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.
wallet-intelligence-three.vercel.appAn API service that provides risk assessment and execution reports for cryptocurrency wallets and transactions across multiple EVM chains.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
agentproof-murex.vercel.appAgentProof provides an API for validating, repairing, and scoring structured API responses before AI agents act on them.api · ai-and-agents · score 77/100 · checked 2026-09-27 · what we found
conch402.dylan-caponi.workers.devA parody API inspired by SpongeBob SquarePants that provides randomized responses from the Magic Conch Shell for a small cryptocurrency fee.api · ai-and-agents · score 58/100 · checked 2026-09-27 · what we found
statepulse-api.hahavoid0.workers.devAn API providing telemetry and utility endpoints for AI agents including logistics, environmental, and product data paid for with USDC via the x402 protocol.api · developer-tools · score 71/100 · checked 2026-09-27 · what we found
torii-gateway-production.ichis-lab.workers.devThis site provides access to Japanese public data, such as national holidays and business calendars, through pay-per-call APIs using the x402 payment protocol.api · developer-tools · score 59/100 · checked 2026-09-27 · what we found
trustfetch.duckdns.orgTrustFetch provides API endpoints for prompt-injection scanning and markdown webpage fetching for AI agents using x402 USDC micropayments.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
action402.vercel.appAction402 provides a paid execution layer for AI agents to perform webhook and API calls with integrated payment verification and decision logs on the Base network.api · developer-tools · score 86/100 · checked 2026-09-27 · what we found
agent-paycheck.onrender.comA paid endpoint that evaluates the value of other machine-payable URLs to help AI agents decide whether to complete a transaction.api · ai-and-agents · score 71/100 · checked 2026-09-27 · what we found
brokenkey-api-link-ruby.vercel.appAn HTTP endpoint that provides a software download link for a keyboard remapping utility upon receipt of a 0.001 USDC payment on the Base network.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
chainsscope.duckdns.orgChainScope provides multi-chain wallet intelligence and OFAC sanctions screening via an API that uses x402 USDC micropayments for instant access without registration.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
concordancehq.duckdns.orgA cross-source search and claim corroboration tool that uses x402 micropayments for real-time data access from eighteen different sources.api · ai-and-agents · score 81/100 · checked 2026-09-27 · what we found
context-relay.contextrelay.workers.devA paid infrastructure service that provides autonomous agents with verifiable, cited, and compact web context from URLs via a machine-to-machine API.api · ai-and-agents · score 67/100 · checked 2026-09-27 · what we found
orchard-data.netlify.appAn API providing market data and machine learning trading forecasts for AI agents using the x402 payment protocol on the Base network.api · finance-and-crypto · score 91/100 · checked 2026-09-27 · what we found
seoul-weather-402.fly.devAn API providing real-time and historical weather data for Seoul using KMA source data, with payments handled via the x402 protocol on the Base network.api · developer-tools · score 76/100 · checked 2026-09-27 · what we found
402timezones.vercel.appAn x402-enabled API endpoint on the Base network that converts timestamps between different IANA time zones for a micro-payment in USDC.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
brokenkey-api-link-tau.vercel.appAn automated x402 endpoint that provides a software download link for the Broken Key Remapper tool upon payment of 0.001 USDC on the Base network.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
cars2026.vercel.appA pay-per-use HTTP endpoint that provides a JSON briefing on upcoming 2026 vehicle models, settled via USDC on the Base network.api · ai-and-agents · score 78/100 · checked 2026-09-27 · what we found
horrorstoryapi.vercel.appAn API endpoint on the Base mainnet that provides horror stories for a fee of 0.50 USDC per access.api · developer-tools · score 43/100 · checked 2026-09-27 · what we found
jokes-endpoint.vercel.appAn API endpoint that provides random jokes in JSON format after a payment is settled in USDC on the Base network.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
memegeneratorx402.vercel.appA pay-per-use HTTP endpoint that returns a captioned meme image upon receiving a specified USDC payment on the Base network.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
