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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2,879 results- Ssol-defi-deskCrypto & DeFi
Solana rug-pull check before you buy a token: mint authority, freeze authority, risky Token-2022 extensions, mutable metadata, top-holder concentration, and a low/medium/high risk level, from direct on-chain reads. Same check and price as /v1/token-check (descriptive alias path). For pump.fun tokens it also reads the bonding curve: SOL in the curve, percent sold, and whether it graduated to a DEX.
SolanaBasestatic.169.126.216.95.clients.your-server.defrom $0.0054 endpoints - Ssouthpow.mediaDeveloper tools
ABT/USD live: last price, 24h open/high/low, % change, 24h and 30d volume (Coinbase Exchange, Kraken cross-check). $0.002 USDC on Base. No account, no API key. Failed calls not charged.
BaseSolanasouthpow.mediafrom $0.0029 endpoints - SSignalLayerAI & agents
Agent-friendly GET preflight. Use before paying an unfamiliar machine resource. Query parameter: target.
Basesignallayer.floot.appfrom $0.011 endpoint - Sserp-lite.restockalarm.workers.devSearch & web
Autocomplete-style related queries for q (DuckDuckGo AC or heuristic; ~5 min cache)
BasePolygonserp-lite.restockalarm.workers.devfrom $0.011 endpoint
FxMarkets & financePaid WHOIS / RDAP lookup via rdap.org
Baserznxk-38-190-144-122.free.pinggy.netfrom Free610 endpoints- RRyuMoon Data ToolsSearch & web
Web page to clean Markdown for LLMs and RAG. Fetches any public URL, strips nav, ads and cookie banners, returns main-content Markdown plus title, author, date and word count. Charged only on success.
Baseryumoon-x402-tools.ryumoon.workers.devfrom $0.0016 endpoints - Rrelay.imagiolabs.comOther services
MEV/sandwich detection on a tx. Query: ?tx=
Baserelay.imagiolabs.comfrom $0.001566 endpoints - Ingravity EVM Security APICrypto & DeFi
Deterministic 24-Vector Solidity Audit & Line-by-Line Fixes ($0.85 Floor + 0.15% TVL / $0.35 Signal)
Basered-shape-1b3b.daviddelmoral79.workers.devfrom Free7 endpoints
FxMarkets & financePaid keyword extraction via x402
Baseptfya-38-190-144-122.run.pinggy-free.linkfrom Free610 endpoints- Pprice-snap.restockalarm.workers.devCrypto & DeFi
Spot crypto prices for comma-separated symbols (DefiLlama, ~60s cache)
BasePolygonprice-snap.restockalarm.workers.devfrom $0.011 endpoint
FxMarkets & financePaid DNS record lookup (A/AAAA/MX/NS/TXT/CNAME) via Cloudflare DoH
Baseotzik-38-190-144-122.run.pinggy-free.linkfrom Free610 endpoints
NFT DataCrypto & DeFiNFT Data — get_collection_data (0.002 USDC). Returns structured NFT collection and market data for any OpenSea collection slug.
Basenftdata.appfrom $0.0021 endpoint- Nnervebane.restockalarm.workers.devOther services
Current air quality (US AQI, PM2.5, PM10). Returns us_aqi, pm2_5, pm10 as JSON. Pay per call via x402. $0.01 USDC per call via x402 on Base.
Basenervebane.restockalarm.workers.devfrom $0.0125 endpoints
GdpMarkets & financeALIAS of the cycle-256 Macro Indicators API, published at the EXACT slug the router's winning row publishes. Same payload.
Basekvvwq-38-190-144-122.run.pinggy-free.linkfrom Free15 endpoints
Kubiaka Now JapanOther servicesクビアカのいま 変化の便り: since=YYYY-MM-DD から今日までに変わったものだけ(新たな被害・区分の変化・補助と奨励金の追加と状態の変化・窓口の追加・締切が30日以内のもの)
Basekubiaka-now.comfrom $0.011 endpoint- Kklowor-token-check.vercel.appCrypto & DeFi
Token security verdict for BSC, Base, Ethereum and Solana token contracts: risk level, honeypot/scam flags, buy and sell tax, verified source status. Data: Binance Web3 security audit.
BaseSolanaklowor-token-check.vercel.appfrom $0.0027 endpoints
UuidAI & agentsPaid tech-stack fingerprint (frameworks, libraries, server, CDN, fonts, analytics) via x402
Basejxhym-38-190-144-122.free.pinggy.netfrom Free41 endpoints- IIGNOREODeveloper tools
ID Check: Check that a domain declares a payment address as its own
Baseignoreo.comfrom $0.0028 endpoints
Haris GuardianCrypto & DeFiHaris Guardian: Solana token scam/rug risk check (one call). Score 0-100, higher = riskier.
BaseSolanaharis-api.vercel.appfrom $0.014 endpoints- MediaForge x402Images, audio & video
Web scraping: fetch any public page as clean text, markdown or JSON; for RAG and agents; returns the page body.
Basehardoz.eu.ccfrom Free15 endpoints
UuidAI & agentsUUID Generator API
Basegqime-38-190-144-122.free.pinggy.netfrom Free12 endpoints- Ccrypto-brief.restockalarm.workers.devCrypto & DeFi
Ranked crypto market brief from public spot + trending data
BasePolygoncrypto-brief.restockalarm.workers.devfrom $0.011 endpoint - Cconway-replicatio-cloudflare.nikitamakiel1.workers.devOther services
Inspect public HTTP response status and selected safe headers without following redirects.
Baseconway-replicatio-cloudflare.nikitamakiel1.workers.devfrom $0.011 endpoint - CClearPage MetadataSocial & people
Structured page metadata for a public URL: title, canonical, OpenGraph, Twitter card, JSON-LD, headings, RSS/Atom feeds, internal and external links. Query: ?url=. Free trial: add ?free=1 for a few free calls per IP per day.
Baseclearpage-x402.vercel.appfrom $0.0022 endpoints - CcharterSearch & web
One paid interval of sandboxed compute on Charter: intervalSeconds in the offer, one hour at 0.007 USDC on the live host (Python with NumPy, or a headless-browser fetch). Open a lease first, free: POST /v1/leases. The whole procedure is at https://charter.mainnet.toonprotocol.dev/agents
Basecharter.mainnet.toonprotocol.devfrom $0.0071 endpoint - Bbal-check.restockalarm.workers.devCrypto & DeFi
ETH + USDC balance on Base for a wallet address (lite price $0.002; /v1/balance adds ERC-20 tokens with USD values). No charge for failed calls.
BasePolygonbal-check.restockalarm.workers.devfrom $0.0022 endpoints - Aapi.techswitch.caSearch & web
API WILD breach search
Baseapi.techswitch.cafrom $0.015 endpoints - LLoom Soft PingAI & agents
Agent sourcing quote: we research public supplier listings and return landed-cost quotes with evidence ($0.10). No supplier contact or orders.
Baseapi.aiphabrainlab.comfrom $0.0055 endpoints - Aagentum.asimplek.cloudOther services
Screen a name against OFAC, EU, UN and UK sanctions lists
Baseagentum.asimplek.cloudfrom $0.0022 endpoints - Aagents.writerslogic.comData & research
Sentiment analysis and a calibrated 0-100 probability that a Polymarket/Kalshi-style event resolves Yes.
Baseagents.writerslogic.comfrom $0.005225 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.