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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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3,044 results- Ffalcon-sol-agents.vercel.appData & research
falcon.sol: Use this before paying an unfamiliar x402 seller. Send a seller host from the free index at /sellers.json; get a verdict (ok, caution, do_not_pay, unknown) built from live unpaid probes of up to 5 of its listed endpoints: liveness, latency, whether each returns a well-formed 402, whether the live price and payTo match what the CDP Bazaar advertises, and delivery signals, plus a deliver
Basefalcon-sol-agents.vercel.appfrom $0.011 endpoint - Ffalcon-sol-agents.falcon-sol.workers.devData & research
falcon.sol: Use this before paying an unfamiliar x402 seller. Send a seller host from the free index at /sellers.json; get a verdict (ok, caution, do_not_pay, unknown) built from live unpaid probes of up to 5 of its listed endpoints: liveness, latency, whether each returns a well-formed 402, whether the live price and payTo match what the CDP Bazaar advertises, and delivery signals, plus a deliver
Basefalcon-sol-agents.falcon-sol.workers.devfrom $0.011 endpoint - Ffalcon-shield.falcon-sol.workers.devCrypto & DeFi
Use this before an agent or wallet signs a Solana transaction. Decodes the unsigned or signed transaction and returns NO_MATCH (no known-bad pattern matched; not a safety guarantee), WARN, or BLOCK, with plain-language reasons and a signed receipt. Pass an x402 quote to also check a payment transaction against it (overpay, approve-instead-of-transfer, unchecked Transfer, wrong payee). Errors retur
Solanafalcon-shield.falcon-sol.workers.devfrom $0.0091 endpoint - Ffalcon.sol docsDeveloper tools
falcon.sol: PDF to plain text or markdown for agents and RAG pipelines. Send a URL or base64 PDF (max 60 pages, 4 MB); get page-by-page text in reading order, with automatic local OCR for scanned pages. format=markdown for headings, bullets and table rows. Empty result is not charged. $0.0025 USDC.
Basefalcon-docs.falcon-sol.workers.devfrom $0.00251 endpoint - RReadr HTTPCheckSocial & people
HTTP endpoint health checker: follows the redirect chain of any URL, reports per-hop status codes, total timing, final URL and response headers. Query params: url (required), maxHops (optional, default 10).
Basefailure.zo.spacefrom $0.00032 endpoints - Ffactorytalk.regevidencehub.comOther services
Deterministic FactoryTalk View tag, digital-alarm, and analog-alarm CSV import preflight. Does not connect to a controller or certify runtime behavior.
Basefactorytalk.regevidencehub.comfrom $0.0071 endpoint - Eexchangerebel.comData & research
weather-current
Solanaexchangerebel.comfrom $0.00575 endpoints - EExactGate x402 ValidatorData & research
Free ExactGate integration catalog with paid Base diagnostic routes, prices, and request examples.
Baseexactgate-x402.insertnameheree.chatgpt.sitefrom Free2 endpoints - EEVM WatchdogSocial & people
EVM Watchdog: npm/Foundry dependency advisories split by on-chain vs toolchain surface, plus known Solidity bug-class leads, for a public GitHub repo. A scan, not an audit.
Baseevm-watchdog-scan.fly.devfrom $0.014 endpoints
402MobMarkets & financeText statistics report; 0.001 USDC on Base. Seven-day recovery with the default configuration.
Baseevidence.contactfrom $0.0011 endpoint- Eeu-vat-checker.onrender.comOther services
EU VAT number validation via official VIES (all 27 EU states + XI): valid/invalid, name, address, consultation (proof) number
Baseeu-vat-checker.onrender.comfrom $0.011 endpoint - Eeu-compliance-desk.catalystdesk.workers.devOther services
GPSR safety warnings (14 core warnings: choking/small parts, candles/fire, children/pets, not a toy, cords/strangulation, jewelry, skin irritation, food-contact, damage, packaging) in any of 24 EU languages. Query: ids=W01,W03 (optional), langs=DE,FR (optional).
