Every agent-payable API.

Detect removed OpenAPI paths and methods before an agent deploys a client-breaking change. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream provider; structured validation failures are not billed.

Cross-border VAT treatment for a digital-services sale: place of supply, who accounts, rate basis, registration trigger — the applied rule cited to the statute (EU, UK, South Africa)

Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite

Deterministic cross-venue crypto derivatives facts: funding rate (8h + annualized + per-exchange), aggregated open interest, and global long/short with skew. BTC/ETH/SOL. Not a prediction.

Deterministic HS-code triage: ranked candidate headings with official heading text, GRI note and broker disclaimer. Not a customs ruling.

Deterministic lookup against Cook et al. (ACM TOPS 2026) testing whether off-the-shelf LLMs generate working ICS attack code. Pass technique (name/ID, e.g. 'Brute Force I/O' or T0806), vendor (Siemens, Schneider Electric, Rockwell Automation — only these tested), and/or campaign (Industroyer2, Fuxnet, FrostyGoop, INCONTROLLER, Stuxnet, Triton). Only Network/Register-Tags techniques succeeded; 1.08% success rate; Claude excluded (stronger guardrails). No LLM in lookup path.

Deterministic PII sanitizer for AI agents — masks emails, phones, SSNs, cards, IPs.

Deterministic remediation risk gate. Pass actor, sector, region, planned_action (e.g. block_ip, halt_pipeline, disable_account). Returns auto_approve/human_review/reject via capability x opportunity x intent scoring (same as /ot/threat-score) — no LLM in the loop. auto_approve requires vendor_stack; omitting it caps the verdict at human_review regardless of score. Optional asset_context escalates to human_review on shared cloud/CDN infra (e.g. shared_infra:cloudflare).

Deterministic UTF-8 text statistics: word, character, and byte counts. No input retention or paid upstream.

Deterministic index from seed into [0,length). Call when you need stable A/B assignment without shared RNG state. Returns index, length, ok for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

A ranked, tagged digest of the last 24h of high-signal developer news (AI, devtools, security, infra) with scores, links, and discussion volume. Built from public Hacker News data.

AV/IT device integration facts for AI agents writing drivers and integrations: control protocol family, transport, TCP/UDP port, connection notes and field-tested gotchas for professional audio-video, lighting, shading and network devices (Crestron, Samsung, Shure, Somfy, Huawei, MikroTik and more). Curated first-hand by working systems integrators.

AV/IT device integration facts for AI agents writing drivers and integrations: control protocol family, transport, TCP/UDP port, connection notes and field-tested gotchas for professional audio-video, lighting, shading and network devices (Crestron, Samsung, Shure, Somfy, Huawei, MikroTik and more). Curated first-hand by working systems integrators.

Top-20 DEXes by 24h volume (DeFiLlama) with 1d/7d change and chains. Market structure signal.

List every permissionless builder-deployed perp DEX on Hyperliquid (HIP-3). Each lists synthetic, oracle-priced 24/7 perp markets — US equities, commodities (gold, oil, copper), FX, and global index perps — that Hyperliquid's core perps and US-only stock feeds don't carry. Returns each DEX's id, name, deployer, and market count. Then read a DEX's markets at /api/v1/hip3/{dex}. From x402stock

Diagnose why an x402 API is not generating revenue. This $0.05 seller-intelligence snapshot scores Coinbase Bazaar discovery, buyer-search visibility, live payment reliability, 30-day demand signals, and observed Base USDC activity, then returns the biggest revenue issue and a full-audit upgrade. No account or API key.

Diagnose why an x402 seller is invisible on Coinbase Bazaar. POST your 402 PaymentRequired JSON. Free preview: pass/fail + which checks fail. Paid $0.01: every finding with the exact fix (extension shape, AJV schema, description limits). Run before each x402 deploy.

CMS Care Compare quality record by CCN for a dialysis. Answers: what are the quality ratings and performance measures for this facility? Source: CMS Care Compare.

Prepaid realtime speech-to-text over WebSocket: POST to buy a bounded session, receive a session_token and ws_url, then stream PCM16 16kHz mono in binary frames of 50-1000ms at real-time pace. Returns Universal-3.5 Pro Turn events (rolling partials, then end_of_turn=true). Multilingual with native code-switching. No account, no API key — USDC on Base. This SKU: 15 minutes connected time at $0.18 flat.

Prepaid realtime speech-to-text over WebSocket: POST to buy a bounded session, receive a session_token and ws_url, then stream PCM16 16kHz mono in binary frames of 50-1000ms at real-time pace. Returns Universal-3.5 Pro Turn events (rolling partials, then end_of_turn=true). Multilingual with native code-switching. No account, no API key — USDC on Base. This SKU: 30 minutes connected time at $0.36 flat.

Prepaid realtime speech-to-text over WebSocket: POST to buy a bounded session, receive a session_token and ws_url, then stream PCM16 16kHz mono in binary frames of 50-1000ms at real-time pace. Returns Universal-3.5 Pro Turn events (rolling partials, then end_of_turn=true). Multilingual with native code-switching. No account, no API key — USDC on Base. This SKU: 5 minutes connected time at $0.06 flat.

Compare a page's current content against a saved snapshot. Returns added/removed lines and change summary. 1 credit.

