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.
scribe.vimabrosta.comA service providing domain lookups, translation, content conversion, and rendering for AI agents via x402 micropayments without requiring accounts or API keys.api · developer-tools · score 100/100 · checked 2026-09-27 · what we found
stat.halowerk.comThis site offers paid API endpoints for autonomous agents to access macroeconomic indicators, inflation data, and labor market statistics.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
twitter.surf.cascade.fyiThis service provides a single remote endpoint for AI agents to access live data from social media platforms and the web without managing individual API keys.api · ai-and-agents · score 28/100 · checked 2026-09-27 · what we found
vedetta.dethboy.comA pay-per-call API gateway providing market intelligence signals and sentiment analysis for AI agents using the x402 protocol.api · finance-and-crypto · score 87/100 · checked 2026-09-27 · what we found
api.agentwork.runA pay-as-you-go API for AI agents to extract structured text from web pages and digital PDFs with content hashing for change monitoring.api · ai-and-agents · score 74/100 · checked 2026-09-27 · what we found
api.aventtech.comA marketplace of machine-payable APIs for AV/IT device integration data, financial reference rates, and various data validation tools using the x402 protocol.api · developer-tools · score 77/100 · checked 2026-09-27 · what we found
api.onhub.aiThis platform provides pay-per-request API services for agents including search, code execution, and text inference settled via USDC on the Base network.api · ai-and-agents · score 62/100 · checked 2026-09-27 · what we found
bytemine.pay.zeroclick.ioBytemine is a B2B data platform offering company and contact search, enrichment, and buying intent scoring for sales and go-to-market teams.api · marketing-and-seo · score 84/100 · checked 2026-09-27 · what we found
machina.pay.zeroclick.ioMachina Sports provides World Cup 2026 intelligence APIs including entity resolution, match forecasts, player performance context, and editorial content via synchronous POST requests.api · data-and-analytics · score 84/100 · checked 2026-09-27 · what we found
mcp.courtdelta.comThis site provides a Model Context Protocol endpoint for AI agents to access North Carolina court records, offering both free tools and paid x402-enabled routes.api · developer-tools · score 80/100 · checked 2026-09-27 · what we found
pulse.chainverdict.xyzA data service that probes and ranks x402 endpoints to provide live quality metrics, pricing intelligence, and signed reliability attestations for autonomous agents.api · ai-and-agents · score 76/100 · checked 2026-09-27 · what we found
umpire.vimabrosta.comUmpire provides cryptographically signed deliverable verdicts and payment-verified reputation reports for AI agents via x402-enabled HTTP requests.api · ai-and-agents · score 100/100 · checked 2026-09-27 · what we found
agent.atinamos.co.ukAtinamos provides a collection of paid API endpoints for AI agents to perform web rendering checks, pre-purchase verification, JSON payload repair, and technical SEO crawling.api · developer-tools · score 73/100 · checked 2026-09-27 · what we found
agents.nibiashara.bizA marketplace of pay-per-call APIs for AI agents offering African exchange rates, US transport safety data, sanctions screening, and business services via the x402 protocol.api · data-and-analytics · score 77/100 · checked 2026-09-27 · what we found
anomaly.forgemesh.ioAn API provider offering real-time anomaly detection for blockchain mempools, stablecoin depegs, aviation squawk codes, and GitHub signals via pay-per-call micropayments.api · developer-tools · score 92/100 · checked 2026-09-27 · what we found
api.getplexa.comAn API providing decentralized exchange quotes and pre-trade security analysis for autonomous trading agents with a pay-per-call model.api · finance-and-crypto · score 58/100 · checked 2026-09-27 · what we found
api.nohumans.directoryA machine-readable directory and registry for agents to discover and verify paid APIs and datasets through automated payment probes.api · developer-tools · score 77/100 · checked 2026-09-27 · what we found
sh-origin.walls.shAn API providing web search, news retrieval, and webpage markdown scraping specifically designed for integration with AI agents and LLMs.api · developer-tools · score 89/100 · checked 2026-09-27 · what we found
the-stall.intuitek.aiA marketplace providing component tools for research, public data, and audio via the x402 protocol and Model Context Protocol.api · developer-tools · score 66/100 · checked 2026-09-27 · what we found
travel-agent.forgemesh.ioA suite of travel planning endpoints and MCP tools for AI agents to access weather-aware data, local experience briefs, and transit information via micropayments.api · ai-and-agents · score 85/100 · checked 2026-09-27 · what we found
