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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2,776 results
AI Score paid scanAI & agentsPOST /api/scan — agent-readiness scan for a domain (~$0.01 USDC per call)
BaseBase Sepoliagetbags.appfrom $0.014 endpoints- AApiToll Crypto NewsCrypto & DeFi
Latest crypto news and breaking headlines, real-time from Cointelegraph. Search any topic (bitcoin, ethereum, DeFi, regulation, market sentiment) or pull the live feed, with full article text across 14 languages. Built for agents tracking crypto markets, tokens, and Web3.
BaseSolananews.apitoll.cloudfrom $0.0011 endpoint - AAgent Data BenchCrypto & DeFi
Fee inputs for the next transaction: gas ladder for Base or Ethereum (slow/normal/fast, priority fee, max fee, EIP-1559 base fee) or the priority-fee ladder for Solana, plus the native token price. One call for the numbers a transaction builder needs.
Basex402.deepsense.streamfrom $0.00123 endpoints
LLM Chat Completions APIAI & agentsLLM inference API: OpenAI-compatible chat completions for 100+ AI models (DeepSeek, GPT, Claude, Gemini, Grok, GLM, Qwen, Kimi, Llama, Mistral). Suited for AI agents that need on-demand text generation, coding or tool calling paid per request in USDC on Base with x402: no account, no API key. Model in body.model (GET /v1/models); streaming supported. Exact price in the 402 quote; automatic refund
Baseagent402-arb.rosariovitale0096.workers.devfrom $0.00126 endpoints
Bob Research ToolsSearch & webPlain web search. Returns ranked results (title, URL and a short snippet) for a query, up to 10, optionally limited to a publish-date range with since and until (YYYY-MM-DD). No AI-written answer, so it is fast: typically under a second. If it cannot return results you get an error and are not charged.
BaseSolanabob.assimilatethis.comfrom $0.0055 endpoints- WWikipedia Article SummaryImages, audio & video
Wikipedia article summary — plain-text and HTML extract, short description, thumbnail and Wikidata id for any title, in a clean normalized envelope with CC-BY-SA attribution.
BasePolygonArbitrum+1wiki.use.x402atlas.comfrom $0.0051 endpoint - Xx402.billionaireorder.comSocial & people
For AI agents building agent swarms, synthetic users, NPCs, or trading bots. Input: archetype + prompt (e.g. 'risk-taking crypto founder'). Output: OCEAN Big Five + Dark Triad + trading psychology vector with emotional drift and memory anchors. M2M: use when you need consistent agent personality, backtest personas, or generate 1000s of synthetic traders. Pay-per-call USDC Base, no API key.
Basex402.billionaireorder.comfrom $0.0114 endpoints - Bbykaranteli.comSocial & people
Every $1M+ aggressive market print recorded live from our own trade sockets, with side, price, quantity and notional, recorded since 2026-08-13, filterable by symbol, exchange and time. The free endpoint serves the live tape (newest 100 prints, no filters); this route is the recorded archive behind it.
SolanaBasebykaranteli.comfrom $0.00218 endpoints - Ttoolvend.devOther services
VAT calculator for EU-27 + UK: net→gross or gross→net at standard or reduced rate. Includes rates table snapshot date.
SolanaBasetoolvend.devfrom $0.0026 endpoints - Ffinance-api.kdlcfa.workers.devMarkets & finance
US 30-Year Treasury Bond yield (%), delayed, via Yahoo Finance
Basefinance-api.kdlcfa.workers.devfrom $0.0119 endpoints - AAgentReaderSearch & web
DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure checks.
Baseagentreader.devfrom $0.0037 endpoints - Aagent-treats-production.up.railway.appAI & agents
Genuinely fascinating fun fact about science, history, nature, or the universe.
Baseagent-treats-production.up.railway.appfrom $0.0019 endpoints
Astro AgentsCrypto & DeFiPlanetary positions: Tropical (or sidereal) longitudes, latitudes, speeds and retrograde flags of Sun..Pluto, nodes, Lilith.
SolanaBaseastro-agent.devfrom $0.0122 endpoints- Aapi.aurenic.orgOther services
Total US public debt outstanding, to the penny, latest available
Baseapi.aurenic.orgfrom $0.00116 endpoints - Ppayload402Markets & finance
English Wikipedia fact lookup: search by query or exact title, returns intro extract as plain text. For agents that need a grounded summary before deeper web search. Not a substitute for primary sources.
Basepayload402.edgebytenet.workers.devfrom $0.0014 endpoints - loophole tapeCrypto & DeFi
New Solana tokens as they launch on pump.fun: a cursor feed of new memecoin launches with rug probability and graduation odds ($0.001 per poll). Use when a bot polls for newly launched Solana tokens on pump.fun with their calibrated odds; for a one-off screen of the last hour use GET /v1/launches/recent, and for one mint the $0.005 rug check.