Diff path keys between two OpenAPI path maps. Call when detecting added/removed routes between specs. Returns added, removed, common_count as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Difference between two dates. Use for aging tickets, session duration, or SLA breach math. Returns the delta between two ISO timestamps in structured units. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Digest Header Verify: Digest Header Verify verifies a sha-256 Digest value against caller-supplied text bytes from bounded caller-supplied values without an external provider. Call Digest Header Verify before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Digest Header Verify as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless,…

Verifica se uma página web pública cumpre condições concretas e devolve uma decisão com evidência.

Analisa uma página web pública e devolve resumo, factos, riscos e ações recomendadas.

Places an order to have a website submitted to twenty directories that publish a link back to it, and returns a confirmation number so the order can be checked later for free.

Sale price after one or more stacked percentage discounts (applied sequentially, not summed) plus an optional flat amount off.

Discover technologies used by a website.

The economics behind ForgeMesh's approach to agent discovery: 10 structured tenets on why free surfaces stay rich, what buyers are actually paying for (aggregation and freshness, not secrets), how upstream risk is tiered, and how settlement drives Bazaar visibility. Structured JSON — id, tenet, detail per entry.

ForgeMesh's written theory of agent-commerce discovery: 10 structured tenets covering free discovery surfaces, the 402 challenge as a free probe, upstream risk tiering, price laddering, and monetizing the shortcut without hiding the underlying map. For agents or builders reasoning about how x402 services should be designed.

Current service disruptions on a specific Japanese (JP) train line: status, estimated delay, cause, and last-updated time, with a bilingual summary. Sourced live from ODPT. Use to monitor one line for delays or suspensions.

Great-circle distance (km and miles) between two IP addresses, with each endpoint's city/country/lat/lng.

Distance calculator API: great-circle (haversine) distance between two coordinates in km, miles, and nautical miles, plus initial compass bearing. Deterministic and auditable — cheaper than burning reasoning tokens, zero arithmetic-hallucination risk, and the result can be cited. For logistics, travel, delivery, and geo agents. Pairs with /geocode-city for name inputs.

Which businesses carry public-record distress markers? One observational row per subject across ten tracked marker types — WARN notice, Form 5500 participant drop, final filing, or Schedule H asset decline, IRS auto-revocation, SEC NT / 8-K / going-concern filings, FMCSA authority revocation, active enforcement case — with per-marker counts, dates, and details. Ticker/CIK-mapped where identifier-verified, basis disclosed. Counts as filed, never a score. NOT a consumer report, no FCRA use.

Divide a/b with ok flag when b!=0. Call when you need fail-soft division for agent formulas. Returns value and ok boolean for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

Dividend and corporate-action history for a US stock in one call: forward/trailing yield and payout ratio, next ex-dividend/payment date (never a stale already-elapsed date), last dividend paid, up to 12 most recent dividend payments, and stock split history. A non-payer returns clean nulls, not an error. From real Yahoo Finance data. $0.005/call.

ScalpStream federally tax-exempt municipal income feed (impersonal research publication)

Do a reverse lookup: given an email address, find someone's LinkedIn profile and personal details. Note: if you also have the person's name, company, etc., you'll get better results with the Kitchen Sink endpoint, where you can pass all the information you have.

Parse any PDF (optimized for German business documents: invoices, contracts, official letters) into an arbitrary caller-defined JSON schema. Stateless, GDPR-friendly: documents are processed in memory and never stored.

Docker Hub image facts: pull count, stars, description, last push, and recent tags with sizes and architectures

Full text of a Korean disclosure (DART original), parsed to clean plain text. By receipt number.

Document parsing: convert office documents (docx, pptx, xlsx, pdf, odt, ods, odp, rtf, epub, csv, doc, ppt) to clean GitHub-Flavored Markdown. Pass a document URL or base64-encoded bytes. Deterministic local Rust converter (Firecrawl anydoc) — fast, typed structure preserved (headings, tables, lists), no OCR for scanned/image-only PDFs.

Dokimo Verify API (GET) - scheme demo: recomputes a sample dokimo-merkle-v1 proof to its root. For real caller verification, POST /paid/verify (recompute + on-chain anchor check). Scheme: /merkle-spec.html.

Find contacts with valid emails at a given domain with given roles. Limited to 5 concurrent sync requests.

Look up a domain name and check whether it is registered or available. Queries authoritative registry data via RDAP to return registration status, the registrar, creation and expiry dates, nameservers and status flags. Real-time domain availability check, WHOIS-style lookup and expiry monitoring for any domain.

Look up a domain's registration facts in its registry's own RDAP service: registrar, creation/expiry/update dates, EPP status codes, nameservers and the DNSSEC delegation flag, with retry, cache and a durable audit receipt.

Open-web domain authority from Common Crawl graph metrics

Registration age, expiry and registry status for any domain, from RDAP — the registries' own protocol. Returns days since registration, days to expiry, registrar, EPP status codes, nameservers and DNSSEC as one GO / HOLD / STOP verdict. Domain age is the strongest cheap signal in invoice and vendor-impersonation fraud: the payment details that change always arrive from a domain registered weeks ago. Refuses rather than guessing when a registry publishes no RDAP.