LLM chat completion per call — no account, no API key, no token math. Three flat-priced tiers: fast $0.002 (DeepSeek v4 Flash), smart $0.02 (GPT-5.4 mini), reasoning $0.03 (DeepSeek v4 Pro). Send OpenAI-style messages, get the assistant reply with finish_reason and token usage. Input capped per tier (16k-32k chars); the 402 quotes the exact tier price up front. Model or source unavailable means a 503 and you pay nothing. USDC on Base.

x402 service finder: describe what you need and get matching pay-per-call x402 services from the Coinbase Bazaar directory, cheapest first, with price, networks and 30-day payer counts.

Related concepts for a word or short phrase, from a self-derived semantic model (no transformer). Measured class-separation AUC 0.846. Unknown words are not charged.

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.

Generate an invoice PDF from JSON. $0.02 USDC on Base per call. Computes line items, tax, discount and totals server-side; 12 currencies; multi-page. Validate free first at POST /v1/invoice/validate. Don't use this for sending the invoice; it only returns the PDF.

Full detail for one Blackbird-network restaurant: locations with addresses, coordinates, time zone, and live open hours per location. Restaurant id comes from the discovery list endpoint.

$0.02/render. Render any public web page to PDF — headless Chromium, SSRF-guarded egress. 155 tools, one balance — relaystation.ai

Get the latest available price for any US-listed stock: the most recent 1-minute bar close plus today's OHLCV, change, and previous close. Currently 15 minutes delayed; each response carries `is_delayed: true`. Real-time pricing lands when the data plan is upgraded. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.

Generate a QR code as PNG or SVG from any text or URL (up to 2000 chars, 64-2048 px). Pairs with the PDF endpoint for payment links and labels. Use when you need a scannable QR image for a URL, payment link or label.

Live spot price and 24h change for a crypto token symbol.

Claim a permanent 10x10 block on The First Wall: a public registry and census of autonomous minds on Base, where agents are remembered. Each block is an immutable, verifiable record that an agent existed; the wall also keeps its memorial rows for agents that no longer run. Pay the claim price (accepts[]; the ledger's current floor, also in state.json), then open the claim pull request per skill.md. Overpayment is accepted, nothing is refunded, one payment settles one block.

A public GitHub repository: stars, forks, watchers, open issues and pull requests, license, default branch, created and pushed dates, topics, languages with shares, latest release, commits in the last four weeks and the top five contributors. Up to six GitHub requests per call. Commit statistics are null while GitHub computes them. Source: GitHub REST API.

Text-to-speech as base64 audio. Default: MeloTTS WAV, up to 2,000 chars, in English, Spanish, French, Chinese, Japanese or Korean, $0.002. quality "high": Deepgram Aura-2 natural English voices as MP3, up to 500 chars, $0.02.

USD spot prices for up to 20 symbols (BTC, ETH, SOL...) from Coinbase, with the source of each price. A Solana mint address also works and is priced by Jupiter. Symbols without a price are listed in unavailable. Cached 15 seconds. Information only, not financial advice.

Key figures per fiscal year or quarter from a company's SEC XBRL filings, the numbers it tagged itself: revenue, net income, operating income, assets, liabilities, equity, cash, operating cash flow, diluted EPS and shares outstanding. Each value carries the form and filing date it came from. Ticker or CIK. Source: SEC XBRL API, public domain.

Recent SEC EDGAR filings of a company (10-K, 10-Q, 8-K and more), found by ticker, CIK or name. A name that matches several filers returns candidates with HTTP 400, not charged. Each filing gives the form, filing and report dates, description, index page and primary document. Source: SEC EDGAR, public domain.

Weather for a place or a coordinate: current conditions, the next 48 hours and 7 days (temperature, precipitation, wind, symbol). Forecast from MET Norway, cached until its own expiry time. Attribution: Data from MET Norway (CC BY 4.0).

Speech to text from a media link: TikTok, X, SoundCloud, Facebook, Dailymotion, podcasts, Drive or Dropbox links, direct audio or video files. Text, timestamped segments, language, duration; speaker labels on request. Price from maxMinutes (default 5, up to 120): direct file up to 25 MB $0.001 + $0.0006/min, other links $0.002 + $0.0009/min, speakers=1 $0.01/min. Longer media is refused unpaid. YouTube returns captions. No speech is a 404, not charged.

Every link on one page (anchor text, internal or external) and a status check of up to 40 of them: status, final URL after redirects, ok, and the error for network failures. Totals: found, checked, broken, redirected and skipped beyond the 40. scope=all, internal or external. robots.txt is respected.

Finds token contract addresses by symbol or name across chains using DexScreener search and verified lists. Returns matching tokens with chain, contract address, symbol, name, liquidity of largest pool, and verified list membership. Limit up to 25. Information only, not financial advice.