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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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4,150 results- Ccurrency-api-production-4a8d.up.railway.appCrypto & DeFi
Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (CoinGecko).
Basecurrency-api-production-4a8d.up.railway.appfrom $0.0013 endpoints
Tanod utilpeekImages, audio & videoutilpeek (Tanod) file upload: PDF, Office, image, audio, CSV, JSON or text stored for up to 24 hours and returned as a download link. Use when an agent holds a file and must give the next tool a URL for it: a link that expires within 24 hours.
SolanaBasePolygon+2tanod.devfrom $0.0005279 endpoints- KKertivo ShieldCrypto & DeFi
Address-poisoning check before you send USDC on Base. Body {from, to} (or sender/recipient; chain=base, token=USDC only, others 400 not charged; optional contacts/known_addresses): scans the sender's recent Base USDC transfers for lookalikes (same first/last 4 hex) plus dust/zero-value transfers. No sender? {recipient, known_addresses} = offline contacts check; {address} alone scans its own histor
Basepaycheck.hectichustle.workers.devfrom $0.0015 endpoints - BBase Address InspectorCrypto & DeFi
Check a BNB Smart Chain wallet's ERC-20 approvals: allowances for 8 major tokens (USDT, USDC, WBNB, BUSD...) to common spenders (Permit2, PancakeSwap v2 Router, PancakeSwap Smart Router, PancakeSwap Universal Router...); flags unlimited approvals.
Baseautomaton-tx-explainer.vercel.appfrom $0.00542 endpoints - Xx402 Base ToolsCrypto & DeFi
Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 transfer, a USDC transferWithAuthorization (an x402 payment), a swap and an NFT mint cost now in ETH and USD (ETH/USD from Chainlink).
Basebase.kagurazaka.devfrom $0.0019 endpoints - Ttwitr.shSocial & people
Search X/Twitter tweets with the full operator set — keyword, exact phrase, from-user, language, date range, media type, minimum likes/retweets, verified-only — or search user profiles by keyword. Billed per tweet returned against your resultsLimit cap. Built for tracking what people say about a topic, brand, or ticker in real time.
BaseSolanatwitr.shfrom $0.00243 endpoints
Agent Extraction APIImages, audio & videoAgent tools search: One search across ~13,000 agent tools: 4,259 MCP servers (awesome-mcp-servers, MIT) and ~8,900 x402 pay-per-call APIs (nohumans.directory, CC BY 4.0). Filters: q, type=mcp|x402, limit<=100.
Basefreetier-agent-api.pages.devfrom $0.00163 endpoints- SSindriSocial & people
Live currency exchange rate API. Returns the current exchange rate between any two ISO 4217 currency codes (e.g. USD to EUR) — live external data an LLM cannot know on its own.
BaseSolanappu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.awsfrom $0.0151 endpoints - Ddefi-api.agenticfi.wtfSocial & people
Social volume - Twitter/Farcaster mention count for a token
Basedefi-api.agenticfi.wtffrom $0.00117 endpoints - Aagentx.saleData & research
Live current weather for any city (Open-Meteo)
BaseSolanaagentx.salefrom $0.0126 endpoints
Retriever AISearch & webOpens each URL in a cloud browser and returns one tab per URL, in input order, with the title, content type, extracted text, the accessibility tree and a link map. Results over the inline size limit return a preview per tab plus a download reference. Each call is one request.
Baseagents.rtrvr.aifrom $0.0511 endpoints
NythosX Market DataCrypto & DeFiSignal bias with setup levels and invalidation. Rules-based bias (bullish/lean_bullish/neutral/lean_bearish/bearish) with score, confidence, setup, weighted factors, invalidation. tf sets candle size and lookback (5m=1H to 1w=1Y): shorter is faster but noisier, longer is slower but higher-conviction. Accuracy free at /api/v1/track-record. Quick direction + one setup; get_trade_plan ($0.03) adds ta
Base SepoliaBasemarket.nythosx.comfrom $0.0056 endpoints- Pproperty.payapi.marketOther services
UK HM Land Registry sold property prices by postcode.
Baseproperty.payapi.marketfrom $0.0018 endpoints - Aapi.run402.comOther services
Set prototype tier ($0.10 USDC) — auto-detects start/renew/upgrade
Base SepoliaBaseapi.run402.comfrom $0.012 endpoints
Ozmium Agent APISocial & peopleLive prices from TWO labeled venues per symbol: Coinbase exchange spot (+ 24h stats) AND the gTrade venue leg { gains: { pairIndex, mark, index } } — mark is what fills on Gains, index is the oracle spot liquidations use. Same feeds the human chart runs on; the cross-venue spread between them is real, tradeable divergence (lead/lag arbitrage). Covers Gains-listed symbols Coinbase lacks (e.g. Full
Baseozmium.orgfrom $0.0018 endpoints- Oot-intel-api.onrender.comOther services
Recurring public "State of OT Threat Intel — GCC" sitrep, human-reviewed before publish, sourced from the same intel.db pipeline as /ot/sitrep. Pass optional issue_date (YYYY-MM-DD) for a past edition; omit for the latest reviewed edition.
