Explore APIs

Quick research: ask any question, get a concise sourced answer with key points, sources, a confidence rating, and anything that could not be verified.

OpenAI-compatible chat completion. Pay per request in USDC via x402: no signup, no API keys. Price scales with prompt size and max_tokens.

real-time cryptocurrency price snapshot with usd prices from the ftso yggdrassil value provider

Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an

Split EVM calldata into its 4-byte selector and 32-byte words, naming common ERC-20/721 calls and spotting addresses.

Is this Base token safe to buy? One call returns a decision-grade trade-safety verdict — SAFE | CAUTION | AVOID — with risk_score (0-100) and reasons: honeypot/sellability simulation, owner-renounced + mint/pause/blacklist/fee-setter/upgradeable-proxy checks, symbol/name/decimals, and Uniswap v3 WETH-pool liquidity (USD). Replaces many RPC calls and prevents a bad trade. Use when an agent is about

Token Preflight: pre-trade safety check for a Base ERC-20 (buy/sell simulation, taxes, owner powers, liquidity, LP, holders, verification) with a shareable verdict card. Not investment advice.

Detailed profile for a single AI agent (by chain + agentId)

Latest releases feed for researcher and journalist agents. Returns the newest FOIA releases, declassified documents, and court rulings governments and agencies have just made public globally.

Flight compensation eligibility across 7 regimes — EU261, UK261, Canada APPR (incl. s.20 denied boarding), Brazil ANAC 400, Turkey SHY, India DGCA, Israel ASL — plus Montreal Convention baggage claims (effective-dated SDR caps, Art. 31 deadline math): deterministic amounts, legal citations, carrier defenses, evidence list. No LLM — every number is recomputable. Eligible? Get the ready-to-send clai

Board-game recommendations by group profile — player count, complexity tolerance, theme, playtime, budget, and ages, grounded in current web reviews/discussion (never BoardGameGeek data). Returns a ranked shortlist with fit reasoning, honorable mentions, and honest avoid-list.

Recent material public-source changes for tracked Bitcoin services.

Best exchange rate and FX margin for money transfers: live mid-market rate vs provider markups for real-cost analysis. What recipient actually gets, how much currency-conversion markup providers charge, and exact converted amount for any currency pair. Live ECB mid-market rate plus rate environment. Worldwide currencies.

Looks up a legal entity in the GLEIF LEI index by LEI, company name or ISIN: legal name, status, jurisdiction, legal and HQ address, LEI registration status and renewal date, direct and ultimate parent, number of subsidiaries and linked ISINs. For KYB, counterparty and compliance checks.

Which free Sentinel-1/2, ASTER, and Landsat scenes cover a target area, plus a geological remote-sensing guide, for exploration and geology agents. Returns scene availability and which sensor maps which alteration mineral.

Macro dashboard in one call: 13w/5y/10y/30y Treasury yields, dollar index, gold, WTI crude, VIX. JSON.

Dietary restriction guide / food allergy guide / diet guide (gluten-free/celiac, keto, vegan, low-FODMAP, renal, diabetic). Returns safe foods, hidden sources to avoid, safe swaps, and restaurant ordering tips for any dietary restriction, allergy, or medical diet. Worldwide.

Base gas price — Live Base mainnet gas price from JSON-RPC.

Biomarker / blood test interpretation (lab result analysis) for longevity and health agents. Reads any lab value (ApoB, hs-CRP, HbA1c, IGF-1, Lp(a), testosterone, ferritin) through the lens of longevity science: what it means for biological aging and disease risk, and how to improve it. 50+ key longevity biomarkers, worldwide. Health intelligence, not medical advice.

Clean-sheet probability — goalkeeper stats, defensive metrics, home/away split, BTTS and under-2.5 analysis. For football betting agents.

Check whether a smart contract's source code is verified on Sourcify, the open verification registry, by chain id (Base is 8453, Ethereum 1) and address, with the date it was verified. A contract not on Sourcify fails; it may still be verified elsewhere, so a fail means "not verified on Sourcify", nothing stronger.

Fetch any public URL and return a clean, readable markdown or JSON extract for AI agents. Pass the target as ?url=<encoded>. Ideal when you need to read webpages, docs, or articles without a browser. Blocks script/style tags, normalizes links and images, strips HTML.

Fetch a URL and extract clean main-content text with title, description, word count, and char count; boilerplate (nav/footer/sidebar/ads) is stripped.

Live spot price and 24h change for a crypto token symbol.

Expiring, pending-delete and just-dropped domains with backlink authority (Majestic referring subnets), Wayback archive history and brandability score. Registrable with USDC at stabledomains.net.

Full-history address-poisoning check before you send USDC on Base. Same risk/lookalike/seenBefore logic as /address/check, but funding history comes from ONE Blockscout index call (x402, up to the sender's 500 most recent Base USDC transfers; v2 page fallback) so coverage is usually the sender's full Base USDC history. Body {from, to}. Not charged if the index is down. Cheap partial/RPC tier: POST

0.001 USDC on base

Check whether an approved Base token swap is eligible before supplying a wallet. Returns verified token contracts, indicative output, liquidity sources, fee estimate, warnings, and the exact next action. No custody, signing, or execution.

Webpage text extraction: extract clean text from any webpage. Extract the clean readable text from a public webpage with title, headings, links and SHA-256; add format=markdown for Markdown or render=true to render JavaScript pages. Web read / fetch URL / scrape URL to markdown — public webpage to clean text or Markdown with headings, links and SHA-256, for RAG and research. Batch up to 10 URLs; o

Unidad Indexada (BCU) para una fecha. Sin `fecha` devuelve la de hoy.