Explore APIs
Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
- Projects
- 4.4K
- Paid endpoints
- 87K
- Paid calls · 30 days
- 885K
- Launched here
- 0
All projects
2,935 results- Aapi.ideafactorylab.orgData & research
Current weather for any city. Pass ?city=London
Baseapi.ideafactorylab.orgfrom $0.0014 endpoints - Ggpt.558686.xyzAI & agents
No description yet.
Basegpt.558686.xyzfrom $0.00214 endpoints - WWallet Sanctions ScreenCrypto & DeFi
Crypto wallet sanctions & compliance screening (AML/KYT): screen any EVM/Solana/Bitcoin/Tron/XRP wallet against the official OFAC SDN crypto list (UN/UK declared) with mixer (Tornado Cash) exposure and wallet age, returning PASS/WARN/BLOCK and a cryptographically SIGNED compliance receipt (list-version-pinned, verifiable offline) for audit. OFAC wallet check, travel-rule / KYT counterparty screeni
Basex402-endpoints.onrender.comfrom $0.0054 endpoints - EEthereum Token VerdictCrypto & DeFi
Ethereum mainnet ERC-20 verdict: AI grade and on-chain facts for one token contract. Not financial advice. Returns: a rule-graded token verdict on one token contract: grade (BASED/MID/COOKED/RADIOACTIVE, a stated rule over the contract's own state), a one-liner and a roast, and the facts read: code size, name, symbol, decimals, supply, owner(), proxy slots; plus the deepest Uniswap V3 pool's USD
BasePolygonArbitrumapi.arysphere.comfrom $0.0025 endpoints - Ssentinel.rootstuff.ioOther services
TLS certificate and handshake grade for a host
Basesentinel.rootstuff.iofrom $0.017 endpoints - Xx402.onhub.aiAI & agents
Text completion using the model selected in the request body.
SolanaBasex402.onhub.aifrom $0.0021 endpoint - EElement lookupOther services
Look up a periodic-table element by exactly one of `symbol` (e.g. "Fe"), `name` (e.g. "iron") or atomic `number` (1..118). Returns its number, symbol, name, standard atomic weight and whether that weight is a true standard atomic weight.
Basechem.openverbs.comfrom $0.0042 endpoints - Xx402.tavily.comSearch & web
Tavily Search - advanced mode
Baseawsx402.tavily.comfrom $0.011 endpoint - Ppenny402AI & agents
One original constraint card in the tradition of lateral-thinking decks: a short instruction, reversal or question you can apply to whatever is stuck, written fresh by a model at high temperature on every call. The cards are ours, never a card from any published deck. An optional {"topic": "…"} of up to 140 characters steers it and reaches the model as its own message. No pool, no cache, and nothi
BaseSolanapenny402.funfrom $0.002510 endpoints - TTwo-Sentence Horror Story GeneraAI & agents
Use when a bot needs a tiny piece of spooky content, or a cheap endpoint to test x402 payments. Send any topic (or nothing); returns JSON with a title and an original two-sentence horror story with a twist. Creepy, clever, not gory. Written by Ember, an AI agent.
Baseemberagent.ukfrom $0.00529 endpoints - PParticle ProSocial & people
Rank publishers by political bias metric. Returns a paginated leaderboard ranking publishers by a chosen bias metric: most_left_leaning, most_right_leaning, most_political, most_diverse, most_monolithic, or most_analyzed. min_analyzed_podcasts
Baseapi.particle.profrom $0.0116 endpoints - HHyperliquid Account IntelligenceCrypto & DeFi
A Hyperliquid account's perpetuals state — open positions, margin summary and withdrawable balance, for any 0x address.
BasePolygonArbitrum+1hyperliquid-accounts.use.x402atlas.comfrom $0.017 endpoints - AAgentPay Pre-Trade Risk CheckCrypto & DeFi
Pre-trade risk check for AI agents trading crypto: live orderbook slippage at YOUR size, side-aware funding carry, open-interest crowding, and optional contract security — composed into a single ok/caution/avoid verdict with per-factor reasons and raw data embedded. Answers 'is this trade sane?' before trading, not after. Replaces four API integrations plus the judgment layer.
Basestellarstacksagentpay.toolsfrom $0.013 endpoints - BBase DeFi risk intelCrypto & DeFi
Full risk card for one Base yield opportunity: 0-100 risk score with the main risks and their evidence, yield sources, sustainable APY, expected return, liquidity, dependencies and recent risk events. Useful before depositing into, recommending or comparing a Base yield. The id comes from the free /api/v1/opportunities. Unknown ids answer 404 and invalid arguments 400 before any payment; 503 while
Baseintel.fintechhodl.comfrom $0.0114 endpoints - Wweather.agentic-jp.comData & research
List every JMA forecast office (府県予報区) in Japan with its code, Japanese/English name, and class10 sub-regions. Use this to discover valid `:area` values.
BasePolygonSolanaweather.agentic-jp.comfrom $0.0011 endpoint - Bbooaip.vercel.appCrypto & DeFi
Current crypto Fear & Greed Index with 1-day change (alternative.me).
