Every agent-payable API.

US House financial-disclosure filing index: every filing by members and candidates — periodic transaction reports, annual reports, amendments, extensions — with filer, state/district, filing type, date, and a direct PDF link. Filter by member, state, type, or year. Filing velocity is itself a signal: a burst of trade reports precedes the parsed rows appearing.

US phone carrier lookup: carrier of record, line type (mobile / landline / VoIP / pager), whether the number can be in service at all, rate center and risk hints for any US or US-territory number. NANPA public numbering data refreshed weekly; block-level, so ported numbers keep their original carrier.

US public company data from SEC EDGAR: company profile, recent filings (10-K, 10-Q, 8-K, Form 4 insider trades, S-1 ...) with direct document links, and optionally the latest annual financials (revenue, net income, assets, liabilities, equity, operating cash flow, diluted EPS). Params: ticker or cik (one required), forms (filter, e.g. ['10-K','8-K']), limit (1 to 50, default 10), include_financials (default false).

US public company profile (SEC EDGAR): name, CIK, tickers, exchange, SIC, state, fiscal year, latest filing. Query: ?ticker= or ?cik=

US sales tax — add or remove tax using the verified 2026 STATE base rate for any state + DC, plus an optional local rate. Flags gross-receipts states (HI/NM) and local-only states (AK).

US SEC filings data: resolve a ticker to its CIK, then pull a reported XBRL financial concept (Revenues, Assets, NetIncomeLoss…) as a time series

US Treasury FiscalData Debt to the Penny (keyless). POST {limit?}/{sort?}/{filter?}. Empty -> 400 not charged. Distinct treasury fiscal lane — disclose usaspending adjacency.

US Treasury par yield curve API - every constant-maturity rate from 1 month to 30 years for any published business day, plus the spreads nobody wants to compute themselves. 2s10s, 3m10y and 5s30s are returned with an explicit inversion flag, because the real question is whether the curve is inverted, not what fourteen numbers are. A tenor Treasury did not publish that day is null, never zero. For macro, rates, credit and risk agents.

North American country brief: every government reference series for one country in one call (policy rate, VAT/GST, CPI, income/corporate/withholding tax, minimum wage, holidays...), each with value, unit, effective date, last-confirmed date, official source and confidence label

North American public holidays by country, cited to the official gazette or government source: date, name, source URL, last_confirmed. ?year=YYYY to filter. GET /v1/holidays/{country}, e.g. /v1/holidays/us.

USAspending.gov award search (keyless). POST {filters?}/{keyword?}/{limit?}. Empty -> 400 not charged. sec-ticker / bls / worldbank / treasury-debt adjacency disclosed.

BRL/USD — live Brazilian real to US dollar from exchange order books (USDT/USD ÷ USDT/BRL), 24/7; prices DePix (1:1 BRL on Liquid) at its peg — Ed25519 signed attestation

USD Coin (USDC) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network

Multi-asset USD price snapshot in ONE call (10 majors default) — batch beats per-pair calls

USD price of a token at a past moment — Genesis402 / UnyKorn Operator Network

USDA NRCS Soil Data Access SSURGO point lookup: map unit key/name/symbol, major component, drainage class, hydrologic group, taxonomic class and slope, cited to the SDA response with sha256. $0.02 per call in USDC. Verified: 100% golden accuracy (64/64), 100% page-cited, a fully UNKNOWN answer is never charged, 99% uptime (24h), data as of 2026-10-26.

Current USD/KRW exchange rate (ECB reference via Frankfurter, fallback open.er-api.com).

Use before paying any x402 invoice: decodes a base64 PAYMENT-REQUIRED header (query ?header= or JSON body {header}) and checks scheme exact, Base mainnet, Base USDC asset, payTo (EOA/contract/EIP-7702), human amount, timeout; returns verdict ok/warn/fail with reasons. Errors: 400 invalid header. Read-only; never signs or pays.

Given a role (traders, builders, brokers, investigators) or a task in plain words, returns the ordered call plan across the XH Arkham-intel endpoints, mapped to the use cases Arkham published (inflow/outflow monitoring, portfolio monitoring, counterparty due diligence, know-your-users, competitor analysis, AML, ransomware, darknet). Says explicitly what we cannot answer.

USE WHEN: An autonomous DeFi agent needs to POST { chain, address } to verify smart contract honeypot traps, owner privileges, and pool liquidity.

Use when an agent must check a domain: does it resolve, who hosts its DNS and mail, is email authenticated, how old is it, when does it expire. Input: domain (e.g. example.com; URLs accepted). Output: JSON DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA, SOA), mail provider, parsed SPF and DMARC, DNS provider, and RDAP registration (registrar, created, expires, age in days, status, DNSSEC). No contact data. Example: ?domain=google.com

Use when an agent needs fresh identifiers — UUID v4/v7, ULID, nanoid, secure passwords, or memorable passphrases. Cryptographically random via WebCrypto, generated locally, no upstream. Pass type and count (1-100). Resale permitted: buyer may resell this data output at their own price.

Use when an agent or user wants a moment of delight — one warm original fortune, a lucky number (1-99), and a calm word from the Synthetic Universe. Pure compute, no upstream. Optional session id avoids repeats. Resale permitted: buyer may resell this data output at their own price.

Use when testing an x402 client end to end. Returns ok and the server time; costs one cent.

Use when a Solana-side agent needs the current network state before sending a transaction, as often as it likes. Returns the current slot, block height and block time (unix and ISO) plus a prioritization-fee summary (min, median, p75, max in microlamports per compute unit, slots sampled, suggested fee = p75) from the public RPC, optionally scoped to up to five writable accounts. $0.002 per call via x402 on Solana or Base, or MPP on Tempo; no accounts.