riddlex402.vercel.appA pay-per-use HTTP endpoint on the Base mainnet that provides a riddle and its answer upon receipt of a specific USDC payment.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
roastx402endpoint.vercel.appAn API endpoint on the Base mainnet that provides lighthearted roasts in exchange for USDC payments verified via x402 middleware.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
weight402endpoint.vercel.appA pay-per-call weight and mass conversion API that uses the x402 protocol for payments on the Base mainnet.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
x402wordoftheday.vercel.appA pay-per-use HTTP endpoint on the Base network that returns a daily curated word and definition upon payment of 0.001 USDC.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
agentforge-production-0893.up.railway.appA background service providing on-chain intelligence and memory for AI agents and cryptocurrency users with paid and public API endpoints.api · ai-and-agents · score 71/100 · checked 2026-09-27 · what we found
briefing-service.wholemind.workers.devA service providing hourly news briefings in JSON, MCP, and e-ink friendly formats for AI agents and low-power displays.api · ai-and-agents · score 53/100 · checked 2026-09-27 · what we found
coinflip402.vercel.appAn API endpoint on the Base network that facilitates coin flip operations using the x402 payment protocol.api · developer-tools · score 43/100 · checked 2026-09-27 · what we found
dicex402.vercel.appThis page provides a paid API endpoint on the Base network for rolling a dice with a customizable number of faces.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
ladyfortunalx402.vercel.appA pay-per-use HTTP endpoint on the Base mainnet that returns a fortune message upon receiving a 0.001 USDC payment via the x402 protocol.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
randomfactsx402.vercel.appA pay-per-use HTTP endpoint on the Base network that returns a random fact in JSON format upon receipt of a 0.001 USDC payment.api · developer-tools · score 78/100 · checked 2026-09-27 · what we found
url-intel.bowling-anthony.workers.devAn API service that provides URL redirect tracing, HTTP header analysis, and sitemap extraction with pay-per-call pricing in USDC.api · developer-tools · score 53/100 · checked 2026-09-27 · what we found
x402lifeadvice.vercel.appA pay-per-use HTTP endpoint that returns life advice upon receipt of a 0.001 USDC payment on the Base mainnet.api · ai-and-agents · score 78/100 · checked 2026-09-27 · what we found
x402uselessfacts.vercel.appA pay-per-use HTTP endpoint on the Base mainnet that returns a random fact upon receipt of a small USDC payment.api · developer-tools · score 68/100 · checked 2026-09-27 · what we found
cf-exclusion-check.cf-exclusion-check.workers.devAn API service for screening individuals and businesses against federal healthcare and government exclusion lists like HHS-OIG LEIE and SAM.gov.api · health · score 61/100 · checked 2026-09-27 · what we found
cf-package-check.cf-exclusion-check.workers.devAn API providing abandonment risk scores and update status for WordPress plugins, npm packages, and PyPI projects based on registry data.api · developer-tools · score 61/100 · checked 2026-09-27 · what we found
kristo-intelligence-api.onrender.comA decentralized finance market intelligence API that utilizes HTTP 402 payment challenges for on-chain data access via USDC on the Base network.api · finance-and-crypto · score 87/100 · checked 2026-09-27 · what we found
mentionforge.mentionforge.workers.devA social listening and research API for AI agents that provides structured, cited intelligence from multiple sources with on-chain payments.api · ai-and-agents · score 65/100 · checked 2026-09-27 · what we found
agent-guild-5d5r.onrender.comA service that verifies autonomous agent endpoints and provides trust decisions for payment safety via REST, MCP, and A2A interfaces.api · ai-and-agents · score 75/100 · checked 2026-09-27 · what we found
bizintel-api.hahavoid0.workers.devA collection of machine-readable endpoints for AI agents providing business data, scraping, and environmental metrics with pay-per-call blockchain settlement.api · developer-tools · score 71/100 · checked 2026-09-27 · what we found
kaisha-api.hp-vladic.workers.devAn API providing access to Japanese corporate registry data and invoice verification for AI agents using the x402 payment protocol.api · developer-tools · score 63/100 · checked 2026-09-27 · what we found
orchard-data.letom1176.workers.devFinancial market data API providing machine learning forecasts, backtesting, and ticker context for AI agents using the x402 payment protocol on the Base network.api · finance-and-crypto · score 77/100 · checked 2026-09-27 · what we found
