Speech-to-text for one audio or video file by URL, using Whisper (turbo) on a GPU. Returns the full transcript, timed segments, ready-made SRT and WebVTT captions, and the detected language; optional translation to English. Files up to 25 MB (about 25 minutes of typical MP3). Useful for captioning videos, indexing podcasts, or reading meetings. Not charged if the file can't be fetched or transcribed.

Find the best x402 API for a task. Describe what you need (for example "remove the background from a photo") and get the matching sellers from the CDP Bazaar ranked by relevance, how many distinct buyers paid them in 30 days, their uptime measured by our monitor every 6 hours, and price. Each result has its price, payers, uptime, median latency and how to call it (method and example input).

Use when you need company financials from SEC filings, earnings or fundamentals of a US company by ticker for the last two years. Do not use for quarterly numbers, real-time prices, non-US companies or filings older than two years. Returns JSON with SEC company financials for a US stock ticker from 10-K filings on SEC EDGAR: annual revenue, net and operating income, diluted EPS, cash flow and the balance sheet for 0.02 USDC per call. Typical response time 300 ms (p95). Category: Data.

Use when you need a domain lookup, whois, dns records or certificate transparency data for osint, security or due diligence. Do not use for historical whois, registrant personal data (redacted by registries) or port and vulnerability scans. Returns JSON with domain intelligence: WHOIS/RDAP registration, DNS records (A, AAAA, MX, NS, TXT, CAA), SPF and DMARC, and TLS certificates from certificate transparency logs for 0.02 USDC per call. Typical response time 4000 ms (p95). Category: Data.

Use when you need to extract text from a pdf, pdf to text or document parsing for an LLM. Do not use for scanned PDFs (no OCR), password-protected files or files over 15 MB. Returns JSON with PDF text extraction: the text of each page (first 20 pages) plus title, author and producer metadata for 0.0025 USDC per page, up to 0.05 USDC per call (clients without upto pay the cap). Asynchronous: the paid call returns a jobId and a free pollUrl; typical job time 10000 ms (p95). Category: Data.

US weather forecast: the next five National Weather Service forecast periods for a latitude and longitude - temperature, wind speed and direction, and the plain-language forecast.

badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT-RESPONSE receipt and the transaction hash. Nothing else is sold; sibling endpoints under /402 misbehave on purpose.

Solana pump.fun bonding-curve buyer bursts from the last 1-240 minutes, on pump.fun tokens 5 min to 4 h old that show curve progress. Each burst has SOL inflow, curve position, token age and, on sampled bursts, its anatomy (same-slot bundles, scripted sizes, top-3 share, top holders). Outcomes are scored at graduation or 20 minutes. Data rewritten every 20 s; data older than 120 s is refused with a 503 and not charged.

Fact-checking and claim verification API for AI agents. Verify whether a cited source supports a claim; check statistics, dates, units and populations in research reports before publication. Separate web research returns a verdict, linked evidence and sources. Source verification is model-assessed, not guaranteed correct. POST /v2/verify; x402 v2 on Base; 0.20 USDC. No signup or API key.

Use when you need email validation, to verify email addresses or validate email syntax and MX records before sending or signup. Do not use for confirming that the mailbox itself exists (no SMTP probe is done) or sending email. Returns JSON with email verification of one address: syntax, domain MX records, disposable, free and role-account flags, SPF and DMARC, and a verdict on whether the domain can receive mail for 0.005 USDC per call. Typical response time 800 ms (p95). Category: Data.

Use when you need a wallet balance, token balances or the ERC20 balance of an address on Base, read live from the chain. Do not use for ethereum mainnet or other chains, NFTs, transaction history or USD values. Returns JSON with the wallet balance of an address on Base: ETH and ERC20 token balances read on-chain in one block, 21 major tokens plus any you list for 0.003 USDC per call. Typical response time 1200 ms (p95). Category: Data.

Use when you need timezone conversion between time zones, the current time in a zone or a utc offset with daylight saving. Do not use for places given only by city or address without an IANA zone name, or dates before 1970. Returns JSON converting a date and time between IANA time zones with daylight saving rules, with UTC offsets, abbreviations and the current time in each zone, from the IANA tz database for 0.003 USDC per call. Typical response time 500 ms (p95). Category: Data.

Use when you need speech to text transcription or translation of an audio file at a public URL. Do not use for audio over 10 MB or speaker labels. Returns JSON with a Whisper transcription of an audio file: text, timed segments and language, or an English translation for 0.005 USDC per megabyte, up to 0.05 USDC per call (clients without upto pay the cap). Asynchronous: the paid call returns a jobId and a free pollUrl; typical job time 20000 ms (p95). Category: Media.

Use when you need news articles or headlines from the last 72 hours about a topic, company or person. Do not use for full article text, paywalled sources, non-English coverage or news older than 72 hours. Returns JSON with recent news articles matching keywords: headline, URL, source, publish time, authors, tone, image and the people and organizations named, from GDELT for 0.008 USDC per call. Typical response time 600 ms (p95). Category: Search.

Use when you need a random number generator, dice rolls, a coin flip, a uuid or random bytes that no one can predict. Do not use for verifiable on-chain randomness (VRF) or reproducible seeded sequences. Returns JSON with cryptographically secure random values: integers in a range, dice rolls, coin flips, UUIDs or hex bytes, from the Workers Web Crypto CSPRNG for 0.005 USDC per call. Typical response time 500 ms (p95). Category: Infrastructure.

Use when you need to summarize text such as an article, notes or a transcript into a short summary. Do not use for uRLs or PDFs (extract the text first), exact quotes or citations. Returns JSON with a concise summary of the plain text you send (up to 20,000 characters): one short paragraph and key bullet points, written by IBM Granite 4.0 Micro on Workers AI for 0.008 USDC per call. Typical response time 8000 ms (p95). Category: Inference.

Use when you need an llm chat completion for summaries, extraction or classification from a cheap open model. Do not use for frontier models, tool calling or streaming. Returns JSON with a chat completion from IBM Granite 4.0 Micro on Workers AI, with token usage for 0.002 USDC per thousand tokens, up to 0.03 USDC per call (clients without upto pay the cap). Asynchronous: the paid call returns a jobId and a free pollUrl; typical job time 8000 ms (p95). Category: Inference.

Use when you need a weather forecast, the current weather, temperature, rain or wind for the next hours or days at given coordinates. Do not use for historical weather, severe weather alerts or places given only by name (geocode first). Returns JSON with the weather forecast for a latitude and longitude: hourly temperature, rain and precipitation, wind, humidity and cloud cover for the next days, from MET Norway for 0.003 USDC per call. Typical response time 1500 ms (p95). Category: Data.

Use when you need crypto news or crypto market news headlines about a token or the market from recent articles. Do not use for prices, full article text, social media posts or news older than 72 hours. Returns JSON with the latest crypto news headlines from the last 72 hours (title, link, source, time, tone, people and organizations) about bitcoin, ethereum and blockchain news, from the GDELT news graph for 0.005 USDC per call. Typical response time 1500 ms (p95). Category: Search.

Use when you need a crypto token price or market data for a Base token, quoted from on-chain liquidity. Do not use for tokens that only trade off Base or on other DEXs (Aerodrome is not read), price history or OHLC. Returns JSON with the USD price of a token on Base computed on-chain from its deepest Uniswap v3 pool against USDC or WETH, with pool, fee tier and depth for 0.002 USDC per call. Typical response time 1200 ms (p95). Category: Trading.