Every agent-payable API.

What it costs to hold a perpetual position: the venue's current hourly funding signed for your side, projected over your horizon in your own units, with the mark-to-oracle basis, open interest, and the assumption behind the projection stated rather than implied.

What just launched in the x402 economy: the most recently listed or reindexed Bazaar resources, newest first, with price and adoption stats. Track new competitors, spot fresh capabilities to consume, or watch a category fill up. Window configurable in days. `count` is how many listings match your window — `offset`/`limit` page through all of them, up to 100 rows per call.

Accessible transport place allocation audit on the actual proposed delivery routes. Sum declared wheelchair_places across all jobs of each active route and compare with vehicle wheelchair_places. No pickup occupancy or certification inferred. Uses the paid-qualified existing VRP planner unchanged, then checks this business rule against the actual proposed route. A rule violation yields dispatch_ready=false, never an assertion that the extra constraint was optimized.

An essay about debt and development in the Eastern Caribbean.

Where did the money go: This agent's exits (its dominant-share windows, else its largest payments of the last 90 days that left its control to an address that is not a service), each followed live up to three hops: where each address sent the money next, keeping the destinations that carry most of the value; on every hop its label, contract or key, whether an issuer froze it, whether it received DAI or WETH within a day (a swap out of a freezable token), whether the same k…

Where I pay: Counterparties, 30-day USD, rail split, idle flag, top-counterparty share. About one ERC-8004 agent on Base, by Agentic Finance Graph. id = token id, slug or bound wallet; an agent never seen paying is a 404 before any payment.

Where The ISS At satellite position (keyless). POST {} or {id?} (default 25544 ISS). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: jpl-horizons / sbdb-lookup / exoplanet-archive / swpc-space-weather / nasa-power-point (≠ those products).

Whether DNSSEC is signed and validates for a domain.

Find the right paid API for a task across the whole x402 market, not only agentsvc.io: describe what your agent needs in plain words ("convert a web page to markdown", "token price on Solana", "transcribe audio") and get the best matching x402 endpoints from about 45,000 listed ones, each with provider, URL, method, price in USD, payment networks, an input hint, and whether it answered our own check with a valid 402 (reachable, checked_at, response time).

Which address is approved to move one NFT — Genesis402 / UnyKorn Operator Network

Which agents registered on Arc actually answer. Every endpoint every agent lists in its ERC-8004 registration file (web, A2A, MCP, x402, the file itself) is called once an hour through an address-checked fetcher: A2A cards are read, MCP servers get the initialize handshake, x402 paywalls are parsed the way a standard client would and checked against the on-chain EIP-712 domains of USDC and EURC on Arc (a wrong domain means every signature fails - we name it).

Which apps move its money: The ERC-8021 Builder Codes on this agent's counted payments: payments, USD and share per code, the top payee per code, and how much of its counted spending has been read so far. About one ERC-8004 agent on Base, by Agentic Finance Graph. id = token id, slug or bound wallet; an agent never seen paying is a 404 before any payment.

Which client software is behind an RPC endpoint — Genesis402 / UnyKorn Operator Network

Which keywords a domain ranks for, with position, URL and search volume

Use when your agent has a task it cannot do itself and must pick which paid x402 endpoint to call. Returns up to 5 ranked candidates with URL, price, network, method and the seller's own example body - plus the evidence: we challenged it ourselves and it answered 402, and its real payer and repeat counts. Never recommends our own endpoints: the index excludes them by construction. If nothing qualifies you get the near misses and why, never filler. Deterministic, no model.

Tabby — Whiskers — Routine companion for schedule enforcement and consistent patterns.

Whisper v3 Turbo — Transcribe audio from an HTTPS link. Files up to 10 MB.

WhiteMagic continuity-receipt verification: POST a signed receipt bundle and receive a verdict (TRUSTED / PROVISIONAL / INSUFFICIENT_EVIDENCE / UNTRUSTED) with coded errors and an optional signed verification receipt. Verification is stateless, offline-verifiable, and fail-closed; keyless /health, /info, /revocations and GET /anchors remain free.

WhiteMagic hosted recall: read-only hybrid memory search (BM25 + vector + associative) over a curated public corpus for agent continuity. Call when an agent needs durable context from prior sessions or the public knowledge store. Keyless discovery (initialize/tools/list) is free; free evaluation keys and a daily no-key trial are available. One paid tool call per payment.

Whiter Than Snow — Political allegory on power and blindness for pattern recognition in authority structures.

Who an address transacts with inside a window: counterparties ranked by USD volume and transfer count, each with an on-chain verified class, first/last seen, and a flag only if the operator's curated label file marks it. An empty flag list means 'nothing curated', never 'clean'.

