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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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2,935 results- 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- 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 - Aapi.zendiq.aiCrypto & DeFi
Solana swap triage for AI agents. Returns a Safe / Protect / Refuse verdict for a proposed swap: token risk screening, sandwich-attack exposure, and the priority fee and Jito tip to use. Call it before signing a swap. Advisory only: builds no transaction and never handles keys. Pay in USDC; network fees are sponsored. Full contract: GET /v1/agent. Terms: https://zendiq.ai/agents/terms/
Solanaapi.zendiq.aifrom $0.012 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
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 - WWallets Demo WeatherCrypto & DeFi
Real-time current weather conditions for a city or location, including temperature, humidity, precipitation, wind, and a human-readable condition.
Base Sepoliawallets-demo-seller-server.calebgcarithers.workers.devfrom $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
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.