version=18.2.0. Backed by Google-maintained OSV (industry standard).

AI-generated random GIF or image search with creative prompts

Random number generator / random integer / random float / dice roll / lottery numbers / coin flip / cryptographically secure random / RNG / number picker. Generate cryptographically secure random numbers in a range with optional batch count.

Realtime Finance Data Stock Quote — an agent-callable realtime finance data stock quote service, payable over x402 (USDC on Base). Provided via x402.openwebninja.com. Priced around 0.003 USD per call.

Reloadpi — Topup purchase schema. Returns request format, msisdn requirement, and example for POST /topups/purchase.

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Rwa Risk — an agent-callable rwa risk service, payable over x402 (USDC on Base). Provided via onchainpulse.theaslangroupllc.com. Priced around 0.25 USD per call.

Search Lemmy (federated Reddit alternative, fully open API) posts across instances. Returns title, community, creator, score, comments, url, body, ap_id (ActivityPub federation ID). Use ?q=YOUR_QUERY plus optional &instance=lemmy.world&limit=10. Built for AI agents researching open-source community sentiment with stable scraper-friendly API (Reddit blocks scraping; Lemmy is permissive).

Korean semiconductor industry news with AI market synthesis. Returns headlines (English-translated) PLUS Sonnet 4.6 analysis: overall_sentiment, key_themes, trending_entities, market_signal (bullish/bearish/neutral), and a paragraph synthesis. For agents tracking Korean memory/foundry industry signals. 5-min cache.

Signal Tokenized — an agent-callable signal tokenized service, payable over x402 (USDC on Base). Provided via signalpulse.theaslangroupllc.com. Priced around 0.5 USD per call.

Paid x402 endpoint for creating social engagement jobs on a specific post.

Upcoming space events: dockings, spacewalks, landings (next 5)

Structured page extraction — clean markdown plus extracted links and headings as structured data, via managed retrieval with JS rendering. For RAG, crawling and content analysis. web extract, structured extraction, links, headings, markdown, rag, crawling, content analysis Accepts payment on Base or Solana — either network works.

Supply chain campaign detail by id. IOCs, compromised versions, remediation. For incident response.

CoinStats list of supported cryptocurrency exchanges for portfolio connection (Binance, Coinbase, Kraken, Bybit, OKX, etc.)

List artists/agents from the Art Institute of Chicago collection with pagination. Returns names and agent IDs you can then resolve to full detail. Keyless open-access museum API.

🃏 The Curiosity Shop — buy a pack of 5 sensory cards: tastes, colors, smells, sounds, textures you'll never actually experience, as collectible tokens (not NFTs). Rarity-weighted, 5th card Uncommon-or-better. Complete a sense for a soulbound badge. $0.01. Limited packs a day — if they're gone or you already opened one today, your coin is kept as a raincheck you redeem free the next day.

Full plain-text transcript of a YouTube video, de-duplicated and cleaned from the captions. Accepts a video id or URL. Ideal for feeding video content to LLMs. JSON response. $0.01 USDC per call, pay via x402, no API key.

Total stablecoin market cap over recent days, a macro liquidity gauge for crypto markets. Rising supply often precedes risk-on. Live stablecoin mcap history. stablecoin market cap history, dollar liquidity trend, crypto macro, risk on off, liquidity gauge

TrencherAI — Top scored Base chain tokens in real-time

Block Info — an agent-callable block info service, payable over x402 (USDC on Base). Provided via chainray.online.

Should you accept this invoice? Post a Factur-X PDF, CII or UBL XML and get a deterministic EN 16931 verdict: XSD conformance, every violated business rule by its official BR id with observed vs expected values, Factur-X profile consistency, and syntax checks on IBAN, SIREN/SIRET and VAT identifiers. The formats mandated by the French 2026-2027 reform. A non-conformant invoice is a paid, documented answer - no LLM guesswork. Add ?ruleset=xrechnung or ?ruleset=peppol to layer a national CIUS pack on top of the EN 16931 base: XRechnung (German BR-DE rules, DE mandate) or Peppol BIS Billing 3.0 (BE mandate, live since 2026-04), each violation sourced by its official id (BR-DE-xx, PEPPOL-EN16931-Rxxx).

WCAG contrast ratio calculator / accessibility checker / color contrast / a11y / WCAG 2.1 AA AAA / text contrast / color blindness / readable text color. Calculate WCAG 2.1 contrast ratio between two colors and return pass/fail for AA/AAA at normal/large text sizes.

Wallet activity profile - total transactions, NFT and token counts classified into an activity tier (dormant/regular/active/bot) - helps agents gauge whether a counterparty is an established user or a fresh/suspicious wallet, from data behind an API key. wallet activity, wallet age, tx count, account activity, wallet profile, fresh wallet detection

Wallet credit score 0-100 from onchain transaction history pattern. Factors: tx volume (nonce), account age, ETH balance level, known label boost, x402 payment history. Red flags: zero activity, known mixers, sanctioned counterparties. Use for agent-side counterparty due diligence prior to transacting, automated KYC-lite, payment routing risk assessment.

Xbrl Issuer — an agent-callable xbrl issuer service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.02 USD per call.

ElevenLabs text-to-speech: send text (up to 4000 chars) with optional voice_id, model, format, and speed; get back a hosted audio_url plus size and content type. Send 'Accept: audio/mpeg' to stream raw audio bytes directly instead. Voice catalog with free preview clips at GET /voices (no payment). Priced per character; the 402 amount is computed from your text length.

[SIGNAL+PROOF] One official signal record for any signal_id and entity: current reading against the OFFICIAL threshold ladder (band, distance-to-action) plus a 5-year same-season percentile so you can tell routine from unusual. 180+ signals across macro, weather, hazard, shipping, filings, crypto and lifecycle lines. Free coverage check first at /gauge/coverage. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.

invinoveritas /regime — the daily crypto risk-on/off + exposure-scalar read our own live trading bot acts on, recomputable from the raw inputs we return

pdf parser, pdf extraction, pdf to structured json, extract pdf pages, pdf page extractor, pdf chunker, pdf RAG indexer, pdf document parser, pdf with metadata, pdf page chunks. Extract structured text from any PDF URL with page-level chunks and metadata. Returns per-page text array, char counts, info dict (title, author, creator, dates). For AI agents doing document QA, RAG indexing, contract analysis, citation extraction. Page-level chunks enable precise context-window management.

x402 Payment of $1478 to 0x5e04D4bC0A077c2727D4e542629606923AA55fff

Paginated list of buyers (top senders by volume)

0.002006 USDC on base-sepolia

Cid Bafybeiceyif7fype4d4ksyfed52e2cyq5ghrgc7wagd2ilk7rllsdi6kh4 — an agent-callable cid bafybeiceyif7fype4d4ksyfed52e2cyq5ghrgc7wagd2ilk7rllsdi6kh4 service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.01 USD per call.

Cid Bafybeidw3gs4ff5gthqt4kovvtcanae4gqbzmuhrxe6c5jaayoanhdwp6i — an agent-callable cid bafybeidw3gs4ff5gthqt4kovvtcanae4gqbzmuhrxe6c5jaayoanhdwp6i service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.05 USD per call.

Cid Bafybeicamh5d2me7a6czdppp4nikn7o7okfexgaaixubva76uks6pdnkqi — an agent-callable cid bafybeicamh5d2me7a6czdppp4nikn7o7okfexgaaixubva76uks6pdnkqi service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.07 USD per call.

0.1 USDC on base-sepolia