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The total US public debt outstanding to the penny — the headline national-debt figure — split into debt held by the public and intragovernmental holdings, with the latest value, prior business day, day-over-day change, and recent history. No ticker needed. Updates each business day. Sourced from the US Treasury (FiscalData). Pass `?limit=` for more history (default 30, max 250). From x402stock

Use when you need historical exchange rates, a historical FX rate series, forex history or a currency trend. Do not use for rates older than 90 days, live quotes or crypto (one ECB rate per business day). Returns JSON with historical exchange rates: 90 days of daily ECB euro reference rates (free at ecb.europa.eu) for up to 10 currencies, rebased to any base as cross rates, with min, max and perce

OpenAI-compatible chat completion on 71 models: name one in `model` (llama-3.1-8b-instruct, l3-8b-lunaris-v1, mistral-small-24b-instruct-2501, gemma-3-4b-it, qwen2.5-7b-instruct, gpt-oss-20b, phi-4, gemma-3-12b-it, qwen3.5-9b, gemma-3-27b-it, gpt-oss-120b and 59 more) and the 402 prices that model per request; served by DeepInfra, Venice AI, NEAR AI Cloud and Taifoon's own GPU (nvidia/NVIDIA-Nemot

Latest available Türkiye central government debt plus a comparable annual history from the World Bank World Development Indicators API, with source, lag and revision caveats. Purpose: Give an autonomous agent a normalized, directly sourced Türkiye central government debt series without forcing it to understand World Bank indicator codes or response shapes. 24-hour freshness target; missing evidenc

What changed since your last read: one page of PreReason's change events after a cursor. A briefing's state label, a tracked release, and, for the companies you name (?companies=, at most 200), newer figures, a situation turning on or filed news (?kinds= narrows it). Each event says what changed, when it happened, when PreReason knew it and where to fetch it, never a value. With no cursor it answe

Solana priority fee estimates via x402: micro-lamports per compute unit for global, Jupiter, Raydium or custom account keys. Lookback 1-150 slots (default 50), 20-second cache. Network fee evidence, not a wallet check; no transaction inclusion guarantee.

Latest Base block: number, timestamp and hash. The cheapest call on the service — useful as a liveness and connectivity check.

Fact-check numbers in Korean finance text: every checkable number (rates, KTB yields, FX, listed-company revenue and profit, % vs %p, 조/억/만 units) marked MATCH or MISMATCH against the official value with date and source (ECOS, KEXIM, DART). Numbers with no source stay unverified.

Skim: clean reader — URL to agent-ready markdown + metadata, ~4x smaller than raw HTML

Live current weather conditions for any city, sourced from Open-Meteo

Syntax, Domain, MX-Einträge, Wegwerf-Anbieter, Rollenkonto, Freemailer, Tippfehler-Vorschlag und Zustellwahrscheinlichkeit. Optional SMTP-Handshake für Postfachprüfung.

One combined reading for agent loops: AI provider health from public status pages, x402 facilitator reachability on the XRP Ledger and recent changes in our record. Returns storm (boolean), level, one reason, asOf and sources with timestamps. Additive measured fields: observed_payment_success (15m/…

Top 3 x402 resources by heuristic calls-vs-unique-payers pattern score from the CDP Bazaar and PayAI catalogs, with host, resource, unique_payers, calls and wash_risk (a heuristic score, not a finding about any seller). No input. Full scored list: /v1/listing-quality ($0.01).

Check one email address or domain. Report common address syntax, MX or null MX and A/AAAA fallback, SPF, exact-domain DMARC and optional caller-supplied DKIM selector records, and a small known disposable-domain list. DNS failures remain unknown. Does not verify a mailbox or predict delivery.

Search Hacker News for startup news, YC news, Show HN launches, and founder discussion through the Algolia HN index. Send a query, then filter stories, comments, or polls by author, minimum points, and ISO-8601 date range; sort by relevance or newest first. Returns titles, authors, points, comment counts, timestamps, URLs, and matching text. Use it as a startup news search API, YC news search, Sho

Crypto news that moves markets, already triaged: each six-hour window Messy Virgo dedupes the headlines, keeps the items that matter, scores their market impact and adds a news score, verdict and summary. Feed current events into market analysis or a trading agent without scraping feeds. Refreshed four times a day.

Individual arena strategy signal

Crypto market data: a current USD price snapshot for BTC, ETH and SOL, or one coin via symbol= (bad symbol: 400), for quick market context. JSON per asset: priceUsd, change24hPct, momentum; plus overall momentum, sentiment, direction, avgChange24hPct, asOf. Prices from Coinbase Exchange, CoinGecko fallback (source field). Labels are fixed rules on 24h change, not a forecast and not financial advic

List all blockchain networks supported by this API's security scanning — Ethereum, BSC, Polygon, Arbitrum, Base, Optimism, Avalanche, Fantom, Solana, and 20+ chains with chain IDs and names. Accepts USDC payments on Base and Solana

Importance-ranked crypto headlines with per-article source links and publish times, plus a sentiment-scored market brief. Regenerated hourly; meta carries the snapshot's age and a fresh/stale verdict.

Validators grouped by withdrawal address, or blocks grouped by the graffiti they carried. PulseChain (chain id 369). $0.003 USDC per call.

Tenjin's tool router. Send a turn's bounded conversation packet, or a one-line query, and get which pay-per-call x402 service fits the step, if any, with its spec to fill and pay yourself. Quotes $0.003 and charges $0.001 per answer from a completed routing gate; an answer made without one settles at $0. batch-settlement only. Agent guide: https://tenjin.sh/llms.txt

Korean exchange prices (Upbit, Bithumb) for a single token in KRW

Honeypot check, half a cent: can this token actually be sold? Simulated buy+sell verdict, buy/sell/transfer tax, mint authority, ownership renounced, transfer-pausable, blacklist — the raw flags, one source, no fusion. Base, Ethereum, BSC, Arbitrum, Polygon, Optimism, Avalanche. Cheapest token safety check before you trade; upgrade to /api/evmtoken ($0.015) for the fused CLEAR/CAUTION/AVOID verdic

Estimate whether text (or a web page's text) is AI-written using a trained classifier: about 78% accurate on a held-out benchmark (not a guarantee). Uncertain results suggest a rerun on a longer section (300+ words); tell phrases are only a secondary 'possible AI influence' signal.

Search onchain DEX pools and token, by contract address, name, or token symbol.

Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.

Read a single XBRL financial concept for a company (by CIK or ticker) from its as-filed statements. Give the concept's XBRL tag (e.g. Revenues, NetIncomeLoss, Assets, EarningsPerShareDiluted) and optionally the taxonomy (default us-gaap, also dei). Returns the label and, per unit (USD, shares), recent datapoints with period end, value, fiscal year/period, form, filing date and accession. Bounded,

Palmyr: POST /social/twitter/unfollow

Convert a byte count to a human-readable size (B/KB/MB/GB/TB/PB, 1024 steps, 2 decimals). Input: bytes.