x402.coinopai.comAn API providing calibrated crypto price ranges, risk assessments, and auditable decision journaling for AI agents via micropayments.api · finance-and-crypto · score 84/100 · checked 2026-09-27 · what we found
agents.forwardlane.comForwardLane provides agent-accessible APIs for code intelligence, including knowledge graphs, security findings, and financial-ontology mappings across private repositories.api · developer-tools · score 84/100 · checked 2026-09-27 · what we found
agents.samedaydesk.comA payment gateway and suite of pay-per-call tools for AI agents offering web extraction, security scanning, and blockchain intelligence using Base USDC.api · developer-tools · score 89/100 · checked 2026-09-27 · what we found
api.nameintel.ioAn API and Model Context Protocol server that scores brand names for domain availability, trademark conflicts, social handles, and AI findability using micropayments.api · marketing-and-seo · score 80/100 · checked 2026-09-27 · what we found
bazaar.fronesislabs.comA safety gate API for AI agents that evaluates tool calls for security risks, financial safety, and PII leakage before execution.api · ai-and-agents · score 76/100 · checked 2026-09-27 · what we found
forwardlane.pay.zeroclick.ioForwardLane provides agent-accessible APIs for code intelligence, including knowledge graphs, security findings, and technical due diligence metrics for financial services repositories.api · developer-tools · score 84/100 · checked 2026-09-27 · what we found
intel.chainquery.comA Bitcoin on-chain intelligence API offering paid endpoints for fee pressure, coin days destroyed, and address data via x402 payment.api · finance-and-crypto · score 61/100 · checked 2026-09-27 · what we found
rng.sociologic.aiThis site provides a cryptographically secure random number generation API that accepts USDC payments on the Base network for various randomization endpoints.api · developer-tools · score 63/100 · checked 2026-09-27 · what we found
signals.edge.reportA paid API service providing live gas fees, token risk checks, wallet balances, and crypto market signals for AI agents using x402 USDC payments.api · developer-tools · score 82/100 · checked 2026-09-27 · what we found
x402.devvizion.comA collection of pay-per-use API endpoints and MCP tools for research, content outlining, and agency workflow automation using USDC on the Base network.api · ai-and-agents · score 89/100 · checked 2026-09-27 · what we found
api.3route.ioAn API and developer resource for cryptocurrency token swaps and agent-based trading skills.api · finance-and-crypto · score 63/100 · checked 2026-09-27 · what we found
api.wines.betA pay-per-request API on the Base network providing fine wine market data, valuation benchmarks, and sommelier intelligence for AI agents and developers.api · data-and-analytics · score 82/100 · checked 2026-09-27 · what we found
arbipulse.theaslangroupllc.comAn API providing structured data for cross-market arbitrage opportunities, including prediction markets, GPU compute, and financial instruments via pay-per-query access.api · finance-and-crypto · score 94/100 · checked 2026-09-27 · what we found
mpp.tracefast.xyzTraceFast provides blockchain data endpoints for Ethereum address attributes, counterparties, and token holdings through a pay-per-call model using x402.api · finance-and-crypto · score 67/100 · checked 2026-09-27 · what we found
natur.halowerk.comA directory of paid endpoints for autonomous agents to access earthquake, seismic proximity, and geological data paid via USDC on the Base network.api · data-and-analytics · score 81/100 · checked 2026-09-27 · what we found
stumble.vimabrosta.comA monitoring service that uses micropayments to watch web pages for specific conditions and notify AI agents via webhooks when they occur.api · ai-and-agents · score 100/100 · checked 2026-09-27 · what we found
web.cyberwarex.comA programmatic web scraping service for AI agents that provides markdown conversion, element extraction, and screenshots with pay-per-call USDC payments.api · ai-and-agents · score 56/100 · checked 2026-09-27 · what we found
api.messari.ioThe site provides access to standardized cryptocurrency data including market metrics, on-chain analytics, and exchange information through an enterprise-grade API.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
fracht.halowerk.comThis site offers paid API endpoints for autonomous agents to perform logistics tasks such as resolving UN/LOCODEs, validating container IDs, and parsing shipping references.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
