Every agent-payable API.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Soft-fork deployment and activation status from chainquery's independent full node. Bitcoin Core getdeploymentinfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Active RPC commands and server state from chainquery's independent full node. Bitcoin Core getrpcinfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Status of manually added peer nodes from chainquery's independent full node. Bitcoin Core getaddednodeinfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. All known chain tips with height and branch status from chainquery's independent full node. Bitcoin Core getchaintips.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Per-peer connection details for every node connected to chainquery's independent full node. Bitcoin Core getpeerinfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current Bitcoin (BTC) chain state from chainquery's independent full node: height, best block hash, difficulty, sync progress, on-disk size. Bitcoin Core getblockchaininfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Node network state from chainquery's independent full node: version, subversion, connections, relay fee. Bitcoin Core getnetworkinfo.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Node uptime in seconds from chainquery's independent full node. Bitcoin Core uptime.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current block height of the chain tip from chainquery's independent full node. Bitcoin Core getblockcount.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Number of peer connections from chainquery's independent full node. Bitcoin Core getconnectioncount.

Compute keccak256/sha256, a 4-byte function selector, an event topic0, or an ENS namehash/labelhash from a string or hex input.

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extract emails, extract urls, extract phone numbers, extract hashtags, find emails in text, find phone numbers, parse contacts, extract crypto addresses, extract ethereum addresses, regex extraction, text entity extractor. Extract emails, URLs, phone numbers, hashtags, mentions, IP addresses, ethereum and bitcoin addresses from any text. Returns categorized arrays of found items. For AI agents parsing emails, scraping documents, content moderation.

extract keywords, keyword extraction, keyword extractor, text keywords, find keywords, top keywords, keyword finder, SEO keywords, content keywords, automatic keyword extraction, document keywords, keyword analysis. Extract significant keywords from any English or multilingual text. Returns top N keywords ranked by frequency and importance with stopwords filtered. For AI agents doing SEO analysis, content tagging, document categorization, search query expansion, topic modeling.

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Delta of the MCP registry since a daily baseline: added, removed, and changed (score/status) servers — the cheap habit endpoint for repeat callers.

The most-recent N HIP-4 outcome-side rows (≤5000). Priced per row ($0.000025 premium); served live.

Archive coverage for a coin's liquidations over a window (≤7 days): which archived hours hold liquidations and where the gaps are. Warms the cache for everyone after. Priced floor ($0.001) + $0.05 per archived hour examined.

Derived two-sided open interest for a HIP-4 outcome market, per minute (circulating-supply times mark, summed over both sides). Priced per row ($0.000025 premium); served live. Takes the integer outcome id (e.g. 100).

Memory Retrieve — an agent-callable memory retrieve service, payable over x402 (USDC on Base). Provided via lore-prod.vercel.app.

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Distributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.

rss feed parser / rss parser / parse rss feed / rss feed parse / parse rss / rss to json / atom feed parser / parse atom feed / RSS 2.0 parser / Atom 1.0 parser / xml feed parser / feed parser API / rss feed reader / feed aggregator. Parse any RSS 2.0 or Atom feed URL. Returns channel/feed metadata (title, link, description, language) and items array. Use ?url=https://hnrss.org/frontpage&limit=20. For AI agents monitoring news, blogs, content feeds.

Telegram channel analytics and statistics: subscribers and growth, average post views, reach, engagement and engagement rate (ERR/ERR24), plus mentions and forwards. A quick stats and health check of any public channel; individual metrics are populated where the channel exposes them.

Telegram engagement analytics: engagement rate (ER), engagement rate by reach (ERR) and 24-hour reach engagement (ERR24) over time. Benchmark audience activity and channel performance.

Reference data for the Telegram analytics API: countries, categories and languages used for filters and targeting.

Telegram content analytics and data extraction: pull structured entities from a channel's recent posts, links, @mentions, #hashtags, $cashtags, emails, phone numbers and bot commands. Contacts, tickers or outbound links at scale. Formatting-level entities, not semantic NER.

Telegram search and discovery: find public Telegram channels, groups and posts by keyword. Discover sources, communities, competitors or content on any topic.

Telegram post analytics: a single post with its statistics over time, views, forwards and reactions. Measure how a specific post performed.

Telegram audience analytics: subscriber growth chart for a channel, track audience growth or decline over time (day/week/month/year).

Telegram reach analytics: average post reach chart for a channel, how many people typical posts reach over time.

Telegram sentiment analysis, raw inputs: recent posts and reactions for a channel, group or topic to run your own mood or opinion analysis. For a ready LLM verdict use /v1/data/sentiment/llm.

Telegram channel analytics and profile data: title, description, subscribers, category, country, language, links and verified flag. Vet a channel, enrich a dataset, or look up channel data in one call.

Permit2 + EIP-2612 Gas Sponsoring Demo — forces the gasless Permit2 path so a fresh wallet holding USDC but ZERO ETH can complete the flow. The CDP facilitator submits the EIP-2612 permit and the Permit2 transfer atomically in a single transaction via x402ExactPermit2Proxy.settleWithPermit. The response carries the on-chain tx hash + Basescan link so callers can confirm the permit + transfer landed together. Pay $0.001 USDC on Base mainnet.

Skill Marketplace — list active skill listings with prices across all three.ws agents. Filter by skill name to find the cheapest provider for a given capability. Returns price atomics, chain, currency, trial offer, and time-pass terms.

Retrieves a filtered list of supported assets with their metadata including address, symbol, name, decimals, and network information.

Decode an EVM signature request (EIP-712 typed data, Permit/Permit2, or ERC-20 approve calldata) into a structured intent: what token, which spender, how much, until when, plus risk_flags and an action_hint. Deterministic, no LLM. Answers an agent's question 'what am I about to sign?'

Deep model-vs-market breakdown for one weather market — Full divergence picture for a single weather market: model probability with the discretized model distribution, divergence history from stored signals, a half-Kelly sizing hint, and explicit risk notes (including model labeling). Find slugs via /v1/edge/weather-markets.

Degree-days, load signal, and renewables indexes for a US ISO region — Daily heating/cooling degree-days (°F-days), a normalized peak-load signal, and solar/wind generation indexes computed from load-weighted city forecasts for CAISO, ERCOT, PJM, MISO, SPP, NYISO, or ISONE, with extreme-risk flags.

Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call was paid. Use it to verify your x402 client end to end before spending on data endpoints.

Summarized depth, spread, and 24h volume profile for one market — Execution-quality summary per venue: depth within 1c/5c of the touch, spread in cents, and an hourly 24h volume profile. Pass notional_usd for a slippage estimate. Derived analytics only — raw order books are never mirrored.

Why is my x402 service not listed — or listed but never paid? Send your endpoint URL; we fetch your 402 envelope, run the exact SDK validation the CDP facilitator runs, check catalog presence, and return per-check pass/fail with concrete fix hints. Includes two undocumented traps we verified against the live facilitator: a buyer must echo your bazaar extension into the settle payload, and a description over 500 characters makes the facilitator reject every payment. Deterministic, no LLM.

🎰 LuckyMint: Mint 10 reward tokens at once with chances for refunds and jackpots!

Cid Bafkreif7emht2vvddt4wzwrqs6bbfrv4prhzgykhaxsd6kkdcomqz3j3i4 — an agent-callable cid bafkreif7emht2vvddt4wzwrqs6bbfrv4prhzgykhaxsd6kkdcomqz3j3i4 service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.01 USD per call.

0.05 USDC on base-sepolia