eip155:42161
2984 resources accept payment on this network.
Fetch one public tweet on X (Twitter) by id: text, created time, langu
Fetch one public tweet on X (Twitter) by id: text, created time, language, conversation id, engagement metrics (likes, retweets, replies, quotes, bookmarks, impressions) and the author's username, name and verification.
Pay a Bitrefill invoice in USDC via x402 to buy gift cards, eSIMs & mo
Pay a Bitrefill invoice in USDC via x402 to buy gift cards, eSIMs & mobile top-ups across 180+ countries.
What history exists before you pay for it: how many markets we track,
What history exists before you pay for it: how many markets we track, which asset classes, and the range covered. The cheap probe that tells an agent whether the paid series is worth buying
Full transcript of any YouTube video by video id or URL: captions/subt
Full transcript of any YouTube video by video id or URL: captions/subtitles as clean plain text plus timestamped segments, the video's chapter markers, and every caption track it offers so an agent can pick a language and re-fetch. YouTube transcript, video to text, captions extraction, subtitle download, closed captions, speech to text, multilingual, asr and authored tracks. No API key.
Audit a URL's HTTP security headers over a single body-free (HEAD) req
Audit a URL's HTTP security headers over a single body-free (HEAD) request. Grades Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy, flags information-leak headers (Server, X-Powered-By), and returns the parsed values plus advisory warnings. Clean JSON for security and pentest automation.
Email authentication posture check: parses SPF, DMARC and DKIM plus MX
Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.
Live grid carbon intensity, deterministic
Live grid carbon intensity, deterministic. Answers "how clean is the grid right now", "gCO2 per kWh in Germany", "cleanest hour to run a job today". Current intensity + forward curve (to 48h) + cleanest and dirtiest slots, from NESO (GB national + 14 DNO regions) and energy-charts/Fraunhofer ISE (DE FR NL BE AT ES IT NO). No LLM, no key. Pair with /api/energy/compute-window for full job scheduling.
Everything Agent402 knows about one x402 seller origin, in one read: i
Everything Agent402 knows about one x402 seller origin, in one read: identity and crawl history, the catalog with the provenance of every price (live-402 or manifest, when it was read, whether it is stale or disagrees with the seller's own declaration), advertised wallets against the wallets that were actually paid (own chain evidence, inherited wallets, shared claims), settlement evidence per source (our Base leaderboard, Coinbase Bazaar, Solana SPL credits, MPP transfers), the router's own.
Run a DexL agent autonomously: it plans, discovers services, pays for
Run a DexL agent autonomously: it plans, discovers services, pays for them, executes and verifies - paid for once with x402
QuokkaPix image agent unlock for image-standard
QuokkaPix image agent unlock for image-standard. Media stays local on the user's device.
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 39 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, and agent standing (ERC-8004 registration, ERC-7710 delegation validity with revocation proof). A verifiable boolean, never raw balances. Up to 10 conditions per pay-per-call request. Pay in USDC on Base, Polygon, Arbitrum, or Solana.
DexL AI agent economy leaderboard - enriched with on-chain stats
DexL AI agent economy leaderboard - enriched with on-chain stats
https://x402
https://x402.openwebninja.com/realtime-local-and-maps-data/local-rank-tracker/ranking-at-coordinate
Crypto token price in USD, EUR and more — real-time spot prices for on
Crypto token price in USD, EUR and more — real-time spot prices for one or many coins by CoinGecko id (bitcoin, ethereum, solana).
WHOIS domain lookup — raw registry text with registrar, nameservers, l
WHOIS domain lookup — raw registry text with registrar, nameservers, lifecycle dates and status, plus the responding server. Use the RDAP endpoint when you need parsed structured data.
Live current weather conditions for any city, sourced from Open-Meteo
Live current weather conditions for any city, sourced from Open-Meteo
Real-time web search (via Exa) — ranked results with title, URL, publi
Real-time web search (via Exa) — ranked results with title, URL, published date, author, and relevance score for a query
LLM inference proxy - send an OpenAI-format chat/completions request a
LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_schema). No API key needed; pay per call via x402. Input capped at 16k chars, output at 4096 tokens.
Supported perpetual-futures trading pairs — the list of symbols (BTCUS
Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope.
What a USDC transfer actually costs on Base, Polygon, Arbitrum, Ethere
What a USDC transfer actually costs on Base, Polygon, Arbitrum, Ethereum and XDC, measured rather than assumed: gas units simulated per chain against live prices and fresh chain heads, plus the rollup L1 data fee where it applies. Every figure ships with its inputs and the block it was read at, so you can recompute it. Cheapest first; a chain that cannot be measured is excluded, never estimated.
Trace an HTTP redirect chain to its final destination without download
Trace an HTTP redirect chain to its final destination without downloading page bodies. Returns every hop (URL + status), the final URL, and safety warnings — link-safety grounding for agents before they visit or cite a URL. Clean JSON.
Spot Check
Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made to the host, so the answer is as fresh as our last round and no fresher, and sa…