imagegen.coinopai.comA pay-per-request API for AI image generation and transformations using USDC on the Base mainnet via the x402 protocol.api · ai-and-agents · score 83/100 · checked 2026-09-27 · what we found
social.gedx402.comA social data ingestion service providing profile information, posts, and transcripts through an API proxy with a pay-per-outcome model.api · developer-tools · score 54/100 · checked 2026-09-27 · what we found
staging.402utils.comA collection of pay-per-call micro-utilities for AI agents including PDF rendering, screenshots, and VAT validation using the x402 protocol.api · developer-tools · score 76/100 · checked 2026-09-27 · what we found
tools.halowerk.comA collection of API endpoints for autonomous agents offering web utilities, data processing, and security checks with pay-per-call USDC billing.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
x402-test.genesisblock.aiGenesis Block provides payment-gated API endpoints for weather, equity market headlines, and cryptocurrency news using USDC micropayments on the Base Sepolia testnet.api · developer-tools · score 75/100 · checked 2026-09-27 · what we found
zoll.halowerk.comA paid API service providing customs and trade compliance endpoints for autonomous agents, billed in USDC via x402.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
agents.withzero.xyzWithZero provides a marketplace of services for AI agents to perform tasks like media creation, research, and publishing without requiring individual vendor accounts.api · ai-and-agents · score 94/100 · checked 2026-09-27 · what we found
api.hyperd.aihyperD offers on-chain DeFi data APIs priced per call, using signed USDC payments on Base as authentication for AI agents.api · finance-and-crypto · score 59/100 · checked 2026-09-27 · what we found
app.heinrichstech.comPageDelta offers a pay-per-use API that renders public web pages into Markdown and tracks content changes relative to a baseline for AI agents.api · developer-tools · score 92/100 · checked 2026-09-27 · what we found
deepai.pay.zeroclick.ioThe site provides a suite of artificial intelligence APIs for generating images from text, editing photos, upscaling resolution, and creating short videos.api · ai-and-agents · score 84/100 · checked 2026-09-27 · what we found
gpt55.558686.xyzA gateway service for purchasing individual OpenAI-compatible API calls and credits using USDC and the x402 protocol on the Base network.api · ai-and-agents · score 80/100 · checked 2026-09-27 · what we found
x402.asterpay.ioPublic API providing trust scoring, merchant discovery, and USDC to EUR settlement via SEPA for AI agent payments.api · finance-and-crypto · score 82/100 · checked 2026-09-27 · what we found
x402.dailyelo.comThis site offers machine-payable API endpoints for decoding EVM signature requests and validating x402 service listings using the HTTP 402 protocol and USDC on Base.api · developer-tools · score 57/100 · checked 2026-09-27 · what we found
zeroclick.affiliate.comAn API providing product search, merchant lookup, and identifier conversion services for AI agents across a merchant catalog.api · commerce · score 88/100 · checked 2026-09-27 · what we found
agents.ai-rook.comA platform offering pay-per-call API endpoints for legal research, scientific data, trading intelligence, and creative AI services using cryptocurrency payments.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
agents.bytemine.aiBytemine is a B2B data platform offering company and contact search, enrichment services, and buying intent signals for sales and go-to-market teams.api · marketing-and-seo · score 84/100 · checked 2026-09-27 · what we found
dep.halowerk.comA collection of paid API endpoints for autonomous agents to check package metadata, version resolution, and registry security metrics across multiple ecosystems.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
trade.chainverdict.xyzThis site provides API endpoints for validating and processing logistics identifiers including GTIN, SSCC, ISO container codes, and HS code classification.api · developer-tools · score 83/100 · checked 2026-09-27 · what we found
workbot1.oddsys.orgA pay-per-call API suite for AI agents offering data transformation, OCR, web scraping, and financial validation using USDC on the Base network.api · developer-tools · score 74/100 · checked 2026-09-27 · what we found
x402.botsmith.devA suite of pay-per-call APIs for trading agents offering market data from social media, prediction markets, derivatives exchanges, and stablecoin pegs without requiring accounts or API keys.api · developer-tools · score 71/100 · checked 2026-09-27 · what we found
x402.browserbase.comA payment gateway for browser sessions and web search that utilizes the x402 and MPP protocols for crypto-based, pay-per-use access without accounts.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
