OpenAPI Spec Directory

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

951
Sites Indexed
38
Avg Score
Wire NHS into Claude Code
claude mcp add --transport http nothumansearch https://nothumansearch.ai/mcp
313 entries in this directory
A
Agentry
api.agentry.com
Search and discover AI agents. Browse 122+ agents across 11 categories with trust scores, reputation, and live health checks.
llms.txt ai-plugin OpenAPI API data
80
D
DevDrops — x402 Data APIs for the Agent Economy
devdrops.run
43 pay-per-query data APIs powered by x402 micropayments. Property intelligence, prediction markets, sports odds, regulatory feeds, weather, FX, crypto prices, and more. No API keys. No subscriptions. Just USDC.
llms.txt ai-plugin OpenAPI AI bots MCP finance
80
A
TheArtOfService Compliance Intelligence
api.theartofservice.com
Access 692+ compliance frameworks with cross-framework control mapping, gap analysis, and coverage reports.
llms.txt ai-plugin OpenAPI MCP data
75
Agent Domain Search
agentdomainsearch.com
Agent-first domain registration and DNS management. Pay with USDC on Base via x402. No accounts, no API keys.
llms.txt ai-plugin OpenAPI AI bots Schema.org developer
75
DebateTalk - Let AI Models Debate Your Questions
debatetalk.ai
Watch multiple AI models argue both sides of any question, then synthesize the strongest answer. Free to try - no API keys needed.
llms.txt ai-plugin OpenAPI AI bots Schema.org ai-tools
75
B2B Company Data Enrichment and Contact Emails | DataMerge
datamerge.ai
Enrich B2B leads with verified company data and contact emails. 375M+ companies, 20+ data providers combined. Pay-as-you-go from $15/month.
llms.txt OpenAPI API Schema.org MCP ai-tools
75
CrossFin — Cross-Border Crypto Routing Engine for AI Agents
crossfin.dev
Route capital across 14 exchanges (Bithumb, Upbit, Coinone, GoPax, bitFlyer, WazirX, bitbank, Indodax, Bitkub, Binance, OKX, Bybit, KuCoin, Coinbase). AI agents pay per-call with USDC via x402 protocol. Real-time Asia premium, 13 bridge coins, arbitrage signals.
llms.txt ai-plugin OpenAPI MCP ai-tools
75
>Coursera | Courses, Professional Certificates, and Degrees Online
coursera.org
Learn in-demand skills with online courses and Professional Certificates from leading companies like Google, IBM, Meta, and Adobe. Explore flexible programs—from short courses to full degrees.
llms.txt ai-plugin OpenAPI AI bots Schema.org education
75
A
Headless Oracle
api.headlessoracle.com
Cryptographically signed market state verification for 28 global exchanges (equities, derivatives, and 24/7 crypto). Know if NYSE, LSE, CME, or any major exchange is OPEN, CLOSED, or HALTED before your agent acts.
llms.txt ai-plugin OpenAPI MCP data
75
Find Roles Before They Hit the Big Boards | Job Seek
jseek.co
Search millions of jobs scraped directly from thousands of company career pages. Filter by seniority, tech stack, salary, and location, then track every application.
llms.txt ai-plugin OpenAPI AI bots Schema.org jobs
75
Buy TRON Energy & Bandwidth — Save 50% on TRX Fees | PowerSun.vip
powersun.vip
Rent TRON Energy and Bandwidth at the lowest prices. Only 10% commission. AI agents, bots, and developers save 20-50% on USDT transfers and smart contract calls. MCP, REST API, HTTP 402.
llms.txt ai-plugin OpenAPI AI bots Schema.org ai-tools
75
AiPayGen — AI Agent API
api.aipaygen.com
250 AI tools in one API. Multi-model (Claude, GPT-4o, Gemini, DeepSeek, Grok). Pay per call. 1 free call/day + 2 with ads. No subscriptions. No minimums.
llms.txt ai-plugin OpenAPI Schema.org data
70
Home - Foto D&D Kruševac fotograf za venčanja Dejan Nikolić
photo-fotograf.com
Višestruko nagrađivani svadbeni fotograf za venčanja iz Kruševca, Dejan Nikolić, stvara umetničke i emotivne fotografije venčanja. Zabeležite svoj poseban dan na jedinstven način! Kruševac fotograf za venčanja Dejan Nikolić
llms.txt ai-plugin OpenAPI Schema.org ecommerce
70
English | Latest News | informed, clearly
informedclearly.com
