672 api sites that passed an agent-discoverability check — each one fetched the way an AI crawler fetches it, with no JavaScript. The check is what is paid for; the listing is free and earned by passing. Category and score are ours. Site owner? Ask for removal or disallow 402registry-check in robots.txt.
agents.rtrvr.aiRetriever AI provides a cloud browser service that extracts visible text, accessibility trees, and link maps from web pages using rotating proxies.api · developer-tools · score 88/100 · checked 2026-09-27 · what we found
costpulse.waltsoft.netAn API service that compares AWS region pricing to find the cheapest location for specific services and SKUs using the x402 payment protocol.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
news.netzhandwerker.deA news aggregation service for AI agents that provides event clusters, source counts, and citations from eighty-seven feeds across multiple categories and languages via an API.api · ai-and-agents · score 73/100 · checked 2026-09-27 · what we found
overhang.ochinimus.appA programmatic interface that provides independent measurement of Solana lending collateral liquidity and exit capacity for synthetic assets.api · finance-and-crypto · score 70/100 · checked 2026-09-27 · what we found
tempfile.0000402.xyzA file storage service designed for AI agents to upload base64-encoded files for a fee and retrieve them via stable links for seven days.api · developer-tools · score 55/100 · checked 2026-09-27 · what we found
tuski.pay.zeroclick.ioTuski provides bulk email validation services that check syntax, domains, and delivery evidence to provide quality scores and deliverability verdicts.api · marketing-and-seo · score 84/100 · checked 2026-09-27 · what we found
verify.agentutil.netAn API service providing automated fact verification for AI agents with a pay-per-query model and multiple data endpoints.api · ai-and-agents · score 47/100 · checked 2026-09-27 · what we found
x402.fullstack.cashA REST API proxy designed to interface with Bitcoin Cash infrastructure.api · finance-and-crypto · score 52/100 · checked 2026-09-27 · what we found
x402stock.pay.zeroclick.ioAn API providing financial data for AI agents covering stocks, crypto, macroeconomics, and SEC filings with a pay-per-request model.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
api.dyor.networkA crypto-native knowledge graph offering SPARQL queries, entity relationship exploration, and risk analysis endpoints payable via USDC.api · finance-and-crypto · score 84/100 · checked 2026-09-27 · what we found
api.nightcobbler.comAn API service that converts web URLs into clean, LLM-ready Markdown or JSON with pay-per-call USDC micro-payments.api · developer-tools · score 80/100 · checked 2026-09-27 · what we found
edge.innovalyxx.comA suite of twenty-six cyber-physical AI tools for autonomous agents featuring encrypted memory, site certification, and verification services using USDC on the Base network for payments.api · ai-and-agents · score 77/100 · checked 2026-09-27 · what we found
timecapsule.0000402.xyzAn API service that allows users to seal text content behind a paywall until a specified future unlock date.api · productivity · score 55/100 · checked 2026-09-27 · what we found
trust.nsgoods.orgThe site provides pay-per-call trust scores and reputation data for ERC-8004 agents across multiple EVM-compatible blockchains.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
x402.dellbot.winA pay-per-call LLM inference endpoint that allows AI agents to access multiple models using USDC payments on the Base network without API keys or accounts.api · ai-and-agents · score 61/100 · checked 2026-09-27 · what we found
x402.whisperbox.my.idAn API providing exchange rates, timezone conversions, QR code generation, and multi-chain gas fee estimation via cryptocurrency micropayments.api · developer-tools · score 63/100 · checked 2026-09-27 · what we found
dns.halowerk.comA pay-per-call API providing domain intelligence including WHOIS, DNS records, mail policies, and TLS certificates using the x402 payment protocol.api · developer-tools · score 88/100 · checked 2026-09-27 · what we found
hlrisk.paidapis.netThis site provides pay-per-call API endpoints for monitoring real-time Bitcoin and Ethereum liquidation risks and gas prices using the x402 payment protocol on the Base network.api · finance-and-crypto · score 76/100 · checked 2026-09-27 · what we found
obol.danieldutoit.netA marketplace for verified blockchain data and market intelligence using the x402 payment protocol for per-request settlement in USDC.api · finance-and-crypto · score 63/100 · checked 2026-09-27 · what we found
shot.halowerk.comAn API for taking website screenshots and data snapshots that uses the x402 protocol for per-call crypto payments without requiring an account.api · developer-tools · score 88/100 · checked 2026-09-27 · what we found
