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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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2,879 results- VVeridictum LegalAI & agents
Verify one legal citation. Body: {"citation": "<string>"} - full ("Miranda v. Arizona, 384 U.S. 436 (1966)") or bare ("384 U.S. 436"); the case name enables mismatch detection. Deterministic: regex plus cache / local corpus / CourtListener, no LLM in the path. status=verified (name confirmed), suspicious (reporter resolves to a DIFFERENT case - the fabrication signature), or not_found. verified=fa
BaseSolanaveridictum.legalfrom $0.012 endpoints - VVENZIA LAB Company ResearchMarkets & finance
VENZIA LAB company research and company intelligence for AI agents. Get a cited JSON report from public sources: overview, key facts, company financials when available, risks, opportunities, confidence and limitations. Use for business research, preliminary due diligence, risk analysis and competitor research of one company per call. Sources may include Wikipedia, web abstracts, company websites a
Basevenzia-complet-ezip.replit.appfrom $0.011 endpoint - Ttoken-api.x402hub.xyzCrypto & DeFi
No description yet.
Basetoken-api.x402hub.xyzfrom $0.0011 endpoint - SSato HubCrypto & DeFi
Daily Sato Score history for one Sato Hub listing: score, tier components, GitHub stars, status and verification state per day, with the dates the score moved (genuine changes vs our own method revisions marked). Captured daily since 2026-06-12; not reconstructable. The current catalog and the daily score line stay free. Priced per daily point returned: $0.005 for up to 90 days, +$0.001 per day be
BaseSolanasatohub.aifrom $0.0052 endpoints - RRandom ChoiceCrypto & DeFi
Cryptographically secure random picker for 2-100 JSON choices. Use for low-stakes one-off random or weighted selection, unbiased tie-breaking, and sampling. Returns the selected value and index, request ID, and weight totals for audit logs. $0.001 USDC per paid request. Not for stable assignments, gambling, security tokens, or consequential decisions; outcomes are not provably fair.
Baserandom.preflightstack.comfrom $0.0011 endpoint - Oodood.comAI & agents
POST a URL; get clean, LLM-ready content (Markdown/text/JSON) plus a prompt-injection risk verdict (clean | suspicious | flagged). A defense layer for agents and RAG pipelines, not a guarantee.
Baseodood.comfrom $0.0041 endpoint - AAgent News HubSearch & web
Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window and result limit using the published schema. Returns headlines, a short abstract, first-report time, reporting-source counts and citations. Coverage is limited to the managed feed set; source count is not independent confirmation. Third-party article bodies are never returned.
Basenews.halowerk.comfrom $0.0021 endpoint - LLatAm Official FXMarkets & finance
Official central-bank exchange rate for one Latin American currency against USD (BRL PTAX, ARS BCRA, COP TRM, PEN BCRP, MXN FIX), with source, date and staleness flag.
Baselatam-fx.latamfx.workers.devfrom $0.0021 endpoint
CostPulseOther servicesCross-region AWS price comparison. Find the cheapest region for any service in one API call.
BaseSolanacostpulse.waltsoft.netfrom $0.011 endpoint- Aavt-x402.ttsempelis.workers.devImages, audio & video
International phone number validation and normalization (libphonenumber): validity, country, E.164, national/international formats and line type.
Baseavt-x402.ttsempelis.workers.devfrom $0.011 endpoint - IInfoharmoni Radar whoCrypto & DeFi
Is this x402 seller real? One seller's report card before you pay them: what they sell, price, rank of all sellers, rivals, and from the chain who actually pays it on Base: payer wallets, how concentrated they are, how many came back on 2 or more days, and how many of its payers are wide samplers that paid 30+ sellers (not shoppers). Dated, with the evidence behind each fact. $0.001 a call. Refusa
BaseSolanaausrine-who.onrender.comfrom $0.0011 endpoint - PPython Code ValidatorOther services
Check Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.
Baseapi.statemind.aifrom $0.011 endpoint - Aapi.stackgoai.comSocial & people
Extract structured public business contact information from any public business website. Returns company name, emails, phone numbers, social profiles, postal addresses, and contact pages as structured JSON. $0.01 per request via x402 on Base.
Baseapi.stackgoai.comfrom $0.011 endpoint - Aaiact-api.comOther services
No description yet.
Baseaiact-api.comfrom $0.0011 endpoint - Aagentproof-murex.vercel.appAI & agents
JSON repair for AI agents - fix malformed JSON and return structured output.
Baseagentproof-murex.vercel.appfrom $0.0012 endpoints - Aagentfive.ai domain saleAI & agents
Purchase dossier for the domain agentfive.ai: fixed price US$5,000,000 USD, every payment route (USDC on Base, escrow, marketplace), the transfer procedure and the seller's attestation. Use when an agent or its operator wants to buy this domain name.