Latest global news, clear summaries, and in-depth analysis in one place.
llms.txt ai-plugin OpenAPI Schema.org news
70
A
Agent Module
agent-module.dev
Deterministic EU AI Act compliance knowledge for autonomous agents. Binary logic gates, verified statutory citations, confidence_required: 1.0. August 2026 enforcement deadline.
llms.txt ai-plugin OpenAPI AI bots security
70
AiPayGen — AI Agent API
aipaygen.com
250 AI tools in one API. Multi-model (Claude, GPT-4o, Gemini, DeepSeek, Grok). Pay per call. 1 free call/day + 2 with ads. No subscriptions. No minimums.
llms.txt ai-plugin OpenAPI Schema.org ai-tools
70
The Colony - The home of the AI agent internet
thecolony.cc
The home of the AI agent internet. Share findings, earn from the marketplace, ask questions, and collaborate — all in structured communities.
llms.txt OpenAPI API MCP ai-tools
70
mcp.websitepublisher.ai
mcp.websitepublisher.ai
llms.txt OpenAPI API MCP developer
70
退職代行サービス｜業界最安値2,980円で即日対応｜弁護士・社労士監修｜24時間365日 | 退職あんしん代行
taishoku-anshin-daiko.com
弁護士・社労士監修の退職代行サービス。業界最安値2,980円（追加料金なし）で24時間365日対応。適正な範囲で退職意思の伝達を代行し、即日対応が可能。パワハラ・残業問題・人間関係の悩みを解決し、安心の円満退職をサポート。AI情報案内システム完備（一般的内容確認）。
llms.txt ai-plugin OpenAPI Schema.org productivity
70
Bitpoort | On-chain Data for AI Agents
bitpoort.com
Real-time blockchain data for AI agents. Transactions, whale movements, exchange flows, and trade signals across 500M+ transactions. One API and MCP server, full on-chain RAG.
llms.txt OpenAPI AI bots Schema.org MCP developer
65
AI Site Scorer — AI Readiness Scoring for Agents & Humans
ai-readiness.mingles.ai
Built for AI agents. Analyze any website for AI readiness — pay $0.01 per request via x402 micropayments. No API keys, no subscriptions needed.
llms.txt OpenAPI AI bots Schema.org MCP ai-tools
65
Caliper — Geometry File Metadata API
caliper.fit
Geometry file metadata API for AI agents. Analyze STL, OBJ, PLY, glTF, and point cloud files via MCP or REST. Pay-per-call, no signup required.
llms.txt OpenAPI AI bots Schema.org MCP ai-tools
65
Inlay — Get Inlaid Into AI Answers
inlay.dev
SEO gets you into search results. Inlay gets you into AI answers. Built into every conversation with Claude, ChatGPT, Perplexity, and every AI agent.
llms.txt OpenAPI AI bots Schema.org MCP ai-tools
65
Baozi - Prediction Markets on Solana
baozi.bet
Trade prediction markets on Solana with SOL. Pari-mutuel betting on crypto, sports, politics, culture. 68 MCP tools for AI agents. On-chain settlement.
llms.txt OpenAPI AI bots Schema.org MCP ai-tools
65
OpenCage - Easy, Open, Worldwide, Affordable Geocoding and Geosearch
opencagedata.com
Worldwide forward and reverse geocoding API. Affordable, predictable pricing. GDPR compliant, made with open data, trusted by thousands of developers.
llms.txt OpenAPI API Schema.org data
65
X
XActions — Free AI-Powered X/Twitter Automation Tools | Mass Unfollow, Auto-Follow & More
xactions.app
Free, open-source AI-powered X/Twitter automation tools. Works with Grok, GPT, Claude & MCP servers. Mass unfollow non-followers, auto-liker, growth suite. No API fees, 100% browser-based. The Twitter API alternative.
llms.txt OpenAPI AI bots Schema.org MCP ai-tools
65
Програма на Театри, Балет, Опера, Мюзикъл, Концерти 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 other
65
ReqRes | Free REST API for developers | ReqRes
reqres.in
Free REST API for testing and prototyping with real responses, no signup needed. Or build your own backend with collections, auth, and logs at app.reqres.in.
llms.txt OpenAPI API Schema.org developer
65
AI Agents Marketplace — Discover & Hire AI Agents | nullpath
nullpath.com
The AI agents marketplace for developers. Discover, hire, and pay AI agents instantly with micropayments. No API keys needed—just pay per request starting at $0.001.
llms.txt OpenAPI API Schema.org ai-tools
65
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 AI bots Schema.org MCP ai-tools
65

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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