Score colors: 90–100 Excellent · 70–89 Good · 50–69 Needs work · 0–49 Needs urgent work. The score counts what AI crawlers run into when they read the site without JavaScript. Every listed site is re-checked for free every 30 days; a paid check re-scores it within the hour.
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A paid API for AI agents to verify academic citations, DOI resolution, and retraction status.
ai-and-agents
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An OpenAPI specification for a blockchain explorer gateway providing data for Solana, Bitcoin, Bitcoin Cash, and Ethereum including blocks and transactions.
finance-and-crypto
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A machine-to-machine service for verifying Italian companies through authoritative registers and EU validation services.
ai-and-agents
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An API that provides structured reviews for marketing copy and business proposals.
ai-and-agents
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An API that provides risk assessments for airport disruptions and missed flight connections using FAA and weather data.
data-and-analytics
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An API providing English translations and AI-summarized signals for South Korean corporate filings with pay-per-call blockchain settlement.
finance-and-crypto
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An API that provides current and historical US Consumer Price Index inflation data with summary analysis, payable via USDC.
finance-and-crypto
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An OpenAPI specification providing pay-per-request blockchain intelligence services and EVM wallet analysis for AI agents via x402 payments.
finance-and-crypto
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aproxpay.comapi
A residential proxy service for AI agents that uses the x402 protocol for per-request USDC payments on the Base network without requiring accounts or API keys.
developer-tools
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A marketplace for Venice AI inference providing an OpenAI-compatible gateway where users can access models via USDC or earn yield by lending idle DIEM.
ai-and-agents
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The site provides a carbon intelligence API for calculating CO2e emissions from activities, transactions, and logistics with support for pay-per-call payments via the x402 protocol.
ai-and-agents
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you.comapi
This site provides access to real-time web intelligence APIs including search, content retrieval, and synthesized research for agentic applications.
developer-tools
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An interactive Swagger UI documentation page for the Aidress AI discovery and settlement system API.
ai-and-agents
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An API for accessing prediction market data from platforms like Kalshi and Polymarket with pay-per-call micropayment support on the Base network.
finance-and-crypto
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Provides per-minute historical market data for Hyperliquid, including open interest, candles, and trades, accessible via a pay-per-request API using USDC.
finance-and-crypto
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Interzoid provides a platform for data matching, entity resolution, and data enrichment through a variety of APIs and processing tools.
developer-tools
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An API gateway providing access to multiple AI models including GPT, Claude, and Gemini through a single interface.
developer-tools
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Provides API access to Brazilian company registration, sanctions, public contracts, and market data using the x402 payment protocol.
data-and-analytics
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This platform provides programmatic tracking and analysis of SEC filings for US spot crypto ETFs via an API and a terminal dashboard.
finance-and-crypto
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paylog.devapi
An API and CLI tool that provides on-chain spending history and breakdowns for AI agents using MPP and x402 services.
ai-and-agents
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Relaystation offers a pay-per-call API and Model Context Protocol tools for AI agents and developers to handle file storage, document signatures, and state management without accounts.
ai-and-agents
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A pay-per-call gateway that uses USDC to provide access to various data endpoints.
data-and-analytics
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A service providing machine-readable data and structured intelligence for tokenized real-world assets for AI agents and developers.
finance-and-crypto
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A pay-per-call API for searching US building permits, contractors, and zoning decisions using x402 or MPP micropayments.
developer-tools
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vokko.euapi
A multi-protocol index and API that probes web hosts for various agent-related capabilities and protocols.
ai-and-agents
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A service that provides Claude-generated jokes through an API using the x402 payment protocol.
ai-and-agents
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402agent.aiapi
A service that enables autonomous agents to discover, pay for, and receive structured intelligence through an API.
ai-and-agents
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MoltBillboard provides discovery and attribution infrastructure for AI agents to find, execute, and report on commercial placements.
ai-and-agents
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A service providing pay-per-session browser automation with AI-powered control via an API.
ai-and-agents
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A deterministic data-reliability gate for AI agents that evaluates JSON datasets for errors such as duplicates, nulls, and impossible values.
ai-and-agents
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tereno.xyzapi
Tereno provides a verification and cooperation layer for autonomous agents to purchase and reuse verified information on the Base network.