x402.hydratrader.aiThis site offers pay-per-call API endpoints for text summarization, sentiment analysis, translation, and structured data extraction using USDC on the Base network.api · ai-and-agents · score 73/100 · checked 2026-09-27 · what we found
x402.sniperx.funAn API providing Solana blockchain intelligence, token price data, and trader activity analytics for autonomous agents and prediction markets.api · finance-and-crypto · score 52/100 · checked 2026-09-27 · what we found
agri.halowerk.comA collection of API endpoints for autonomous agents to perform agricultural calculations such as soil moisture balancing, pest outbreak heuristics, and harvest window estimation.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
creator.halowerk.comThis site provides a suite of paid API endpoints for autonomous agents, offering specialized functions for media scoring, watermark embedding, and creator-focused data processing.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
geo.halowerk.comA collection of geospatial API endpoints for autonomous agents offering coordinate transformation, geohashing, and geometric calculations with USDC payments on the Base Mainnet.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
onchainpulse.theaslangroupllc.comOnchain finance intelligence platform providing token safety verdicts, RWA yield data, and regulatory tracking via structured JSON endpoints for agents and institutions.api · finance-and-crypto · score 94/100 · checked 2026-09-27 · what we found
prop.halowerk.comA collection of paid API endpoints for real estate and proptech calculations including yield forecasting, zoning logic, and HVAC fault detection.api · data-and-analytics · score 81/100 · checked 2026-09-27 · what we found
quantum.halowerk.comA collection of pay-per-use endpoints for quantum computing simulations, circuit optimization, and mathematical modeling, billed in USDC.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
scry.solanahub.deA Solana wallet intelligence API providing forensics, funding lineage, and risk screening data for AI agents using a pay-per-request model.api · developer-tools · score 80/100 · checked 2026-09-27 · what we found
space.halowerk.comA collection of paid API endpoints for space-related calculations and data processing, including satellite pass prediction, debris collision analysis, and orbital decay modeling.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
surf.cascade.fyiA remote endpoint providing live data from various social platforms and the web for AI agents without requiring individual API keys.api · ai-and-agents · score 28/100 · checked 2026-09-27 · what we found
x402.ochinimus.appAn API providing real-time crypto liquidation data, funding rates, and market snapshots for AI agents with a pay-per-call USDC model.api · finance-and-crypto · score 76/100 · checked 2026-09-27 · what we found
agents.machina.ggMachina Sports provides synchronous JSON APIs for World Cup 2026 data, including entity resolution, match forecasts, and editorial content specifically formatted for AI agents.api · ai-and-agents · score 84/100 · checked 2026-09-27 · what we found
aialign.halowerk.comThis site provides paid API endpoints for autonomous agents to perform lexical grounding screening, sycophancy detection, goal drift analysis, and other safety and evaluation metrics.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
api.ukintel.ukAn API providing structured data and risk scores for UK companies, public tenders, and grants, using the x402 payment protocol for per-call billing.api · developer-tools · score 79/100 · checked 2026-09-27 · what we found
bio.halowerk.comA collection of paid API endpoints for autonomous agents to perform bioinformatics calculations such as protein folding lattice checks and microbiome diversity indexing.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
gaming.halowerk.comThe site provides a series of paid API endpoints for game development tasks including NPC dialogue generation, asset specification, and matchmaking logic.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
gov.halowerk.comA collection of paid API endpoints for autonomous agents to perform governance-related tasks such as proposal summarization, treasury calculations, and voter turnout predictions.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
iot.halowerk.comThis site offers paid API endpoints for autonomous agents to perform IoT-related tasks including sensor calibration, device authentication, and battery degradation modeling.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
voice.forgemesh.ioA pay-per-call text-to-speech API offering various persona voices and languages for AI agents and content creation with cryptocurrency payment integration.api · ai-and-agents · score 83/100 · checked 2026-09-27 · what we found