quietstore-production.edge-7e13f.workers.devA payment-gated API service that allows AI agents to pay small USDC fees to verify website deployments, audit npm lockfiles for security issues, and check x402 endpoint readiness.api · developer-tools · score 79/100 · checked 2026-09-27 · what we found
raptor-base-yields.vercel.appAn API providing live USDC lending yields on the Base network with specific endpoints for agents to calculate net returns after gas costs.api · finance-and-crypto · score 73/100 · checked 2026-09-27 · what we found
wazir-x402.duckdns.orgAn API providing real-time, pay-as-you-go on-chain data and bot-scanning signals for DeFi protocols like Morpho and PoolTogether on various blockchain networks.api · developer-tools · score 75/100 · checked 2026-09-27 · what we found
ali-acids-helmet-cindy.trycloudflare.comA search and validation service for the x402 agent economy that indexes resources and provides live endpoint conformance checks via paid API calls.api · developer-tools · score 42/100 · checked 2026-09-27 · what we found
chess402.vercel.appA pay-per-call API providing access to Lichess data, including Stockfish evaluations, opening explorers, and user profiles.api · developer-tools · score 79/100 · checked 2026-09-27 · what we found
grocery-basket.bowling-anthony.workers.devAn API providing real-time grocery price comparisons and basket optimization across different retailers using local shelf data.api · commerce · score 53/100 · checked 2026-09-27 · what we found
onchain-toolkit.bowling-anthony.workers.devAn API providing real-time gas prices, token metadata, transaction statuses, and address balances across multiple blockchain networks using a pay-per-call model.api · developer-tools · score 53/100 · checked 2026-09-27 · what we found
oracles-production.up.railway.appA collection of pay-per-call data oracles for AI agents providing change intelligence on software dependencies, regulations, tariffs, and government actions.api · ai-and-agents · score 69/100 · checked 2026-09-27 · what we found
x402-data-api.sigrunner.workers.devThis site provides a pay-per-call data API on the Base network for blockchain reads, market data, and security scans using the x402 protocol for automated payments.api · ai-and-agents · score 78/100 · checked 2026-09-27 · what we found
agent-research-api.onrender.comAn API for AI agents to convert webpages and company domains into structured JSON data with per-call payments via the x402 protocol on the Base network.api · developer-tools · score 83/100 · checked 2026-09-27 · what we found
base-gas-x402-production.up.railway.appA gas oracle for the Base mainnet that requires payments per call via the x402 protocol and provides machine-readable endpoints.api · finance-and-crypto · score 42/100 · checked 2026-09-27 · what we found
booaip.vercel.appA pay-per-call crypto and web3 data interface providing endpoints for prices, TVL, and risk profiles accessible via USDC on the Base network.api · finance-and-crypto · score 75/100 · checked 2026-09-27 · what we found
gblin-sentinel.vercel.appAn autonomous agent on the Base mainnet that provides real-time DeFi risk signals and treasury analytics via x402 micropayments.api · finance-and-crypto · score 79/100 · checked 2026-09-27 · what we found
ichimoku-signal.onrender.comAn API and MCP tool providing Ichimoku Cloud technical analysis signals for cryptocurrency trading, designed for pay-per-call use by AI agents.api · finance-and-crypto · score 79/100 · checked 2026-09-27 · what we found
insider-radar-agent.insider-radar-agent.workers.devAn API offering telemetry, signals, and leaderboard data from a simulated paper-trading research lab covering prediction markets and crypto assets.api · finance-and-crypto · score 58/100 · checked 2026-09-27 · what we found
mcpfax-markets.bowling-anthony.workers.devAn API for AI agents providing macroeconomics, rates, foreign exchange, and cryptocurrency data from sources like FRED, DefiLlama, and Polymarket.api · finance-and-crypto · score 53/100 · checked 2026-09-27 · what we found
wailand.tailf99551.ts.netThe site provides machine-payable API endpoints for EU and DACH funding opportunities and global disaster alert data settled via the x402 protocol.api · finance-and-crypto · score 67/100 · checked 2026-09-27 · what we found
codepulse-api.hahavoid0.workers.devAn API providing web scraping, search, and utility endpoints for AI agents with a pay-per-call model on the Base network.api · developer-tools · score 71/100 · checked 2026-09-27 · what we found
hosaka-agents.vercel.appAn API providing verifiable company vendor data and technical signatures derived from DNS records, payable per request via cryptocurrency.api · developer-tools · score 82/100 · checked 2026-09-27 · what we found
