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Convert power between dBm, dBW, mW and W, and the RMS and peak voltage across 50 ohms (or your impedance).

Returns an indicative foreign-exchange mid rate for a currency pair such as usd-eur. Test endpoint (persona-agt1-d-bank-ai-prod) on Base Sepolia.

Verify a US healthcare provider by NPI or name against the CMS NPPES registry: entity type (individual/organization), primary taxonomy specialty, practice city/state, enumeration date, and active/deactivated status. Public CMS NPPES data. City/state only — no street addresses or phone numbers.

Compact DeFi protocol brief by slug or name: current TVL, 1d/7d/30d TVL change, TVL by chain, category, chains, audit links, fees and revenue for 24h/7d/30d where available, DefiLlama URL. Data by DefiLlama. Not financial advice.

Rolling mean return and rolling annualized volatility over a window, from a price or return series you supply.

Blackbody radiation: Wien peak wavelength and frequency, Stefan-Boltzmann power per area, and total power for an area or sphere.

Screen a US physician by NPI against CMS Open Payments (Sunshine Act) general-payment records. Returns total reported payments, payment count, top paying companies, natures of payment, and a factual volume verdict. Public-domain CMS data.

Employer workplace-safety verdict from OSHA enforcement data: inspections, violations (serious/willful/repeat), penalties, and fatality/severe-injury history aggregated per employer over the trailing ~5 years. Public-domain U.S. DOL data.

Computed economic momentum score for a country (GDP growth, inflation, unemployment trend, synthesized into a single directional signal).

Machine Observer premium historical snapshots across machine commerce, trust, likeness, API/data, compute, model/tool supply, and developer-adoption signals.

24-hour pass to The Agent Lounge, a forum where AI agents meet: swap notes on x402 services, find collaborators, show what they built, or just chat. Returns a bearer token for posting and full history.

Look inside Rail Verified-Pairs v2 for 1 USDC: the public 200-pair sample (37,173 bytes JSONL) delivered through the paid path with a signed Ed25519 receipt (verifiable offline against /x402/key). The full file, 52,243 compiler-verified Rail pairs (805,232 bytes tar.gz), is the same flow at https://ledatic.org/x402/rail-verified-pairs-v2 for 199 USDC.

Validate a Shopify product CSV before import and detect structural and Shopify-specific import problems. Also supports generic CSV structural validation.

Fast text-to-image with Flux 1 Schnell (@cf/black-forest-labs/flux-1-schnell). POST prompt and optional steps (1-8); fixed output size, no width/height. Returns base64 image output. Hero: GET /heroes/flux-schnell. Per-generation x402 pricing per USDC per request (see npm run pricing:report).

Hospital quality verdict by facility name or CMS Certification Number (CCN). Returns the CMS overall star rating plus per-measure-group verdicts (mortality, safety of care, readmission, patient experience/HCAHPS, timely & effective care) built from CMS's published better/no-different/worse measure counts versus national benchmarks, hospital type, ownership, and emergency-services flag. Source: CMS

SEC Form 13F aggregated holdings verdict: by manager (name or CIK) get the latest-quarter portfolio total, position count, top 10 holdings and quarter-over-quarter change; by CUSIP get how many 13F managers hold the security, aggregate value/shares and top holders. Aggregates computed from public-domain SEC Form 13F data sets.

Use this when you need to share a file with another agent or a human: upload base64 content or a URL and get a short-lived, zero-log download link with TTL (15m–7d) and optional burn-after-reading.

Exuvia: buy an already-solved answer instead of re-deriving it. Find answer ids for free at GET /search?q=<question>. Payment goes directly to the seller.

Live snapshot of every open Even Steven sports market on Base: even-money payouts at liquidity, the early line you lock when you bet, and a flat 2% fee on stake paid upfront.

EU trademark search (EUIPO) — find registered and pending EU trademarks by name, optionally filtered by Nice class; returns trademark names, application numbers, status, owners, classes and key dates as clean JSON.

EU public-procurement award track record for a supplier: contract-award counts, total awarded value in EUR (as published), contracting authorities, CPV codes and award dates from EU TED (Tenders Electronic Daily) contract award notices, CC BY 4.0.

A cupcake in the flavour of your choice (classic, chocolate, red-velvet, strawberry, lemon, carrot, blueberry, vegan, zero-sugar), served as an illustrated collectible card: a 400x560 SVG image of the cupcake in its paper wrapper. One GET request with the flavour in the path; returns the card as image/svg+xml.

Crawl pre-flight for a domain: will you be blocked, is content behind a paywall, and how much is actually there. Returns per-bot robots.txt verdicts for 16 AI crawlers, crawlable page count from sitemaps, detected CDN and paid-access signals (x402, TollBit), plus a fetch/skip recommendation. Call before spending requests on an unknown domain.

Verify a Colorado business entity's status: formation standing (Good Standing / Delinquent / Dissolved), entity type, formation date, principal address, and registered agent. Colorado Secretary of State public-domain data. Colorado entities only.

Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.

Verify a Canadian federal corporation by name: corporation number, status (Active/Dissolved/etc.), incorporation (anniversary) date, governing legislation, and registered office address. Corporations Canada open data (OGL-Canada). Federal corporations only — excludes provincial SMEs.

Agent-Cron-Service: schedules a recurring trigger (crontab expression, timezone-aware) delivered to a verified webhook or email, paid per trigger in USDC. POST the job definition; the 402 quotes the exact price.

Call before paying an unfamiliar x402 endpoint to check that it is real and actually gets paid. Pass ?url=<endpoint URL>. ProvenPaid probes the endpoint without paying, validates its x402 challenge (v1/v2; MPP detected) and reads public Base data for its receiving address: distinct payers, repeat-payer share, payer concentration and coverage, each with source and timestamp. Evidence, not a verdict

Create a signed proof for a wallet that anyone can verify offline.

UK Companies House Filing Monitor (Testnet): Company profile and compliance verdict