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 JSON registry of Model Context Protocol agents and their capabilities, including identity, escrow, and provenance services.
ai-and-agents
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This API provides real-time financial news sentiment scores for crypto, equities, and macro topics.
finance-and-crypto
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An API service that provides website audits for SEO, crawlability, and security headers.
developer-tools
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Vimmerse provides an API for generating and editing images, videos, audio, and multi-scene stories from text prompts and media URLs.
ai-and-agents
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This service provides paid access to daily data exports from US public sources such as the Federal Register, product recalls, earthquakes, and SEC filings in JSON or CSV formats.
data-and-analytics
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An OpenAI-compatible API providing chat completions and text embeddings with pay-per-call payments using USDC on Base.
ai-and-agents
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A utility API providing services such as DNS lookups, domain data, cryptographic hashing, and JSON validation for agents and operators.
developer-tools
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The site offers API endpoints to parse, validate, format, and compare phone numbers using libphonenumber metadata.
developer-tools
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An API providing English word definitions, etymology, pronunciation, and translations sourced from Wiktionary.
developer-tools
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An API service for AI agents to verify SEC Form D private-placement filings using issuer names or CIKs.
finance-and-crypto
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This API provides PulseChain blockchain data and on-chain document notarization services.
finance-and-crypto
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An API service for verifying EVM addresses and checking balances across multiple blockchain networks.
finance-and-crypto
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Technical specifications for the SML Verdict Protocol API endpoint.
developer-tools
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An API service that provides FDA recall screening for products, firms, or brands using openFDA data.
health
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A pay-per-call web search and page extraction API for AI agents.
ai-and-agents
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An API service that provides scores and data regarding a website's readiness for AI agents and LLMs.
ai-and-agents
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An API that returns wallet balances for multiple EVM chains, Solana, and Tron in a single HTTP call.
finance-and-crypto
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This API provides perpetual futures funding rate intelligence across OKX, Hyperliquid, and dYdX.
finance-and-crypto
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sg-cm-kg.aiapi
A knowledge graph providing Singapore capital markets data, including issuer records and disclosures, for AI agents via MCP and A2A protocols.
finance-and-crypto
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An API for verifying US nonprofit status using EINs via the x402 protocol on the Base network.
ai-and-agents
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A pay-per-request API that provides signed social media data for X, TikTok, and other platforms using USDC on Base.
developer-tools
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A service providing pay-per-call AI capabilities such as model inference, image generation, and agent-to-agent data transfers using USDC.
ai-and-agents
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An API that converts web pages into structured JSON and Markdown for use in AI agents and RAG pipelines.
ai-and-agents
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This API provides real-time SEC EDGAR filings, including 8-K events and Form 4 insider trades, in structured JSON format.
finance-and-crypto
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This API provides pay-per-request AI inference and various data search endpoints using USDC on the Base network.
ai-and-agents
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The site offers a collection of pay-per-call API endpoints for autonomous agents to perform tasks like text processing, web scraping, and blockchain verification.
ai-and-agents
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An API that provides current currency exchange rates using ECB data.
finance-and-crypto
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An API for AI agents to query bridge condition data from the FHWA National Bridge Inventory.
data-and-analytics
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The GridHub API provides access to energy grid data including demand, generation, price, and carbon intensity.
data-and-analytics
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A service providing Bitcoin market-regime and state-transition data through protected API endpoints for trading and audit agents.
finance-and-crypto
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An API that allows AI agents to request human assistance for tasks requiring social judgment, linguistic intuition, or real-world actions.
ai-and-agents
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An API service providing text translation and language detection for agent networks on the Base blockchain.
ai-and-agents
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An API that provides access to ClinicalTrials.gov data, including trial searches, study records, adverse events, and results.
health
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This service provides pay-per-call API endpoints for accessing Hacker News data, including domain statistics, trending topics, and user profiles.
data-and-analytics
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An API for checking open-source dependency vulnerabilities, SBOMs, and specific CVEs using OSV and CISA KEV data.
developer-tools
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An API that provides currency exchange rates based on European Central Bank euro reference rates.
finance-and-crypto
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BuiltWith provides APIs for accessing web technology data, website relationships, and technology lists.
developer-tools
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This API provides access to NIH biomedical grant data, including investigator profiles, organization funding, and project details.
health
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An API that provides sentiment scores for various cryptocurrencies based on recent news headlines.
finance-and-crypto
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A service that provides pre-payment checks for AI agents to verify endpoint prices and screen payment addresses against freeze lists.
ai-and-agents
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An API providing US retail point-of-sale sales and units data for approximately 380 consumer companies.
data-and-analytics
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An API service providing airline lookup, callsign conversion, and flight number parsing based on a 2017 OpenFlights dataset.
data-and-analytics
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An API that provides cited web evidence from user-provided URLs and US weather data for AI agents.
ai-and-agents
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A pay-per-call API for VIN decoding and structural validation for AI agents using the x402 protocol on the Base network.
ai-and-agents
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An API that maps news headlines to relevant Polymarket prediction markets for trading agents.
finance-and-crypto
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An API that provides cryptocurrency prices, market cap, and volume data for various tokens and chains.
finance-and-crypto
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An API for verifying FDA 510(k) device clearances using USDC on the Base network.
health
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A pay-per-call API for filtering JSON and NDJSON event logs using Base USDC.
developer-tools
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An API providing company registry and financial data for businesses in Sweden, Norway, Finland, and the United Kingdom.
data-and-analytics
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An API that provides AI-synthesized home intelligence data such as maintenance checklists, improvement ROI analysis, and neighborhood research.
ai-and-agents
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This service provides real-time USDC/USD price feeds, payment amount validation, and market data on the Base network.