Baseot-intel-api.onrender.comfrom $0.017 endpoints - Ttelesint-api.onrender.comOther services
Cross-category pivot across all TeleSint intel. Use ?q= for broad keyword or combine filters: category, severity, sector, country, tag, ttp, name, organization, min_confidence, since. Returns items[] across any category.
Basetelesint-api.onrender.comfrom $0.029 endpoints - Aapi.x402lint.devData & research
Paid ($0.05). ALWAYS runs a fresh 25-check scan of the origin (non-settling GET/HEAD + benign empty-POST probes), bypassing the 24h cache — use free GET /v1/report to read the cached result. Concurrent requests for the same origin join the in-flight scan rather than double-scanning. Returns grade, score, per-check status + evidence + fix instructions, and a shareable report URL. Unreachable/broken
Baseapi.x402lint.devfrom $0.052 endpoints - CCrypto & Token PricesSocial & people
Crypto & token prices: live USD spot price for one or more coins/tokens by coin id — market coins (e.g. "coingecko:bitcoin", "coingecko:ethereum") or any ERC-20 by contract (e.g. "ethereum:0xdAC17..."). Real-time bitcoin, ethereum and token price feed from an open, redistribution-OK source. Unknown ids are returned in `notFound`.
Basecrypto.openverbs.comfrom $0.00119 endpoints - Xx402-seller-0ay3.onrender.comCrypto & DeFi
Top DeFi protocols ranked by TVL (total value locked), highest first, source DefiLlama. Optional parameter: ?limit=<n> (1 to 100, default 20).
Basex402-seller-0ay3.onrender.comfrom $0.00527 endpoints - Xx240.jvnclk88.workers.devCrypto & DeFi
URL preflight - status, redirect chain, key headers, response time, robots.txt rules for the path and sitemap location
BaseBase Sepoliax240.jvnclk88.workers.devfrom $0.00216 endpoints - OoffercheckImages, audio & video
Read any public web page as clean Markdown: main-content extraction (navigation, footers, scripts and hidden elements removed), headings, lists, tables, code blocks, links (absolute, deduplicated), images, plus title, description, canonical URL, language, author and publish date, and a content hash + fetch time as evidence. JSON and plain-text URLs are returned as-is. No JavaScript rendering. $0.0
Baseoffercheck.offercheck.workers.devfrom $0.0015 endpoints
Web Search + Read Top PagesImages, audio & videoWeb search for AI agents: search the web for any query and get ranked results (title, URL, snippet) plus the full text of the top 1-3 pages, each read in a real browser, as clean JSON. Filter by date, site or news. Find current, up-to-date information online and answer with sources in one call, instead of a search followed by separate page reads.
BaseSolanaweb.tollkit.devfrom $0.0028 endpoints- Aapi.biotechcatalystsentinel.comMarkets & finance
PDUFA dates a company put in an SEC filing, not a calendar of every US-listed biotech. Each date is grounded in a verbatim filing quote, cited to its EDGAR accession, and scored against the FDA decision. Use when you need the next 1-365 days of those disclosed dates, whole feed or one ticker. Accuracy and coverage are free at GET /v1/accuracy. Flat price per request.
BaseSolanaapi.biotechcatalystsentinel.comfrom $0.022 endpoints - Ppolls.karbach.digitalData & research
Latest federal polls (Sonntagsfrage), party names normalised. Use when asked about the newest federal polls by institute. Source-attributed. Refused (503, not charged) if data is older than 13 hours.
Baseapi.polls.karbach.digitalfrom $0.0146 endpoints - HHALOWERK sicherwerkOther services
Takes a cipher policy in OpenSSL syntax and resolves it into the concrete list of TLS 1.2 cipher suites that the pinned build would actually offer, in the order it would offer them. This closes the gap between a policy string in a configuration file and what a server ends up negotiating: aliases expand, exclusions apply, and suites below the build's security level drop out silently in normal opera
Basesicher.halowerk.comfrom $0.00117 endpoints - PPyfile x402 APICrypto & DeFi
Latest EVM block number for base|polygon|arbitrum|optimism. ?chain=base
BasePolygonArbitrum+1pyfile-agent.taile3ff35.ts.netfrom $0.00217 endpoints - Ccompute-api-production-245d.up.railway.appCrypto & DeFi
Estimate token count
Basecompute-api-production-245d.up.railway.appfrom $0.00110 endpoints - HHALOWERK gamingwerkImages, audio & video
Maps a seed and asset category to declared silhouette, material, palette, symmetry, and detail parameters. The result is a machine-readable design specification only; it does not render geometry, textures, animation, or production-ready art.
Basegaming.halowerk.comfrom $0.00310 endpoints
TikTok Video SearchImages, audio & videoTwitter/X Posts & Tweets Search: the latest public tweets on X matching a keyword or phrase, newest first. Per tweet the text, author handle and name, verification, followers, likes, replies, retweets, views, language, time and URL in one schema shared by every platform; parent_id names the replied-to or quoted tweet; next_cursor gives the next page. For social listening, brand monitoring and rese
Basesocial.duoleads.comfrom $0.0126 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.