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Eurostat Comext trade facts (value and quantity).

Premium CASSIA opportunity intelligence

Bitcoin read-only RPC and supported simulations. Submit method and params as JSON. Method schemas, limits and prices: https://api.block402.xyz/docs/api.md. Obtain a bound quote with a private Idempotency-Key before signing.

Turn text into a numeric embedding vector for semantic search, RAG and similarity. Multilingual.

Stored odds-comparison snapshots from the arbitrage worker for trend analysis. $0.01 USDC per call on Base.

ApexScout one-cent x402 proof. Buyer-controlled GET retry only; unpaid 402 is not revenue. Successful paid proof includes one free receipt-bound compatibility diagnosis. It requires explicit action, never navigates or pays automatically, may return no paid recommendation, and requires separate buyer approval for any later paid recommendation.

Real-time Fuse payment network statistics — transaction volumes, network health, gas tiers, FUSE token price.

Trust score for one agent. Pass agent_id as a query parameter so every check is the same resource.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.

Deterministic JSON evidence checks with signed verification evidence

List governance proposals

Paid HTTP redirect chain + final URL via x402

Text Hash API

QCN factors_index: out-of-sample factor statistics (Sharpe, bootstrap CI, walk-forward robustness). Research artifact only, not a live signal.

Paid x402 liveness probe

Access to protected psf-bch-api resources (0.001 USDC)

Expand a People-Also-Ask question into related questions (+ autocomplete)

Resolve a ticker, CIK or company name to the SEC registrant: CIK (plain and 10-digit), official name, tickers, exchanges, SIC code + industry description, entity type, filer category, fiscal year end, state of incorporation, EIN, business address, phone, former names and latest filing, plus up to 9 other name matches. Data: SEC EDGAR public APIs (sec.gov, data.sec.gov), US public domain, no API ke

Security advisories for one open-source package version (npm, PyPI, Go, Maven, crates.io, NuGet, RubyGems, Packagist, Pub, Hex...). Returns a verdict (vulnerable yes/no, vuln count, max severity, max CVSS v3 score, counts by severity, recommended upgrade version re-checked against OSV, latest stable version and whether it is affected) plus every advisory: OSV/GHSA id, CVE aliases, summary, severit

Japanese postal code (郵便番号) to address: prefecture, city, town in kanji, kana and romaji, JIS code; batch up to 100

Audit a domain's email authentication DNS: SPF (all qualifier, includes, ~DNS lookups vs 10 limit), DMARC (p, sp, pct, rua/ruf, alignment), DKIM (common or given selectors, key type/length), MX, BIMI, MTA-STS, TLS-RPT. Returns per-check status, issues, recommendations, score 0-100 and grade A-F. Costs $0.003 USDC per call via x402.

Gas cost oracle: current gas price and the live USD cost of a transfer, a swap, and an ERC-20 approval on Base.

Random UUID v4

Private LLM inference, Anthropic-compatible. Sealed open models in TDX + GPU enclaves or Claude; streaming and tool calling; signed Ed25519 receipt naming the attested enclaves; zero retention. Pay per request in USDG, USDC (Base, Solana) or UMBRA.

Fetches a public web page and returns its readable text as JSON: url, status, title, char count, and clean text with scripts, styles and tags stripped. Blocks private/localhost addresses.

Fetch a public web page and return clean Markdown for LLMs: title, description, canonical URL, language, word count, body as Markdown (headings, lists, links, tables, code) and the list of absolute links. Uses the page main/article element when present; scripts, styles and (by default) nav/footer/sidebars are stripped. No headless browser, so JavaScript-only pages return little text (flagged with

Token risk verdict engine: A-F tokenomics score for one covered token from its dated token unlock schedule — unlock cliff analysis (next release date, size vs float, largest release in 90 days), sell pressure estimate, published grading rubric, and a signed, hash-chained receipt on every paid response. Keywords: token risk, token unlock, tokenomics score, unlock cliff, sell pressure. Bundle: GET /

Paid HTTP redirect chain + final URL via x402