Baseagentfive.aifrom $0.011 endpoint - AAtinamos JSON Validate / RepairAI & agents
Deterministic JSON validation and conservative repair for AI-agent payloads. Repairs unquoted object keys, single-quoted strings, trailing commas, Markdown code fences, UTF-8 BOMs and JSON-compatible Python literals, including nested or repeated defects. No LLM or invented data; every applied transformation is reported.
Baseagent.atinamos.co.ukfrom $0.0052 endpoints - Aagent-margin-router-production.up.railway.appCrypto & DeFi
Agent Margin Router – Gas Fees: Live EIP-1559 gas fees (slow/standard/fast tiers) plus USD cost per transaction type (transfer, ERC-20 transfer, swap, NFT mint) for Base, Ethereum, Arbitrum, Optimism and Polygon. Aggregated from public RPC nodes – no API key. Pay per call with USDC or USDT on Base via x402. 3 free calls per wallet.
Baseagent-margin-router-production.up.railway.appfrom $0.0051 endpoint - 110x402Other services
Run ONE named check against a response you paste
BaseSolana10x402.comfrom $0.0041 endpoint - NNodely SearchSearch & web
Web search: one query fanned out to 4 search engines (alpha, gamma, delta, epsilon) via SearXNG, merged and ranked; JSON, NDJSON or SSE stream.
BaseEVM chain 5042algorand+1x402.api.nodely.iofrom $0.0092 endpoints - BBase Wallet ProfileSocial & people
Analyze a Base wallet address for on-chain wallet due diligence, transaction-history research, and risk triage. Returns native balance, transaction and token-transfer counts, first and last activity, contract status, a heuristic activity score, and risk flags as JSON. Not identity verification or a guarantee that an address is safe.
Basex402-wallet-profile-api-production.up.railway.appfrom $0.011 endpoint - TTrust CheckCrypto & DeFi
Is this address safe to send funds to on Base? Checks scam blacklists, address poisoning (look-alikes of your recent counterparties via ?from=), token contracts, burn and never-used addresses. Returns a verdict with reasons.
Basetrust-check.gm-tools.workers.devfrom $0.0022 endpoints - Ssearch-toll-production.up.railway.appSearch & web
Web search. Returns top 5 results with title and URL. Example: /search?q=latest+AI+news
Basesearch-toll-production.up.railway.appfrom $0.011 endpoint - AAcme Listings (demo)AI & agents
Demo of Stilebase pay-per-page for AI agents: rental listings in Springfield with price, bedrooms and what's special about each home. Test USDC on Base Sepolia.
Basedemo.stilebase.comfrom $0.011 endpoint - BBase Honeypot & Rug CheckCrypto & DeFi
Is this Base token safe to buy? Fast token safety check for sniper bots: mint, blacklist, pause and fee-change powers, owner, proxy, liquidity, token age, deployer rug history. Verdict + score. No sell simulation (use /verdict for the honeypot test).
BaseSolanacrypto.theboredlab.comfrom $0.0052 endpoints - Aapi.suverse.ioData & research
SuVerse GovHub — pay-per-call government API gateway
SolanaBaseapi.suverse.iofrom $0.0052 endpoints - ZZeroWorker Security APIAI & agents
Prioritize up to 50 CVEs in one request using FIRST EPSS, CISA KEV, and known ransomware signals. Returns deterministic risk scores, urgency tiers, exploitation signals, vendor/product context, and remediation metadata as machine-readable JSON. Built for security automation and AI agents. No account or API key required. $0.01 per successful request via x402. Invalid input, no-signal results, and t
Basezeroworker-security-api.zeroworker-lab.workers.devfrom $0.011 endpoint - Xx402stockCrypto & DeFi
Single-call snapshot of a ticker's current state: last quote, last trade, today's OHLC + volume + VWAP, previous-day OHLC, today's change vs previous close. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.
Basex402stock.pay.zeroclick.iofrom $0.013 endpoints
x402 Identity HubAI & agentsCheck whether an ENS identity name for an AI agent, API or MCP server is available on x402 Identity Hub (*.402bot.eth, *.402api.eth, *.402mcp.eth). Returns availability, the mint fee and where to register.
Basex402id-availability.dmpay.workers.devfrom $0.0011 endpoint- Xx402-used-car-quickcheck-production.up.railway.appAI & agents
Evaluate a used car before purchase. Compares the asking price with up to 50 current dealer listings in Canada or the U.S., matched by year, make, model, mileage and optional trim/location. Returns robust median and quartile pricing, deal rating, confidence, sample size and risk flags. Use for fast used-car price checks.
BaseSolanax402-used-car-quickcheck-production.up.railway.appfrom $0.011 endpoint
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.