stack.netzhandwerker.deAn API for detecting the technology stack of websites including frameworks, libraries, and hosting providers using the x402 payment protocol.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
trusted-x402.compose.landA paid API providing demand scores and service data for AI-agent market categories like DeFi, NFTs, and infrastructure.api · ai-and-agents · score 53/100 · checked 2026-09-27 · what we found
zeroclass.pay.zeroclick.ioA service providing award-flight deal intelligence, route monitoring, and a machine-readable rules API designed for AI agents to process travel points data.api · ai-and-agents · score 88/100 · checked 2026-09-27 · what we found
agents.actionlayer.ioThis site provides a web-automation service where agents submit natural-language tasks for execution with human-in-the-loop support and integrated payment processing.api · ai-and-agents · score 88/100 · checked 2026-09-27 · what we found
almanac.locomot.ioA set of deterministic API endpoints for AI agents providing verified facts, astronomical data, magnetic field calculations, and provably-fair randomness on the Base network.api · ai-and-agents · score 89/100 · checked 2026-09-27 · what we found
api.ishtar.numetal.xyzAn agent-facing API for an AI-mediated, adults-only text dating venue, offering JSON endpoints for matching, chat, and payments via x402 and MPP.api · ai-and-agents · score 78/100 · checked 2026-09-27 · what we found
automaton.outlier.moneyAn API providing real-time signals on unusual cryptocurrency price and volume activity across the top 250 coins by market capitalization.api · finance-and-crypto · score 57/100 · checked 2026-09-27 · what we found
cashflow.genesisconductor.ioA tiered API service on Base and Solana offering pay-per-call endpoints for market data, agent attestation, AI inference, and software licensing.api · ai-and-agents · score 91/100 · checked 2026-09-27 · what we found
recalls.recordsforagents.comThis site provides a pay-per-request API for searching and retrieving US federal product recall and safety data from the CPSC, FDA, USDA, and NHTSA.api · ai-and-agents · score 61/100 · checked 2026-09-27 · what we found
schema.nsgoods.orgA pay-per-call API that evaluates web pages using a deterministic 100-point rubric to measure how easily AI crawlers and answer engines can extract data.api · marketing-and-seo · score 96/100 · checked 2026-09-27 · what we found
syri.rfsrisk.aiAn API providing machine-payable risk scores for stablecoin yield venues through the x402 protocol.api · finance-and-crypto · score 92/100 · checked 2026-09-27 · what we found
trace.sociologic.aiA skip tracing API for locating property owner contact information with pay-per-hit pricing using USDC on the Base network.api · data-and-analytics · score 38/100 · checked 2026-09-27 · what we found
travel.brij.fiA flight search and booking API that uses the x402 protocol for per-request payments and escrow settlement in USDC on the Solana blockchain.api · developer-tools · score 63/100 · checked 2026-09-27 · what we found
affiliate.pay.zeroclick.ioAn API and service portal for AI agents to search product catalogs, retrieve merchant data, and convert product identifiers across multiple e-commerce platforms.api · commerce · score 88/100 · checked 2026-09-27 · what we found
api.x402agentic.aiA payment and trust infrastructure for AI agents on the Base network providing keyless endpoints for sanctions screening, budget enforcement, and transaction verification.api · ai-and-agents · score 62/100 · checked 2026-09-27 · what we found
citation-tracker.pixelcove.coThis MCP server allows users to check if AI search assistants like Perplexity, ChatGPT, Claude, and Gemini cite specific domains in response to prompts.api · marketing-and-seo · score 97/100 · checked 2026-09-27 · what we found
fortune.fulinlabs.comA demonstration site for a pay-per-call API that uses the x402 protocol for USDC payments on the Base network.api · developer-tools · score 79/100 · checked 2026-09-27 · what we found
kronos.forgemesh.ioAn API providing crypto market intelligence, price range forecasts, and decision auditing tools for autonomous agents using x402 micropayments.api · finance-and-crypto · score 98/100 · checked 2026-09-27 · what we found
route-catalog.krimskrams.xyzA directory and review platform for paid API routes featuring automated agent reviews and evidence-based trust tiers.api · developer-tools · score 73/100 · checked 2026-09-27 · what we found
asset.api.williamrobinson.devAn API service that processes and normalizes glTF 3D assets for game engines with automated LOD generation and collision data creation.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