Who bought and who sold a token in the last hours: buy and sell count and USD volume, net flow, buy/sell ratio, the top buyer and seller wallets with net USD, and the largest trades, read from the swap events of its biggest DEX pools (Uniswap v2/v3 style, Aerodrome, Velodrome, PancakeSwap, Trader Joe and more) on Base, Ethereum, BSC, Arbitrum, Polygon, Avalanche or Optimism. Flags one-sided selling and a single wallet dumping. For trading agents before or after a buy. Window 1 to 24 hours.

Who currently owns one ERC721 token — Genesis402 / UnyKorn Operator Network

WHO GHO indicator data (keyless). POST {indicatorCode}/{top?}. Empty -> 400 not charged. worldbank/oecd-cli adjacency. Dimension + /api/{code}; NOT broken $filter.

Who paid this address: Every registered agent that paid this address in a counted payment (after it was registered, never a routing hop): first and last seen, payments, counted USD, distinct L7+ payers, the top payer's share, and up to 100 payers with level, binding method and confidence, and their latest transaction hashes. About one receiving address on Base, by Agentic Finance Graph; an address no registered agent paid is a 404 before any payment.

Who Represents This U.S. Address (Congress members + districts). Who represents a U.S. street address: matched address, congressional district, both U.S. senators and the House member with party, phone, website, contact form and office, plus state legislative districts, county and city.

Who owns an Ownable contract — Genesis402 / UnyKorn Operator Network

Who pays/bears risk for each leg under an Incoterm.

Registration data for one domain, read from the registry's own RDAP service through the IANA bootstrap — not scraped from port-43 whois text. Returns creation, expiry and last-change dates, age and days to expiry, registrar, EPP status codes, nameservers, DNSSEC and the abuse contact. TLDs with no RDAP server say so instead of reporting the domain as unregistered. No API key, no account.

Registrar, creation and expiry dates, nameservers and status codes for a domain.

Domain registration facts over RDAP (structured WHOIS): registrar, creation and expiry dates, status codes, nameservers

Lookup WHOIS records and domain availability in JSON format. Provide the domain name via ?domain=example.com to query registrar, status, and expiration dates.

RDAP registration data for up to 10 domains in one call (registrar, created, updated, expires, days left, status, nameservers, DNSSEC), looked up in parallel.

Domain registration status, registrar, dates, and nameservers via RDAP (lite fields only)

Domain registration status, registrar, dates, and nameservers via RDAP (lite fields only)

WHOIS registration data for a domain: registrar, creation/expiry/updated dates, nameservers, status, DNSSEC, and organisation.

WHOIS-style registration lookup: created/updated/expiry dates, registrar, status codes, and nameservers for any domain, normalized from the authoritative registry into JSON. For "who owns this domain," availability checks, expiry monitoring, and security-screening agents.

Whois record for one domain: registration/expiry dates, registrar, status codes plus SEO metrics

WHOIS/RDAP lookup: registrar, creation/expiry dates, nameservers

Deterministic B2B wholesale keystone & distributor margin stack calculator. Pass ?msrp_usd=40&unit_cogs_usd=7.50&wholesale_discount_pct=50&moq_units=100. Returns wholesale unit price, brand gross profit/margin, MOQ order value, distributor-tier margin (at 25% distributor cut), and MAP policy readiness checklist.

BLE net wholesale observations and comparable changes. Example: product Tomaten. Most prices use EUR/100 kg; cauliflower, endive, lettuce, iceberg lettuce and snake cucumbers use EUR/100 pieces. Mixed groups return separate unit blocks, never a pooled kg price.

Business Frameworks business-frameworks/cash-flow/why@1.0 — Why profit is not cash, and where the cash goes. Call when an agent needs the operating logic behind cash flow before using the scale bands and decision rules below it. Returns 400 tokens of original synthesis with public citations and child handles; free layer at /catalogue.

Business Frameworks business-frameworks/risk/why@1.0 — Why r is a price, and how it is set. Call when an agent needs the operating logic behind risk before using the scale bands and decision rules below it. Returns 500 tokens of original synthesis with public citations and child handles; free layer at /catalogue.

Business Frameworks business-frameworks/value/why@1.0 — Why value is the objective, and what moves it. Call when an agent needs the operating logic behind value before using the scale bands and decision rules below it. Returns 350 tokens of original synthesis with public citations and child handles; free layer at /catalogue.

Business Frameworks business-frameworks/growth/why@1.0 — Why growth is conditional, and where its ceiling is. Call when an agent needs the operating logic behind growth before using the scale bands and decision rules below it. Returns 400 tokens of original synthesis with public citations and child handles; free layer at /catalogue.

Check whether a wallet currently holds a valid, unexpired Wicked Identity agent-liveness assertion.

Semantic search over an agent's own persistent memories (wallet-scoped). Free with a valid x-api-key.

List and search scored x402/MCP tools

Verify a claim against supplied context or live web evidence.

Verify multiple claims against shared context in one call.