Explore APIs
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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- Paid calls · 30 days
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2,776 results- 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 - Aapi.agentfeeds.jpCrypto & DeFi
Freshness heartbeat only (list date, address count, fetched_at) for both Japan MOF and OFAC sanctions lists. No addresses. Cheapest polling entry point for change-detection loops.
Baseapi.agentfeeds.jpfrom $0.00114 endpoints - FFrontera SignalOther services
Use to check what common building materials cost on the shelf in the Rio Grande Valley (McAllen, Mission, Edinburg): 2x4 and 2x6 studs, OSB, drywall, concrete mix, CMU block, rebar, shingles, underlayment, housewrap, insulation, paint, doors, deck screws. Dated prices at big box stores and a local yard, checked twice a week, for estimating or checking a bid. Not a quote. Example: "What does a shee
Basefronterasignal.comfrom $0.0114 endpoints - HHyperliquid Prediction MarketsCrypto & DeFi
The catalog of Hyperliquid prediction-market outcomes and their metadata.
BasePolygonArbitrum+1hyperliquid-predict.use.x402atlas.comfrom $0.0052 endpoints - EEmail ValidateSocial & people
Validate an email address using syntax, MX, disposable-domain, role-account, and domain-risk checks. Returns structured validation data for agent workflows, signup hygiene, and lead-quality checks. Does not guarantee that an individual mailbox exists.
Baseagent-vending-production.up.railway.appfrom $0.00115 endpoints - Bbtcnode.ukOther services
Mempool congestion: pending tx, size, usage — flat $0.001 per call, USDC on Base, no signup.
Basebtcnode.ukfrom $0.00116 endpoints - SSettledData & research
Price: $0.002 in USDC on Base. Signed check of an x402 endpoint before you pay it: who really pays it on Base (settlements and unique payers over 30 days), a fresh unpaid probe (cached ≤5 min) with status, latency and the parsed quote, payability, paying agents' reports, the seller's claim, the scout's last real purchase (settlement transaction and whether it matched the listing), a quality score
Basesettled.toolsfrom $0.0026 endpoints - Oopenworker.etips.meCrypto & DeFi
Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built for x402 agents that need on-chain facts without managing RPC keys or node infrastructure. Each call returns a deterministic JSON payload with a chain-specific block number at snapsh
Baseopenworker.etips.mefrom $0.0113 endpoints - VedettaSocial & people
Recent analyst desk posts as a stream (?since_id=&asset=&limit=): cached, instant, half a cent. Poll it cheaply; escalate to a live read when something moves. Descriptive research, not financial advice.
Basevedetta.dethboy.comfrom $0.00517 endpoints - Llibrary.proofivy.comCrypto & DeFi
Get list of all available CryptoSlate content URLs with their last updated dates
Baselibrary.proofivy.comfrom $0.015 endpoints - Aah-package-checkSocial & people
Given an open-source package (PyPI, npm, Go, Cargo, Maven, NuGet or RubyGems) and optionally a version, returns its known vulnerabilities from OSV.dev (IDs, CVE aliases, severity, fixed-in versions), license, latest version, publish date and deprecation status from deps.dev, plus a one-line recommendation. For coding agents to call before adding or upgrading a dependency. Not charged if the packag
Basex402.agentharbor.agencyfrom $0.00310 endpoints - Aagent-briefs.walletstarter.workers.devCrypto & DeFi
Daily JSON bundles for agents: BTC/ETH volatility regime, crypto news with top x402 sellers, Brazil business calendar, x402 agent economy, Base chain gas, US macro (CPI, unemployment, SOFR). This route serves the btc-eth-vol-regime bundle.
Baseagent-briefs.walletstarter.workers.devfrom $0.016 endpoints - AAgoranomeCrypto & DeFi
x402 ping and test payment: can my wallet pay an x402 API? Pay a fraction of a cent in USDC on Base and get a signed receipt back, proof that your wallet and x402 client complete a real paid call end to end, plus what the Lab knows about your wallet and which tool to try next. Use when an agent needs a cheap test payment endpoint before buying anything bigger.
Baseapi.agoranome.comfrom $0.00114 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.