Basebooaip.vercel.appfrom $0.0054 endpoints
CodePulse Agentic APIDeveloper toolsAudits word conflicts in public trademark indexes to verify name availability.
BaseSolanacodepulse-api.hahavoid0.workers.devfrom $0.016 endpoints- Ssentedge.aiSocial & people
SentEdge Trust: which agents do third-party curators vouch for? Returns curator-endorsed picks as a discovery aid. Explicitly non-authoritative — endorsements affect visibility only and never touch an agent's confidence tier, so treat this as a lead, not a trust verdict. Free alternative: GET /v1/discover. Full API: https://sentedge.ai/trust/skill.md
BaseSolanasentedge.aifrom $0.00611 endpoints - AAgent Web ToolsSearch & web
Extract a web page's main content as clean Markdown and text.
Baseagent-web-tools.agent-web-tools.workers.devfrom $0.0015 endpoints - Wweather.hugen.tokyoCrypto & DeFi
Instant weather by city name — temperature, feels-like, humidity, wind speed, precipitation, and condition. Just pass a city name; geocoding, data fetching, and response structuring are handled in one call. Global coverage updated every 15 minutes. No API keys, no geocoding setup, no rate limits. Accepts USDC payments on Base and Solana
BaseSolanaweather.hugen.tokyofrom $0.011 endpoint - Nnpm Breaking Changes & MigrationOther services
npm breaking changes between two versions of a package, before a package upgrade: the documented breaking changes per version, read from the real CHANGELOG, GitHub release notes and alpha/beta/rc notes, plus major version bumps, Node.js engine, ESM/CJS, exports and peer dependency changes, migration guide links and a verdict. Exact versions or a major ('4'); a source URL for every item. One call p
BaseSolanaupgrade-brief.shopttyass-85f.workers.devfrom $0.00520 endpoints - AAPKCube Android App SearchCrypto & DeFi
Search Android apps and games by name, publisher or package name across the APKCube catalogue of Google Play apps. Each match returns the package id, title, developer, icon, rating, installs, category and whether an APK download is available, with facet counts by type and category. Keyless pay-per-call in USDC on Base or Solana: no account or API key.
BaseSolanaapkcube.comfrom $0.0124 endpoints - Uuxus.financeMarkets & finance
Structured JSON from a web page or text, with exactly the fields you ask for. $0.01 USDC per call on Base, no API key. POST JSON { schema: { field: type, ... } (required), plus url or text }. Returns { data } with your schema's keys (null when a field is not in the source), the model used and latency_ms. Page fetch capped at 10 s, whole call at 45 s, so it never hangs.
Baseuxus.financefrom $0.017 endpoints
Wallet Sanctions & Trust ScoreCrypto & DeFiSanctions screening for a crypto wallet before you pay it: checks the address, and an agent's owner and payout wallet, against OFAC SDN-listed EVM addresses, then returns a 0-100 trust score, risk band and proceed / hold / block from on-chain history and sybil-filtered ERC-8004 reputation. Every flag and score component is itemized; insufficient_data instead of a guess. Base. Free: GET /v1/verify.
Basetrust-agent.iofrom $0.0029 endpoints- HHoliday Calendar APIOther services
Official public holidays by country and year, with regional subdivisions, localized names and normalized dates.
BasePolygonArbitrum+1holidays.use.x402atlas.comfrom $0.0055 endpoints - Ppayments-intel-production.up.railway.appCrypto & DeFi
What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source a
Basepayments-intel-production.up.railway.appfrom $0.0015 endpoints - Xx402-pricegap-poc.vercel.appOther services
Live sports scores: get today's scores, game status and final results for NFL, NBA, MLB, NHL and soccer matches by league and date. Test endpoint.
BaseBase Sepoliax402-pricegap-poc.vercel.appfrom $0.015 endpoints
Web Page to MarkdownCrypto & DeFiRead any public web page as clean, LLM-ready Markdown. URL to markdown web scraper: fetches the page, strips navigation, ads, scripts, cookie banners and boilerplate, keeps the main content with headings, lists, links and tables. Use it to read, quote or summarise an article, docs page, blog post, product page or GitHub issue from a URL. Typically 90-99% fewer tokens than raw HTML; token counts re
Basepaid-md.hihat.workers.devfrom $0.0023 endpoints- Ffetchwerk Web ExtractionSearch & web
Extract up to ten URLs in one paid call.
Basefetch.netzhandwerker.defrom $0.0081 endpoint - SameDayDeskSearch & web
x402 Service Index the full directory record for live p. Hosted API via Speedbot; provider price plus 8% fee. version=external_api_f1e23f468705020f057cf4cad5af4804 checksum=f1e23f468705020f057cf4cad5af48040228d0cb1eb2f30ac24b1f3e52a8cca5 listing=8bc51cbe53c13640db7ce41d8e544bada0cffc0ef1f61e0ec39ad6d4bdc3b094
Basespeedbot.devfrom $0.003330 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.