ai-and-agents
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orcpin.devapi
An agent-native x402 API providing on-chain wallet snapshots, DeFi position data, and endpoint reliability checks on the Base network.
developer-tools
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A catalog of 219 paid data APIs for AI agents covering prediction markets, weather, and economic data, sold per-call via the x402 protocol.
developer-tools
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A pay-per-call data provider for stocks, macro, and crypto information that settles payments on-chain using USDC on Base or Solana.
finance-and-crypto
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A demonstration of the AgentCash Router API featuring various pay-per-call endpoints and integration examples.
developer-tools
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An API providing dependency intelligence, including health scores, typosquat checks, and vulnerability scans for npm and PyPI packages.
developer-tools
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Provides pay-per-call crypto and web3 data endpoints for AI agents via USDC on the Base network.
finance-and-crypto
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Provides verifiable ETH staking and lending yield signals via x402 payment, including accuracy metrics and decision endpoints for autonomous agents.
finance-and-crypto
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A pay-per-request API on the Base network providing museum data and research capabilities for autonomous agents using USDC.
ai-and-agents
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A service providing pay-per-call crypto and web3 data for AI agents, including Solana meme token signals and safety checks.
finance-and-crypto
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A coin price API service on the Base network that requires a 0.001 USDC payment per request.
finance-and-crypto
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This page demonstrates a pay-per-call API router with various pricing and authentication modes.
developer-tools
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An API that provides risk assessments for npm, PyPI, and GitHub packages to help coding agents make installation decisions.
developer-tools
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A service for performing on-chain coin flips via the x402 protocol using USDC and Chainlink VRF.
finance-and-crypto
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An API service that scores the quality of paid API listings and marketplace conversion readiness for agents.
ai-and-agents
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A prototype service that allows AI agents to unlock private virtual event rooms by paying USDC through the x402 protocol.
ai-and-agents
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An API endpoint that extracts structured JSON data from uploaded PDF files using LLM processing with a per-request payment model.
developer-tools
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This page provides documentation and a demonstration for a paid API endpoint that returns synthetic ticker analysis data.
finance-and-crypto
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A service providing pay-per-call DeFi and crypto intelligence for AI agents using USDC on the Base network.
finance-and-crypto
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An API that provides intelligence on Chile's public-sector buyers using official procurement data.
data-and-analytics
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An API endpoint that detects and redacts personally identifiable information such as names, emails, and phone numbers from provided text for a fee.
developer-tools
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An API providing AI-generated cryptocurrency trading signals and market intelligence for twenty assets with integrated payment support for AI agents.
finance-and-crypto
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An API endpoint that uses live web search and AI to verify the accuracy of factual claims for a fee.
developer-tools
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An API endpoint that calculates the total USD value of native and ERC-20 token holdings for a given wallet address across several blockchain networks.
finance-and-crypto
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An API endpoint that uses Claude to generate natural-language captions, alt text, tags, and dominant color data from uploaded images for a fee per request.
developer-tools
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An API endpoint that extracts structured data from legal documents including parties, dates, and specific clauses using large language models.
developer-tools
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An API providing reliability, payment, and authenticity data for agents using USDC on the Base network.
ai-and-agents
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An API endpoint that extracts text, detected language, and word count from uploaded images using Claude for processing with a per-request fee.
developer-tools
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An API endpoint that extracts and converts PDF receipts, invoices, or order confirmations into a structured JSON format for a fee per request.
developer-tools
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An API endpoint that converts PDF or plain text resumes into structured JSON data using Claude for a per-request fee.
developer-tools
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An API endpoint that decodes blockchain transaction hashes and provides a plain English summary of on-chain activity for a small fee.
finance-and-crypto
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This service provides machine-readable intelligence and AI-driven crypto market data through API endpoints paid per request in USDC.
finance-and-crypto
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An API providing real-time package information, including versions, licenses, and vulnerabilities for npm, PyPI, and crates.io.
developer-tools
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A pay-per-call API that provides packaged food details like allergens and nutrition data by barcode or name using USDC payments.
health
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An API that converts World Bank economic indicators into momentum signals for GDP growth, inflation, and unemployment using pay-per-call USDC or subscription models.
finance-and-crypto
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An API endpoint that generates QR codes in SVG format and base64 data URIs from provided text or URLs for a per-request fee.