finance-and-crypto
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BeliefState provides financial analyst research and stock theses via API and MCP for AI agents.
finance-and-crypto
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A service providing per-request data for AI agents, including weather probability distributions and Federal Reserve event calendars, via USDC payments.
ai-and-agents
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An API providing product safety intelligence, including recalls and safety ratings, for AI agents.
data-and-analytics
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The site provides API endpoints for validating bank routing numbers, BIC codes, card numbers, US EINs, EU VAT numbers, and IBANs.
finance-and-crypto
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ViewportWitness provides automated website checks including viewport screenshots, accessibility evidence, visual comparison, and HTML extraction via an API.
developer-tools
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An API providing small business calculators for quotes, estimates, and late fees.
productivity
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An API providing cryptocurrency quantitative analysis tools including backtesting, market regime signals, and token scam checks.
finance-and-crypto
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An API providing pharmacokinetic simulations and reconstitution calculations for various compounds.
health
-
An API service providing web intelligence tools such as markdown conversion, metadata extraction, and company enrichment for AI agents.
ai-and-agents
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An API service providing web extraction, cryptocurrency price and balance checks, and YouTube media extraction on the Base network.
ai-and-agents
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A test endpoint for verifying x402 payment integration and smoke-testing clients.
developer-tools
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The service provides an API for AI agents to obtain US phone numbers for two-way SMS and MMS messaging.
ai-and-agents
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An API service for generating and inspecting UUIDs, including support for UUIDv7 and UUIDv4.
developer-tools
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This site provides an API for performing various time series calculations including moving averages, autocorrelation, and outlier detection.
data-and-analytics
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An API providing DeFi risk assessment services such as sanctions screening and transaction simulation for AI agents.
ai-and-agents
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An API providing cryptocurrency and web data, including wallet balances, transaction status, and web page fetching, for AI agents.
ai-and-agents
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An API providing mental health intelligence, including assessments, therapy matching, and coping techniques, designed for use by AI agents.
health
-
An API providing Latin American economic data including currency exchange rates, commodity prices, and Argentina's blue dollar spread.
finance-and-crypto
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This API provides access to historical and current Brazilian inflation and interest rate data.
finance-and-crypto
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An API service for checking federal enforcement actions, court records, or filings against companies.
data-and-analytics
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This API provides tools to normalize store prices and pack sizes into common units such as kilograms or liters using open data sources.
data-and-analytics
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This API provides solvers for mathematical optimization problems such as assignment, bin-packing, interval scheduling, and knapsack problems.
developer-tools
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The site offers paid API endpoints for autonomous agents to monitor and analyze the Cosmos interchain ecosystem.
finance-and-crypto
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An API providing various photography calculations such as depth of field, exposure value, and crop factor.
design-and-creative
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An API service providing OFAC wallet screening, token verdicts, and company research data.
finance-and-crypto
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An API providing agricultural commodity intelligence, including prices and trend data for various crops and cattle.
data-and-analytics
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This API provides real-time transaction costs in USD for various EVM-compatible blockchain networks.
finance-and-crypto
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The site provides paid API endpoints for autonomous agents to analyze DAO and NFT data, including governance risk and wash-trading detection.
finance-and-crypto
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The site provides a football intelligence API offering endpoints for match previews, fantasy football data, and betting analysis.
data-and-analytics
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This service provides an API and MCP interface for discovering and accessing paid x402 endpoints and liquidity pool data.
ai-and-agents
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An API providing on-chain analytics including whale tracking, DEX volume, and DeFi protocol TVL shifts.
finance-and-crypto
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This API provides cross-market systemic and contagion-cascade risk signals.
finance-and-crypto
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This service provides access to World Bank economic and social indicators through various paid API endpoints.
data-and-analytics
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api.polym.ukapi
This API provides Polymarket market-flow data and UMA resolution base rates for machine consumers.
finance-and-crypto
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This site provides pay-per-call API endpoints for retrieving various data profiles and identifiers from Wikidata.
data-and-analytics
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A pay-per-call API service providing endpoints for date and time arithmetic, such as business days, overtime, and pay periods.
developer-tools
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A pay-per-call API service for retrieving domain registration, DNS records, and email authentication information.
developer-tools
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buy.fizzl.euapi
An API service that enables AI agents to purchase and receive answers from paid third-party APIs using cryptocurrency.
ai-and-agents
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This service offers API endpoints for word-related queries including rhymes, synonyms, anagrams, and Scrabble scores.
developer-tools
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An API service that extracts checkable claims from AI-generated answers and verifies them using various public data sources.
ai-and-agents
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This site provides a real-time cryptocurrency market data API for AI agents and quantitative traders, covering prices, derivatives, and various market metrics.
finance-and-crypto
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An API service providing deduplicated cryptocurrency news headlines and links from multiple outlets for AI agents.
finance-and-crypto
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An API providing URL intelligence services including status checks, redirect chains, SSL expiry, and metadata extraction.
developer-tools
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This API provides pay-per-request datasets for autonomous agents, including information on Steam, FIFA, and news.
ai-and-agents
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This service provides pay-per-call API endpoints for B2B person and organization enrichment data intended for autonomous AI agents.
ai-and-agents
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An API providing blockchain monitoring tools and web data extraction services.
finance-and-crypto
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A pay-per-call web reader API for AI agents that provides markdown or metadata from web pages and PDFs using USDC payments.
ai-and-agents
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The site provides API endpoints for autonomous agents to validate data within EU commerce documents and product pages.
ai-and-agents
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An API service providing token risk verdicts and smart contract security scans for AI agents and developers.
finance-and-crypto