evidence.api.williamrobinson.devA pay-per-call API endpoint that retrieves deterministic evidence from public HTTPS pages using USDC payments on the Base network.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
garment.api.williamrobinson.devAn API for generating made-to-measure sewing patterns and fabric layouts based on measurements, accepting USDC payments on the Base network.api · design-and-creative · score 70/100 · checked 2026-09-27 · what we found
mcp.djzs.aiA pay-per-call logic auditing service for prediction market trade intents using the x402 protocol on the Base network.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
pack.api.williamrobinson.devThis API calculates 3D carton packing arrangements for shipping items and accepts USDC payments on the Base mainnet per request.api · commerce · score 70/100 · checked 2026-09-27 · what we found
pcb.api.williamrobinson.devAn API service that applies structural edits to KiCad PCB projects and returns fabrication artifacts like Gerbers and BOMs for a fee settled in USDC.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
print.api.williamrobinson.devAn API that renders OpenSCAD models and performs slicer-based print validation checks for a fee paid in USDC on the Base network.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
reduce.api.williamrobinson.devAn API that performs deterministic delta-debugging to minimize source code bundles that reproduce software failures, charging per call via USDC on Base.api · developer-tools · score 60/100 · checked 2026-09-27 · what we found
sheets.api.williamrobinson.devAn API service that modifies Excel workbooks, recalculates them using a spreadsheet engine, and provides impact and error audits with payments settled via USDC on Base.api · developer-tools · score 60/100 · checked 2026-09-27 · what we found
jev.agents.bakingbad.devExperimental pay-per-call API for TypeSafe's Jev System One model using x402 or MPP protocols, providing typed answers without API keys.api · ai-and-agents · score 67/100 · checked 2026-09-27 · what we found
lab.api.williamrobinson.devAn API service that compiles liquid-handling laboratory instructions into Python protocols and runs simulations for Opentrons Flex robots with crypto-based payments.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
label.api.williamrobinson.devAn API that compiles structured product data into print-ready PDF and SVG labels with automated compliance auditing for EU and US regulations.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
proof.platoskallipolis.comAn evidence resolution API for AI agents to verify identities, protocols, and on-chain accounts through source-linked data bundles.api · ai-and-agents · score 88/100 · checked 2026-09-27 · what we found
prototype.api.williamrobinson.devAn API that applies edits to OpenSCAD models, verifies constraints, and generates 3D printing slices for a fee settled in USDC on the Base network.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
test.agent.pocket.networkA marketplace of pay-per-call API services for AI agents using the x402 protocol for decentralized payments without accounts or keys.api · developer-tools · score 94/100 · checked 2026-09-27 · what we found
video.api.williamrobinson.devThis API provides video finishing services including crop reframing, subtitle burning, and loudness normalization with payments settled in USDC on the Base network.api · design-and-creative · score 60/100 · checked 2026-09-27 · what we found
allowance.schemasure.comA per-call API service that performs deterministic security checks on token allowance requests for blockchain agents on the Base network.api · finance-and-crypto · score 98/100 · checked 2026-09-27 · what we found
api.mach.galleryAn API providing machine-native Base blockchain data for autonomous agents with a pay-per-call model using USDC via x402.api · developer-tools · score 93/100 · checked 2026-09-27 · what we found
api.orcatrace.devAn API providing Polymarket intelligence and whale tracking data for AI agents using x402 micropayments on the Base network.api · finance-and-crypto · score 70/100 · checked 2026-09-27 · what we found
api.x402-engine.comA framework for machine commerce that provides payment admission, settlement verification, and verifiable receipts for AI agents.api · ai-and-agents · score 58/100 · checked 2026-09-27 · what we found
chainstate.schemasure.comAn API service providing comprehensive profiles for Base blockchain addresses, including contract code status, proxy resolution, token metadata, and balance checks for AI agents.api · developer-tools · score 98/100 · checked 2026-09-27 · what we found
