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OpenAPI Spec Directory

Every API in our index that publishes an OpenAPI/Swagger spec — ranked by agentic readiness.

4311
Sites Indexed
37
Avg Score
607 entries in this directory
autario | The Data Layer for AI Agents and Data Apps
autario.com
Free verified data for humans, machines, and AI agents. Thousands of datasets from World Bank, IMF, Eurostat, FRED. REST API and MCP support for Claude, ChatGPT, Gemini.
llms.txt OpenAPI API AI bots Schema.org MCP ai-tools
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Angshuman Gupta | Senior Product Leader
angshumangupta.com
Angshuman Gupta is a seasoned Product Management professional with expertise in building scalable products. Formerly at Ola and Zeta, specializing in full-stack product development and tech leadership.
llms.txt ai-plugin OpenAPI API productivity
80
+25 llms.txt +20 ai-plugin missing +10 MCP
EasySend - Free Instant File Sharing | No Signup Required
easysend.co
Send files instantly with no signup. Drag, drop and share with a link. Free up to 1GB with E2E encryption. REST API, Slack, VS Code, GitHub Action and Claude Code integrations.
llms.txt OpenAPI API AI bots Schema.org MCP security
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Coin Railz | Payment Infrastructure for AI Agents — API Key in 60 Seconds
coinrailz.com
Let your agents buy DeFi, IoT, satellite data, and prediction market feeds autonomously — and earn yield on idle USDC via our ERC-4626 vault on Base. API key in ~60 seconds via card, or x402 on-chain USDC. From $0.05/call.
llms.txt ai-plugin OpenAPI Schema.org MCP developer
80
+25 llms.txt +20 ai-plugin missing +15 structured API
Plith Rigor — AI Competitive Scans, Code Reviews, SWOT & Gap Analyses
plith.ai
Submit a task, receive a structured deliverable. AI-powered competitive scans, SWOT analyses, code reviews, gap analyses, solution designs, and bug diagnosis — quality-scored, methodology-driven. Start free.
llms.txt OpenAPI API AI bots Schema.org MCP health
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
B
BTCFi API — Bitcoin + BTCFi Data for AI Agents
btcfi.aiindigo.com
Agent-native Bitcoin data, intelligence, BTCFi, security, ZK proofs & real-time streams via x402 micropayments. 31 endpoints. No tokens. No subscriptions. Just ship.
llms.txt OpenAPI API AI bots Schema.org MCP ai-tools
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Програма на Театри, Балет, Опера, Мюзикъл, Концерти и Културни събития в София
sofiastage.com
Актуална програма за събития в София – театър, концерти, опера, балет и барове. Търси по дата и място и открий какво се случва.
llms.txt ai-plugin OpenAPI API data
80
+25 llms.txt +20 ai-plugin missing +10 MCP
AgentDeals — Pricing Context for AI Agents
agentdeals.dev
1571+ free tier deals across 66 categories — developer tools, cloud infrastructure, and consumer services. Give your AI agent pricing context for better recommendations, or browse deals directly.
llms.txt OpenAPI API AI bots Schema.org MCP developer
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Haruspex - AI-Powered Investment Intelligence
haruspex.guru
Make smarter investment decisions with AI-powered stock analysis across 20+ dimensions including fundamentals, geopolitics, supply chain, and sentiment. Free paper trading sandbox included.
llms.txt OpenAPI API AI bots Schema.org MCP finance
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
BotVisibility | How visible is your product to AI agents?
botvisibility.com
Scan any URL and get your BotVisibility score in seconds. We check for llms.txt, agent-card.json, OpenAPI specs, CORS headers, and more.
llms.txt OpenAPI API AI bots Schema.org MCP ai-tools
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
T
True Value Rankings
truevaluerankings.com
Independent cryptocurrency fundamental analysis across 8 metrics. Transparent methodology rooted in Sound Value principles.
llms.txt OpenAPI API AI bots Schema.org MCP finance
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Buildability™ — Know What You Can Build in 20 Seconds
readypermit.ai
Instant zoning, environmental risk & Buildability Score™ analysis from 20+ government APIs for any U.S. property. Free first report. What consultants charge $3,500+ for — delivered in 20 seconds.
llms.txt OpenAPI API AI bots Schema.org MCP ai-tools
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Agent Einstein — Autonomous Crypto Intelligence AI Agent | emc2ai.io
emc2ai.io
Agent Einstein is an autonomous AI agent for on-chain crypto intelligence: whale tracking, smart-money flow, security audits, MEV detection, prediction markets, autonomous trading and cross-chain DeFi. Pay-per-use via x402, A2A, MCP and ACP across 10+ chains.
llms.txt OpenAPI API AI bots Schema.org MCP finance
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
PeerPush - Get Found by People and AI
peerpush.net
PeerPush is the product discovery platform for people and AI. Structured product data makes your product discoverable by humans and AI assistants alike. A supportive builder community helps you gain traction. Launch once, get found everywhere.