k-data-x402-production.theblack1022.workers.devAn API service providing Korean market data, kimchi premium statistics, and translated equity research for AI agents with a pay-per-request model.api · finance-and-crypto · score 58/100 · checked 2026-09-27 · what we found
livecheck.fly.devAn API for verifying the status of external URLs like job postings or product pages, charging via USDC on the Base network.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
mcpfax-intel.bowling-anthony.workers.devA metered API providing market intelligence and transaction data for x402 agents based on observed USDC money flow on the Base network.api · ai-and-agents · score 63/100 · checked 2026-09-27 · what we found
scrooge-x402-tool-mill.vercel.appA collection of pay-per-call JSON APIs on the Base mainnet that provide structured page metadata, readable text, and link graphs for AI agents using the x402 protocol.api · developer-tools · score 77/100 · checked 2026-09-27 · what we found
alphapipeline-eu.onrender.comA pay-per-call data API providing security checks and market analytics for blockchain-based trading agents using USDC payments on the Base network.api · finance-and-crypto · score 72/100 · checked 2026-09-27 · what we found
faultcode-diagnostic-mcp.bowling-anthony.workers.devAn API providing vehicle diagnostics data including fault codes, NHTSA recalls, technical service bulletins, and VIN decoding with a pay-per-call model.api · developer-tools · score 53/100 · checked 2026-09-27 · what we found
geld-machen-x402.fly.devThe site provides pay-per-call agent utilities on the Base network including JSON patches, DeFi snapshots, allowance scans, and transaction explanations.api · developer-tools · score 75/100 · checked 2026-09-27 · what we found
mcpfax-utility.bowling-anthony.workers.devAn API providing various endpoints for public data including geocoding, weather, finance, and government registries with a pay-per-call model using USDC on Base.api · developer-tools · score 58/100 · checked 2026-09-27 · what we found
scrapecheck.fly.devScrapeCheck provides a service to verify the accuracy of web scraped data by re-fetching URLs and returning signed verdicts of pass, fail, or unverifiable.api · developer-tools · score 83/100 · checked 2026-09-27 · what we found
techforce-agents.onrender.comA collection of live data endpoints for AI agents providing business leads, Amazon products, events, LinkedIn candidates, YouTube transcripts, and job listings paid per request.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
x402-api-catalog.onrender.comThis site provides API endpoints for AI agents to verify the security and health of npm packages, GitHub repositories, domains, and EVM token contracts.api · ai-and-agents · score 96/100 · checked 2026-09-27 · what we found
x402-data-api.x402agent.workers.devThis site provides a pay-as-you-go API that converts SEC filings and XBRL data into structured briefs, risk flags, and investment memos for AI agents.api · finance-and-crypto · score 67/100 · checked 2026-09-27 · what we found
agentforge-taupe.vercel.appAn infrastructure layer for AI agents to perform security checks on DeFi transactions, tokens, and smart contracts with pay-per-request pricing.api · finance-and-crypto · score 72/100 · checked 2026-09-27 · what we found
api.agent-payload-tools.workers.devA collection of payment-gated utility endpoints for AI agents to perform cryptographic hashing, encoding, JSON validation, and payload transformations.api · developer-tools · score 64/100 · checked 2026-09-27 · what we found
blockchain-api.x402-chain-tools.workers.devA suite of pay-per-request API endpoints for retrieving Base Mainnet blockchain data including block numbers, wallet balances, token allowances, and transaction statuses.api · developer-tools · score 63/100 · checked 2026-09-27 · what we found
odds.rjhsignaltech.workers.devAn API and MCP server providing prediction market data, web extraction, and LLM forecasting services with per-request machine payments.api · ai-and-agents · score 57/100 · checked 2026-09-27 · what we found
sovereign-x402-zeta.vercel.appA catalog of programmatic endpoints for AI chat, code execution, and mathematical sequences that require micro-payments via the x402 protocol on the Base network.api · developer-tools · score 76/100 · checked 2026-09-27 · what we found
x402-stock-indicators.vercel.appA financial data provider offering stock, macro, and crypto information paid for via on-chain USDC transactions per request using the x402 protocol.api · finance-and-crypto · score 77/100 · checked 2026-09-27 · what we found
agentdata-api.sander-van-aard.workers.devA paid API providing European company screening, VAT validation, LEI lookup, and crypto market intelligence for AI agents using x402 payments.api · finance-and-crypto · score 58/100 · checked 2026-09-27 · what we found