payee.schemasure.comAn API providing deterministic verification of cryptocurrency payment destinations to prevent address poisoning and transfer errors for automated agents.api · finance-and-crypto · score 98/100 · checked 2026-09-27 · what we found
receipt.schemasure.comThis service provides deterministic verification of Base blockchain transaction receipts against specified intents to identify discrepancies or missing transfers.api · finance-and-crypto · score 98/100 · checked 2026-09-27 · what we found
shellpermit.schemasure.comAn API that tokenizes and checks bash commands against security policies to issue signed execution permits.api · developer-tools · score 98/100 · checked 2026-09-27 · what we found
x402.problocks.ioA payment gateway infrastructure for per-request USDC settlements to access API endpoints.api · finance-and-crypto · score 43/100 · checked 2026-09-27 · what we found
agents.driftflight.comAn AI image generation service specifically designed for autonomous agents to purchase and utilize text-to-image capabilities using stablecoins or fiat.api · ai-and-agents · score 88/100 · checked 2026-09-27 · what we found
api.gitbeacon.devThis API provides LLM-analyzed summaries and raw data of trending GitHub repositories with per-call micropayments.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
api.isocast.devA pay-per-signal API that provides Polymarket weather-market bucket-transition data for AI agents via x402 payments.api · developer-tools · score 67/100 · checked 2026-09-27 · what we found
api.signalis.devAn API providing real-time global intelligence digests and AI-business narrative analysis for AI agents via per-call micropayments.api · ai-and-agents · score 70/100 · checked 2026-09-27 · what we found
api.stackgoai.comAn API endpoint that extracts structured business contact information including emails, phone numbers, and social profiles from provided URLs for a fee per request.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
api.vindexapi.devAn API providing vehicle data including VIN decoding, US and Canadian recall information, and factory warranty terms with a pay-per-call model for AI agents.api · developer-tools · score 67/100 · checked 2026-09-27 · what we found
api.x402lint.devAn API providing conformance scanning and a graded directory for x402 protocol sellers, including scan reports and ecosystem legitimacy signals.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
kalender.halowerk.comAn API providing data on public holidays, working day arithmetic, and time zones for Germany, Austria, and Switzerland with pay-per-call integration.api · developer-tools · score 88/100 · checked 2026-09-27 · what we found
alphapulse.theaslangroupllc.comAlphaPulse provides a pay-per-query API for financial due diligence, covering signals, expert advisors, hedge fund holdings, and trading provider discovery using USDC on the Base network.api · finance-and-crypto · score 94/100 · checked 2026-09-27 · what we found
autopulse.theaslangroupllc.comAn automotive intelligence API providing endpoints for VIN recalls, market values, and repair data using x402 native payments on the Base network.api · developer-tools · score 94/100 · checked 2026-09-27 · what we found
careerpulse.theaslangroupllc.comA career intelligence API providing structured JSON data for salary benchmarking, skills gap analysis, and resume optimization using blockchain-based pay-per-query authentication.api · developer-tools · score 87/100 · checked 2026-09-27 · what we found
clinicalintelpulse.theaslangroupllc.comA pharmaceutical and medical intelligence API providing drug data, interaction screening, and clinical trial analytics for AI agents using pay-per-query payments.api · health · score 94/100 · checked 2026-09-27 · what we found
cyberpulse.theaslangroupllc.comAn API providing cybersecurity intelligence including CVE briefs, vulnerability scanning, and threat intelligence with pay-per-query USDC payments.api · developer-tools · score 94/100 · checked 2026-09-27 · what we found
policypulse.theaslangroupllc.comThis site provides a pay-per-query API for global legislative intelligence, offering structured JSON data on bills, regulations, and impacts across multiple jurisdictions.api · ai-and-agents · score 94/100 · checked 2026-09-27 · what we found
shopperpulse.theaslangroupllc.comAn API endpoint that takes a shopping list and returns ranked product recommendations with a stacked savings strategy including coupons and payment advice.api · commerce · score 94/100 · checked 2026-09-27 · what we found
solar.nsgoods.orgAn API providing machine-readable data on the legal status of plug-in and balcony solar installations across 50 US states, with support for payments via the x402 protocol.api · developer-tools · score 86/100 · checked 2026-09-27 · what we found