llms.txt OpenAPI API AI bots Schema.org MCP ai-tools
80
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
PlaceMania.sk - Atlas netradičných miest a odbočiek
placemania.sk
Atlas netradičných miest, ktoré sa oplatí pridať do itinerára. Objav odbočky v destinácii, kam sa chystáš.
llms.txt ai-plugin OpenAPI Schema.org MCP other
80
+25 llms.txt +20 ai-plugin missing +15 structured API
Resend · Email for developers
resend.com
The best way to reach humans instead of spam folders. Deliver transactional and marketing emails at scale.
llms.txt OpenAPI API Schema.org MCP communication
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Home Remodeling & Countertops in Brevard County | Picture Perfect Projects
pictureperfectprojects321.com
Premium kitchen and bathroom remodeling, custom countertops, and cabinet painting in Brevard County. Local fabrication, no subcontracted installers.
llms.txt ai-plugin OpenAPI AI bots Schema.org ai-tools
75
+25 llms.txt +20 ai-plugin missing +15 structured API
Jonatan Miarecki
miarecki.eu
Tools and services hosted on miarecki.eu, such as the Web Key Directory checker.
llms.txt ai-plugin OpenAPI AI bots Schema.org other
75
+25 llms.txt +20 ai-plugin missing +15 structured API
PQS - A Quality Gate For Prompts
promptqualityscore.com
A Quality Gate For Prompts. Before they break production. Score any AI prompt against 8 dimensions, see what's weak, and get the fixed version in seconds.
llms.txt OpenAPI API AI bots MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
PQS - A Quality Gate For Prompts
pqs.onchainintel.net
A Quality Gate For Prompts. Before they break production. Score any AI prompt against 8 dimensions, see what's weak, and get the fixed version in seconds.
llms.txt OpenAPI API AI bots MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Global Business Hotels | Exclusive Rates for Work & Leisure
businesshotels.com
Experience the gold standard in travel. Book the world’s best hotels with business-class amenities and preferred rates. Smart luxury for work & play.
llms.txt ai-plugin OpenAPI AI bots Schema.org ecommerce
75
+25 llms.txt +20 ai-plugin missing +15 structured API
Artidrop — Share HTML & Markdown from any AI agent
artidrop.ai
Ask your AI to create a report, then share it with one link. Works with Claude Code, Manus, Codex, and more — no login required.
llms.txt OpenAPI API Schema.org MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
api.prereason.com
api.prereason.com
llms.txt OpenAPI API AI bots MCP finance
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
SansFiction — a digital library for books
sansfiction.com
SansFiction is the quiet room for your reading life — track, rate, and rediscover every book that changed you, alongside friends who actually get it.
llms.txt ai-plugin OpenAPI AI bots Schema.org education
75
+25 llms.txt +20 ai-plugin missing +15 structured API
Chiark — Agent Quality Index
chiark.ai
Quality index for AI agent services. Operational scores measuring reliability across the agent ecosystem.
llms.txt OpenAPI API AI bots MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
FARCOM Industrial — Variadores de Frecuencia y Arrancadores Suaves | Monterrey
store.farcomindustrial.com
FARCOM Industrial SA de CV: Tu fuente #1 para variadores Danfoss, arrancadores suaves Benshaw, corrección de factor de potencia. 2,600+ productos. Monterrey, México.
llms.txt ai-plugin OpenAPI AI bots Schema.org ecommerce
75
+25 llms.txt +20 ai-plugin missing +15 structured API
M
mcp.coinpaprika.com
mcp.coinpaprika.com
llms.txt OpenAPI API AI bots MCP developer
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
DebateTalk - Multi-Model Chat with Specialized AI Roles
debatetalk.ai
A group chat where specialized AI models debate your questions from every angle. Experts in business, medicine, law, finance, research, and engineering.
llms.txt ai-plugin OpenAPI AI bots Schema.org ai-tools
75
+25 llms.txt +20 ai-plugin missing +15 structured API
Automated Music Promotion for Spotify & YouTube | Dynamoi
dynamoi.com
Automated Spotify and YouTube campaigns for artists and labels, combining managed ads, analytics, distribution, and first-party music revenue data.
llms.txt OpenAPI API Schema.org MCP productivity
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Overview | SpaceXAI Docs
docs.x.ai
Learn how to use our products and services
llms.txt OpenAPI API Schema.org MCP developer
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin

Wire NHS into your agent — MCP server

Add Not Human Search as an MCP tool. Your agent can call search_agents, get_site_details, get_stats, and submit_site at runtime.

Claude Code
claude mcp add --transport http nothumansearch https://nothumansearch.ai/mcp
Other clients: point any MCP-compatible tool at https://nothumansearch.ai/mcp (streamable-http transport).

Use NHS via REST

Prefer plain HTTP? Hit the search endpoint directly.

Search API
curl "https://nothumansearch.ai/api/v1/search?q=payment+API"
Agent Docs
llms.txt OpenAPI spec ai-plugin.json

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