developer-tools
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An API that extracts clean text or hyperlinks from web pages for use in AI prompts.
ai-and-agents
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Deploid Enrich provides work email enrichment for AI agents, using native USDC on the Base blockchain for pay-per-result settlement without subscriptions.
ai-and-agents
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A service that converts RSS, RDF, and Atom feeds into a consistent format.
developer-tools
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A service that verifies Israeli supplier invoices and provides business intelligence for AI agents to determine payment decisions.
ai-and-agents
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Provides an API that parses job posting text into structured JSON data.
developer-tools
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A pay-per-request API for generating or editing images with Gemini that returns base64 PNG output.
ai-and-agents
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An API endpoint that summarizes text up to 50,000 characters into brief, detailed, or bulleted formats using Claude, requiring payment via the x402 protocol.
productivity
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An API endpoint that translates text up to 20,000 characters using Claude, charging a per-request fee via the x402 protocol.
developer-tools
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A security layer for autonomous agents that provides machine-readable risk scores and prompt injection verification via a pay-per-request model on the Base Sepolia testnet.
ai-and-agents
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A paid API endpoint that evaluates untrusted text for potential prompt-injection attempts and returns a structured risk assessment.
ai-and-agents
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An API endpoint that validates data strings like IBANs, credit card numbers, and UUIDs against structural formats and checksums for a fee per request.
developer-tools
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APEX IBIS provides research verification APIs for AI agents, including citation verification and evidence extraction, using a pay-per-request model via USDC.
ai-and-agents
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A heuristic-based API that analyzes URL strings for structural phishing signals and typosquatting patterns for a per-request fee.
developer-tools
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WAKE402 is an infrastructure service for AI agents to schedule future HTTPS callbacks using USDC payments without requiring an account or API key.
ai-and-agents
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This API provides payment security for autonomous agents by verifying transaction details before a payment is executed.
ai-and-agents
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A paid API endpoint that performs currency conversions using live exchange rates and accepts payments via the x402 protocol.
finance-and-crypto
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An API endpoint that validates email syntax, checks for live MX records, and identifies disposable email addresses for a fee per request.
developer-tools
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This API resolves Ethereum Name Service names to addresses and performs reverse lookups for a per-request fee.
finance-and-crypto
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A paid API endpoint that compares live gas prices and USD transfer costs across various EVM-compatible blockchain networks.
finance-and-crypto
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The API provides property due diligence data, including flood zones, tax entities, and zoning context, for US property addresses.
data-and-analytics
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A paid API endpoint that converts numeric values between various units of measurement across several categories using the x402 payment protocol.
developer-tools
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An API providing on-chain data for EVM addresses including balance, transaction count, and contract status for a per-request fee.
finance-and-crypto
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A machine-native risk verification service for AI agents that assesses prompts for injection, contradictions, and unsupported claims using per-request payments on the Base Mainnet.
ai-and-agents
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A machine-to-machine market-data service providing Hyperliquid perpetual-market information to autonomous agents via an HTTP API.
finance-and-crypto
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A paid API endpoint that identifies the ISO 639-1 language code and confidence level of provided text using Claude.
developer-tools
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Link Lens provides an API to convert public URLs into structured data including metadata and readable text.
ai-and-agents
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An API endpoint that uses Claude to analyze text for sentiment, emotion, and confidence scores at a cost of one cent per request.
developer-tools
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This service converts PDFs, JavaScript-rendered pages, and HTML into Markdown for AI agents using a blockchain-based payment mechanism.
ai-and-agents
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An API service that provides risk assessment and execution reports for cryptocurrency wallets and transactions across multiple EVM chains.
developer-tools
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AgentProof offers an API that validates, repairs, and scores structured API responses for AI agents.
ai-and-agents
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A fan-made parody service that provides answers to questions via an API based on the Magic Conch from SpongeBob.
other
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A service that performs risk checks on x402 endpoints to verify reachability, pricing, and safety for AI agents.
ai-and-agents
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An API providing live telemetry, environmental metrics, and logistics utilities for AI agents with payment via USDC on the Base mainnet.
ai-and-agents
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A service providing Japanese public data via pay-per-call APIs using the x402 protocol.
data-and-analytics