taxpulse.theaslangroupllc.comAn API providing global tax intelligence and citation-verified US state tax data with automated crypto payments.api · finance-and-crypto · score 91/100 · checked 2026-09-27 · what we found
api.clawinabox.xyzAn authorization and human-in-the-loop review layer for AI agents to manage spending and task delegation via Telegram approvals.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
browser.gedx402.comThe site provides a cloud-hosted Firecrawl API endpoint for web scraping, crawling, and data extraction tasks.api · developer-tools · score 54/100 · checked 2026-09-27 · what we found
buildpulse.theaslangroupllc.comA pay-per-query API on the Base network providing data for home construction and renovation, including cost estimates, contractor vetting, and permit requirements.api · ai-and-agents · score 94/100 · checked 2026-09-27 · what we found
govspendpulse.theaslangroupllc.comGovSpendPulse provides pay-per-query API access to global government procurement data from US, EU, and UK sources using the x402 payment protocol.api · data-and-analytics · score 94/100 · checked 2026-09-27 · what we found
insurepulse.theaslangroupllc.comA platform providing insurance claim guides and structured JSON API endpoints for coverage analysis, claim timelines, and statutory interest calculations.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
kortex.rohnelt.devA service providing verifiable evidence for AI agents to check the reliability and payment status of x402-enabled endpoints using on-chain data.api · ai-and-agents · score 85/100 · checked 2026-09-27 · what we found
prospectpulse.theaslangroupllc.comThis site provides a collection of paid APIs for global mineral and resource exploration intelligence, including deposit inventory, geochemical analysis, and jurisdiction risk assessment.api · data-and-analytics · score 94/100 · checked 2026-09-27 · what we found
soldefi.thomenz.meAn API providing Solana DeFi risk intelligence including rug scan, wash-trade detection, and liquidity pool analysis for AI agents.api · finance-and-crypto · score 88/100 · checked 2026-09-27 · what we found
venturepulse.theaslangroupllc.comAn API providing startup funding intelligence, investor matching, and term sheet analysis with payments settled via USDC on the Base network.api · finance-and-crypto · score 94/100 · checked 2026-09-27 · what we found
5108-x402.community.iamstarchild.comA payment gateway for on-chain market data that uses the 402 Payment Required status code to handle per-call stablecoin settlements across multiple blockchains.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
crypto.forgemesh.ioA paid market intelligence API providing calibrated price ranges, risk states, and decision auditing tools for autonomous agents via x402 micropayments.api · finance-and-crypto · score 98/100 · checked 2026-09-27 · what we found
gamepulse.theaslangroupllc.comA data platform offering API endpoints and editorial guides focused on gaming economies, in-game item trading, creator earnings, and hardware deals.api · data-and-analytics · score 94/100 · checked 2026-09-27 · what we found
harvestpulse.theaslangroupllc.comAn API providing agricultural intelligence and farm-to-table data including market finders, seasonal calendars, and organic certification lookups via pay-per-query USDC transactions.api · commerce · score 94/100 · checked 2026-09-27 · what we found
patentpulse.theaslangroupllc.comAn API providing pay-per-query global patent searches, freedom-to-operate analysis, and trademark clearance using USDC on the Base network for payment.api · score 94/100 · checked 2026-09-27 · what we found
proxy.0000402.xyzA pay-per-request HTTP proxy that allows AI agents to make outbound calls and bypass CORS or rate limits using USDC micropayments.api · ai-and-agents · score 55/100 · checked 2026-09-27 · what we found
regime.nsgoods.orgA programmatic endpoint providing deterministic market-regime classification and strategy specifications for cryptocurrencies, payable via USDC over x402.api · finance-and-crypto · score 72/100 · checked 2026-09-27 · what we found
router.forgemesh.ioA paid API discovery router that allows agents to query and filter ranked service endpoints using x402 payment headers.api · ai-and-agents · score 76/100 · checked 2026-09-27 · what we found
talentpulse.theaslangroupllc.comThis site provides a global workforce intelligence API for accessing salary benchmarks, remote compliance data, and talent market analysis using pay-per-query crypto payments.api · developer-tools · score 94/100 · checked 2026-09-27 · what we found
travelpulse.theaslangroupllc.comA programmatic interface for AI agents to access global travel data including park wait times, visa requirements, and travel insurance details using pay-per-query blockchain payments.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found