x402.nexari.cloudA collection of paid APIs for AI agents offering transcription, German company data, and physical mail services with crypto-based payments.api · developer-tools · score 47/100 · checked 2026-09-27 · what we found
agente.revenuerecoveryai.appThis site provides verifiable diagnostics, security audits, and discovery evidence for autonomous agents and APIs using the x402 payment protocol on the Base network.api · ai-and-agents · score 77/100 · checked 2026-09-27 · what we found
api.eucompliance.toolsAn API service providing machine-readable compliance and market decisions for autonomous agents via MCP and x402 protocols.api · developer-tools · score 77/100 · checked 2026-09-27 · what we found
api.ozdreamtools.deA collection of paid HTTP endpoints for AI agents providing automated checks for German legal compliance, document accessibility, and technical formatting.api · developer-tools · score 62/100 · checked 2026-09-27 · what we found
api.telemost.ioAn API providing Telegram channel analytics, engagement metrics, and post search for AI agents with a pay-per-call model using USDC.api · developer-tools · score 75/100 · checked 2026-09-27 · what we found
defi-api.agenticfi.wtfA suite of thirty-six pay-per-call endpoints providing token pricing, wallet analytics, swap routing, and decentralized finance protocol data for AI agents.api · finance-and-crypto · score 82/100 · checked 2026-09-27 · what we found
disruption.forgemesh.ioThe site provides access to workforce disruption data and ripple effect analysis through a metered API for tracking layoffs and facility closures.api · data-and-analytics · score 87/100 · checked 2026-09-27 · what we found
library.forgemesh.ioA programmatic interface for AI agents to access and query a collection of over sixty thousand public-domain books using the x402 payment protocol.api · education · score 77/100 · checked 2026-09-27 · what we found
standortdossier.halowerk.comA directory of paid API endpoints for autonomous agents to access site dossiers regarding land use, soil measurements, and environmental screening.api · data-and-analytics · score 71/100 · checked 2026-09-27 · what we found
touchstone.locomot.ioA trust layer and deterministic workbench for AI agents providing verified facts, randomness, and cryptographic utilities on the Base network.api · ai-and-agents · score 89/100 · checked 2026-09-27 · what we found
agent.connskill.comThis site offers pay-per-call APIs for AI agents, including SEO data, local market research, SMS verification, and EU-hosted language models payable via USDC on the Base network.api · developer-tools · score 99/100 · checked 2026-09-27 · what we found
agent.massive.comThe site provides an API for US stock market data and other financial assets that allows for per-request payments using USDC via the x402 protocol without requiring an account.api · finance-and-crypto · score 76/100 · checked 2026-09-27 · what we found
agents.dexl.ioA platform providing a machine-readable API for AI agents to discover, price, and pay for LLM calls and data services using on-chain settlement.api · ai-and-agents · score 79/100 · checked 2026-09-27 · what we found
api.marketintelligenceapi.comA pay-per-call API providing real-time trade flow intelligence, token risk assessments, and financial data for cryptocurrencies and tokenized US stocks.api · finance-and-crypto · score 72/100 · checked 2026-09-27 · what we found
gateway.stride20k.comA gateway providing data endpoints for agentic payment diligence and market observation via the x402 protocol.api · ai-and-agents · score 62/100 · checked 2026-09-27 · what we found
lab.paidapis.netA collection of over twenty live API endpoints on the Base mainnet that demonstrate various x402 payment mechanics like oracles, auctions, and escrow.api · developer-tools · score 75/100 · checked 2026-09-27 · what we found
landdossier.halowerk.comAn API providing decision-support dossiers and screening evidence for solar farms, wind farms, and battery storage sites, payable via USDC.api · data-and-analytics · score 81/100 · checked 2026-09-27 · what we found
x402.aispace.botA marketplace offering pay-per-request AI inference for agents including chat, image generation, and search using USDC on the Base network.api · ai-and-agents · score 99/100 · checked 2026-09-27 · what we found
x402.shizu.meA pay-per-call API service for AI agents offering OpenAI-compatible LLM gateways, web scraping, and data endpoints using USDC payments on the Base network.api · ai-and-agents · score 97/100 · checked 2026-09-27 · what we found
api.oblique.marketsAn autonomous machine-to-machine execution node providing pay-per-call services, market data, and MCP endpoints for AI agents on the Base network.api · ai-and-agents · score 70/100 · checked 2026-09-27 · what we found