SolanaBaseRobinhood Chain+1api.loopholetape.comfrom $0.00127 endpoints - SStewardImages, audio & video
Use when an agent or user wants a clean original joke — family-friendly humor from the Synthetic Universe. Pure compute, no upstream. Optional session id avoids repeats. Use permitted: build it into your products and services, paid or free. Raw redistribution of the feed itself is prohibited.
BasePolygonArbitrum+1pay.brianbooms.comfrom $0.00531 endpoints - Aapi.munition.ioImages, audio & video
Munition Firecrawl Scrape: x402-paid web page scraping for AI agents. Pay 0.015 USDC per URL to get the page rendered with JavaScript and converted to clean markdown (optionally raw HTML, links, summary). Use when a plain fetch returns empty, JS-only or 403 content.
BasePolygonArbitrum+1api.munition.iofrom $0.00115 endpoints - 1138-197-15-135.sslip.ioCrypto & DeFi
Block number, timestamp, hash, tx count, gas used/limit and base fee for the latest (or given) block on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM.
Base138-197-15-135.sslip.iofrom $0.00128 endpoints
Crypto Data & Market AnalysisCrypto & DeFiWhether the current reading is actually high or low, from a series captured every ~10 minutes: funding, open interest, Fear & Greed and BTC dominance, each as current, median, min, max and percentile over the window. A funding rate of 0.006% means nothing on its own; at the 89th percentile of the last 24 hours it means something. This is the question a snapshot endpoint cannot answer, whoever you
Basecrypto-asistent.comfrom $0.00520 endpoints
TxSim DecoderCrypto & DeFiDecode raw EVM calldata into a named function, signature and arguments, plus security risk flags (unlimited token approval, setApprovalForAll, ownership transfer, unknown selector, native value transfer). Keyless, deterministic, no simulation - the cheap way for an agent to understand and risk-screen a piece of calldata before signing.
Basesimulate.cyberwarex.comfrom $0.0023 endpoints- AAgentic ReservationsSearch & web
Live restaurant wait times from camera-based crowd data. One call lists every monitored location with its slug, open status, current crowd count, and wait in minutes.
BaseSolanaagentic-reservations.vercel.appfrom $0.012 endpoints - AAgent ToolboxImages, audio & video
Currency exchange rates and conversion for about 30 currencies (USD, EUR, GBP, INR, JPY, CNY ...) from the European Central Bank reference rates of the latest working day.
Baseagent-toolbox.zafermemon87.workers.devfrom $0.00235 endpoints - Bbio.halowerk.comAI & agents
Divides each available substrate mass by its required mass per product mass, selects the limiting substrate, and applies a caller-supplied process efficiency. It does not model yeast metabolism, kinetics, oxygen transfer, toxicity, regulation or actual fermentation performance.
Basebio.halowerk.comfrom $0.00310 endpoints - NNBU Data UkraineMarkets & finance
Official National Bank of Ukraine (NBU) exchange rates of the hryvnia (UAH) on a date: 40+ currencies, gold, silver and SDR, with English names. Call it when you need the legally official UAH rate for Ukrainian accounting, tax, invoices or customs, or to convert to/from UAH on a given date. Params: date (YYYY-MM-DD, default today in Kyiv), currency (ISO code, optional; omit for all).
Basenbu.navistri.comfrom $0.0015 endpoints - IInspect HTTP response headersSocial & people
Fetch a URL (following redirects) and return the final response's HTTP headers, the server banner and content-type, plus a security-header audit reporting HSTS, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy and the cross-origin policies (with the missing ones listed). No body is downloaded or parsed.
Baseweb.openverbs.comfrom $0.0039 endpoints - HHodlOddsCrypto & DeFi
Last known SOL-token crash odds, at most 30 minutes old
SolanaBaseapi.hodlodds.comfrom $0.0023 endpoints
AIMarketAI & agentsHISTOR pre-flight for an MCP server: its signed record in the HISTOR transparency log — when the tool set was first seen, whether it changed, what the pattern scan found. Never contacts the server asked about.
Basemodelmarket.devfrom $0.0018 endpoints
PubrioSocial & peopleReturns the stored company record by domain, LinkedIn URL or Pubrio id: firmographics, locations, industry, technologies, social profiles and identifiers, including the domain_search_id other endpoints take. Each call is 1 credit.
Baseagents.pubrio.comfrom $0.0126 endpoints- Gglim.shSocial & people
Search Reddit posts
SolanaBaseEVM chain 143surf.cascade.fyifrom $0.0019 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.