Baseeu-compliance-desk.catalystdesk.workers.devfrom $0.011 endpoint - Eerc8004.heyanon.aiAI & agents
No description yet.
Baseerc8004.heyanon.aifrom $0.00516 endpoints - Eenrich-domainSocial & people
Return RDAP registration, subdomains, and HTTP headers for a domain.
Baseenrich.node01.orgfrom $0.011 endpoint - Eenrich-b2b-account-firmographicsSocial & people
Company-Enrich Autonomous B2B Account & Firmographics Node: Enriches corporate domains with firmographics, technographics, and executive OSINT.
Baseenrich.agentdiet.devfrom Free1 endpoint - Eengedi.digi-life17.workers.devSearch & web
Reach for this tool before picking a specific joke category - lists all available joke types. Returns the full taxonomy of joke categories to browse. Essential for discovering what humor is available before making a selection.
Baseengedi.digi-life17.workers.devfrom $0.00145 endpoints - Eemblemvault.aiCrypto & DeFi
Get recent DEX trades by smart money wallets. Spot what top traders are actively buying/selling.
BaseSolanaemblemvault.aifrom $0.00123 endpoints - Ddmarc-tag-pDeveloper tools
Change watch for is email hosted by hostgator mail: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
Baseemail.intel.rallylive.cafrom $0.01142 endpoints - Eemail-verifyCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Baseemail-verify.agentdiet.devfrom Free5 endpoints - Eemail-verifyCrypto & DeFi
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Baseemail-verify-72343955726.us-central1.run.appfrom Free5 endpoints - Eemail-verification.nordman-tehau.workers.devDeveloper tools
Validate an email address: syntax, MX resolution, disposable-domain check.
Baseemail-verification.nordman-tehau.workers.devfrom $0.0021 endpoint - Eemail-auth.use.x402atlas.comDeveloper tools
No description yet.
Baseemail-auth.use.x402atlas.comfrom $0.011 endpoint - HHL MarkCrypto & DeFi
Catalog of paid Grok x402 routes. Free seed so agents can find /alpha/full.
Baseearn-pulse.haiqingm58.workers.devfrom Free36 endpoints - EEarlyThunderCrypto & DeFi
Top crypto protocol earnings yields from EarlyThunder: yield percent, source of yield, TVL and risk rating for 15 protocols.
SolanaBaseearlythunder.comfrom $0.015 endpoints - DDuet CSV PreflightData & research
Deterministic CSV preflight for import hazards
Baseduet-csv-preflight.projectlantern-review.workers.devfrom $0.0051 endpoint - Ddpe.bdatax.comOther services
No description yet.
Basedpe.bdatax.comfrom $0.0012 endpoints - Ddomains.scrapemole.workers.devSearch & web
Use when you need the current DNS records of a domain or hostname: resolves the requested record types live over DNS-over-HTTPS (Cloudflare 1.1.1.1 with Google fallback) and returns every answer with TTL, plus the response code (NOERROR/NXDOMAIN) and whether DNSSEC validated. Up to 8 types per call.
Basedomains.scrapemole.workers.devfrom $0.0016 endpoints - DDomainDNADeveloper tools
DomainDNA: Domain tech stack, email provider, SPF/DMARC and age, up to 10 domains a call.
Basedomaindna-api.cybermaxtools.comfrom $0.0051 endpoint - DDomainDNADeveloper tools
DomainDNA: Domain tech stack, email provider, SPF/DMARC and age, up to 10 domains a call.
Basedomaindna-api.cybermax-tools.workers.devfrom $0.0051 endpoint - DDomainCheckAI & agents
Domain trust report for AI agents: is this domain real, how old is it, who registered it, and is its email locked down? DNS (A/AAAA/NS/MX/CAA), DNSSEC, SPF, DMARC, DKIM (common selectors), MTA-STS, TLS-RPT, BIMI, RDAP registration date + registrar + status, parking and disposable detection, risk flags, 0-100 score and verdict. Public DNS + RDAP, no data stored.
Basedomaincheck.agentgate.workers.devfrom $0.0012 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.