agents.tuski.aiTuski provides an asynchronous API for bulk email list validation using syntax checks, MX verification, and probe sends to generate deliverability scores and bounce signals.api · marketing-and-seo · score 84/100 · checked 2026-09-27 · what we found
clink-lithium-vault.fly.devA marketplace of pay-per-call API endpoints for AI agents offering X/Twitter data, prediction market odds, and document utilities via USDC payments.api · ai-and-agents · score 76/100 · checked 2026-09-27 · what we found
mcp.whitemagic.devA hosted Model Context Protocol server providing read-only data recalls over a public corpus via HTTP with various authentication and payment options.api · developer-tools · score 72/100 · checked 2026-09-27 · what we found
squeezeos-api.onrender.comSqueezeOS provides agent-native APIs, Model Context Protocol discovery, and x402 payment infrastructure for autonomous machine-to-machine commerce.api · ai-and-agents · score 76/100 · checked 2026-09-27 · what we found
stash.fluidrack.comA storage service for AI agents that provides time-to-live artifact management backed by S3-compatible object storage with machine-readable discovery files.api · developer-tools · score 70/100 · checked 2026-09-27 · what we found
airscout.scalpstream.comAn API providing current global air quality data, exercise safety verdicts based on EPA standards, and forecasts for the cleanest outdoor activity windows.api · developer-tools · score 95/100 · checked 2026-09-27 · what we found
api.queryspigot.comAn API for retrieving Irish company registration data from official records with payment handled via USDC on the Base network.api · developer-tools · score 79/100 · checked 2026-09-27 · what we found
buero.halowerk.comThe site provides paid API endpoints for autonomous agents to perform entity graph extraction from documents and generate GDPR compliance records.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
ident.halowerk.comA paid API service providing endpoints for autonomous agents to resolve names, inspect multisigs, simulate account abstraction operations, and read DAO snapshots.api · developer-tools · score 84/100 · checked 2026-09-27 · what we found
lauf.halowerk.comThis site offers paid API endpoints for autonomous agents to perform browser tasks, validate form inputs, and fetch ephemeral browser snapshots with automated payment via USDC on Base.api · developer-tools · score 84/100 · checked 2026-09-27 · what we found
med.halowerk.comAn API for autonomous agents to query medication data including drug identity, official label sections, boxed warnings, and ingredient equivalence.api · health · score 81/100 · checked 2026-09-27 · what we found
page.fluidrack.comFluid Publish provides machine-readable API contracts and ephemeral publish pages designed for AI agents to discover and interact with paid routes.api · ai-and-agents · score 80/100 · checked 2026-09-27 · what we found
recallscout.scalpstream.comAn API that allows users to query food, drug, vehicle, and consumer product recall data from the FDA, NHTSA, and CPSC via a single endpoint.api · developer-tools · score 95/100 · checked 2026-09-27 · what we found
x402.911fund.ioAn API and chat interface providing real-time crypto intelligence, sentiment analysis, and macro-economic data sourced from live platforms.api · finance-and-crypto · score 83/100 · checked 2026-09-27 · what we found
api.callmeter.devAn API providing pay-per-call utilities for AI agents including JSON Schema drafting, validation, and document parsing via USDC on the Base network.api · developer-tools · score 88/100 · checked 2026-09-27 · what we found
api.mydev-tools.techA stateless API providing behavioral habit analysis, planning, and insights with pay-per-call USDC payments on the Base network.api · ai-and-agents · score 83/100 · checked 2026-09-27 · what we found
ip.halowerk.comA pay-per-call IP intelligence service on the Base mainnet that provides network ownership, geolocation, and risk signals without requiring an account.api · developer-tools · score 87/100 · checked 2026-09-27 · what we found
kette.halowerk.comA set of paid API endpoints for autonomous agents to verify smart contracts, resolve token identities, and simulate transaction safety on multiple blockchains.api · finance-and-crypto · score 81/100 · checked 2026-09-27 · what we found
netz.halowerk.comThis site offers paid API endpoints for autonomous agents to perform BGP routing analysis, RPKI validation, and network prefix visibility checks.api · developer-tools · score 81/100 · checked 2026-09-27 · what we found
riskpulse.theaslangroupllc.comA suite of intelligence endpoints providing travel safety alerts, country risk profiles, and business risk analysis using automated payments for access.api · ai-and-agents · score 94/100 · checked 2026-09-27 · what we found