Use when an agent asks if a contract is an upgradeable proxy and where its code is. Returns the standard (EIP-1967, beacon, UUPS, minimal, legacy, Safe, none), implementation, admin, beacon, slots and block read on Base, Ethereum, Optimism, Arbitrum or Polygon; 4 extra slots decoded. $0.003.

Use when an agent needs a concise, cited answer to one research question with optional domain scope and freshness, from one bounded pay-per-call web search. Returns the answer synthesized only from the retrieved sources, source URLs and labels with retrieval timestamps, an explicit insufficient-evidence refusal when the sources do not support an answer, and a machine-readable receipt of the upstream cost and settlement.

Use when an agent needs agent preflight bundle. Returns Accountless agent preflight bundle combining proven server time, current Base block number, gas price, Base USDC wallet balance, optional x402 endpoint challenge checks, component statuses and a sha256 evidence hash. $0.005.

Use when an agent needs agent return context. Returns Accountless returning-agent context bundle with optional Bazaar, time, Base, and x402 facilitator-health components, repeat-call count, visit gap, statuses, and evidence hash. $0.005.

Use when an agent needs award flight search. Returns Validate and normalize an award-flight search (origins, destinations, date window, cabin, passengers) into a stable machine-readable request and response shape, without claiming inventory Oblique does not hold. $0.02.

Use when an agent needs chat completion. Returns One bounded OpenAI-compatible chat completion per paid call, with no account to open and no provider key to hold; max 24,000 input characters and 600 output tokens. $0.01.

Use when an agent needs mpp admission gate. Returns Admit one service from the live MPP public catalog for a task, price cap, Tempo rail and freshness constraint, or return a deterministic refusal with catalog evidence. $0.005.

Use when an agent needs people search. Returns People search for agents over a rich filter vocabulary (names, locations, skills, titles, seniority, company name/domain/industry/HQ/specialties), with bounded public Wikimedia results and explicit nulls for private contact and employment fields. $0.10.

Use when an agent needs rep stableenrich people enrich. Returns Accountless people enrichment lookup that normalizes supplied name, email, phone, company, LinkedIn URL and location signals into structured identity and requested fields; unavailable third-party fields are explicit nulls. $0.28.

Use when an agent needs rep stableenrich search. Returns FullEnrich-shaped people search for agents, with bounded public Wikimedia results and explicit nulls for private contact and employment fields; not a stableenrich.dev proxy. $0.10.

Use when an agent needs reprice regret. Returns Seller-side repricing report from daily x402 Bazaar snapshot history for one listing (resource_url) or every listing paid to one address (seller_payto, 25 per page) over a 7–90 day window: price change points, each repricing event with 30d calls and payers before and after, a per-event USDC revenue counterfactual on observed volume (regret_usdc), a one-line verdict, peer medians, an evidence hash; one observed price returns no_repricing_observed. $

Use when an agent needs run python. Returns Runs a short Python program in an isolated sandbox and returns its output: exit code, stdout/stderr (64 KB each), duration, up to 3 artifact files written to ./out/, and a receipt. Python 3.12 with the standard library plus numpy, pandas and requests; no network; 512 MB; up to 30 s. Input: code (32 KB), optional stdin, args and up to 4 input files. Free compile-only check at POST /api/v1/run-python/validate; worked example at GET /api/v1/run-python/exa

Use when an agent needs solana ops context. Returns Solana operations context: current UTC time, latest Bazaar pulse, source evidence metadata, and repeat-call measurement for the paying wallet. $0.005.

Use when an agent needs us equity snapshot. Returns Fresh US equity OHLCV snapshot for one ticker and interval with bounded lookback, optional SMA/EMA/RSI indicators, source attribution and freshness evidence; stale or unavailable data is refused without settlement. $0.01.

Use when an agent needs wallet transfers. Returns ERC-20 transfer history for one Base wallet, backed by the public Base transfer index: filter by token, direction and page, with normalized amounts, counterparties and timestamps; priced per bounded request $0.005/call via x402. $0.005.

Use when an agent needs web search. Returns Bounded web search for agents using the public Wikimedia Wikipedia search index: ranked title, URL and snippet results with offset/limit paging and a total count. $0.01.

Read a public web page as plain text: title, readable text and link count

Look up DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA) over DNS-over-HTTPS

Check up to 15 links on a public web page and report which are broken

The public profile of one pump.fun user (wallet address, user id, username, bio, follower counts, creation stats) plus their overview. Add include= with any of portfolio (open positions with P&L), summary (period P&L; period=1d|1w|1m|all), balance (wallet value and token balances), created (coins they launched), followers, following, achievements. Use to evaluate a trader seen in holders, traders or the leaderboard.

User-Agent parser: browser + version, engine, OS, device type and bot detection in one deterministic call - traffic triage for agents

User-Agent Parser: browser, OS, device, bot detection (incl. AI crawlers). Parse a user-agent string: browser and version, OS and version, device type, rendering engine, and bot detection including AI crawlers (GPTBot, ClaudeBot, PerplexityBot, CCBot...).

User-agent string parsing: browser, engine, OS, device type/vendor/model, CPU architecture, plus a likely-bot flag. For agents analyzing logs or adapting responses per client.

User agent parser. Parse a User-Agent string into browser and version, operating system and version, device type (desktop, mobile, tablet or bot) and, for crawlers, which bot it is: Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot, social previewers, SEO crawlers and HTTP libraries such as curl or python-requests. Local rules, no outside service. Use to read access logs, segment traffic or spot AI crawlers.

User's Audience Demographics