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OpenAPI Spec Directory

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

5744
Sites Indexed
39
Avg Score
986 entries in this directory
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
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
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
pydantic.dev
pydantic.dev
llms.txt OpenAPI API AI bots MCP developer
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Warp | The Open Source Freight Network
wearewarp.com
The open source freight network. Top 20 LTL carrier. 98.2% on-time delivery. Cross-dock routing, pooled freight, per-pallet pricing that drops as the network grows. 1,500+ LTL lanes, 80%+ US LTL zip-to-zip coverage, nationwide FTL, 50+ cross-docks, 38,000+ carriers.
ai-plugin OpenAPI API AI bots Schema.org MCP developer
75
+20 ai-plugin +20 OpenAPI missing +25 llms.txt
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
+25 llms.txt +20 ai-plugin missing +15 structured API
mcp.frihet.io
mcp.frihet.io
llms.txt OpenAPI API AI bots MCP finance
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
FactorGuide — Know the Cost Before You Simplify
factorguide.io
FactorGuide tells AI agents which variable couplings are load-bearing and which can be safely ignored. Send a coupling matrix — no API key, no wallet, no account. Get zone counts, coupling diagnostics, and a calibrated risk assessment for free. Upgrade for full per-pair strategy.
llms.txt OpenAPI API Schema.org MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
AgentBazaar — Skills for humans. Agents for machines.
agentbazaar.tech
Open AI platform: invoke 1078 agents via A2A, 136 skills, 121 autonomous society agents. Download skills, watch AI evolve. Free, no signup.
llms.txt OpenAPI API Schema.org MCP ai-tools
75
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
BeatAPI | Power Your AI Agents with Models, Data & Tools
beatapi.io
Give your agent more capabilities or build them into your product with lower-priced AI models, 1,000+ data APIs, production workflows, and one BeatAPI key.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
TourScanner AI — Tours & Activities Agent, Booking API & MCP
tourscanner.ai
The largest multi-provider tours & activities API. 1,000,000+ activities from 14 providers through a single REST API. Remote MCP server and OpenAPI spec. API keys issued by TourScanner on request.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
System One｜面向 AI Agent 的决策 API 与 TypeScript SDK
system-one.dev
通过 System One 开源 TypeScript SDK 与托管 AI 决策 API，为 Agent 接入结构化选项、评分与概率，用于工具路由、结果排序和条件判断。
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
YourAITools API: pay-per-call x402 tools for AI agents
api.youraitools.co
Pay-per-call x402 APIs for AI agents (USDC on Base). No API keys, no signup: call, get HTTP 402, pay, retry.
llms.txt OpenAPI API MCP data
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Runcrate: GPUs and inference for your agents
runcrate.ai
On-demand GPUs and inference for AI teams and the agents they run. A GPU with a real shell in about four minutes, or open models through one OpenAI-compatible API.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
ViNano AI | AI Image and Video Creation
vinano.ai
ViNano AI is a platform for creating and editing images and generating videos with natural-language prompts and reference images. Choose a supported model and adjust the available settings in your browser.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Amazon 电商数据 API：商品与关键词研究
ecommercedataapi.com
面向 Amazon 商品、关键词、市场、销量、评论、流量和商标研究的电商数据 API，支持开发者构建选品研究和自动化工作流。
llms.txt OpenAPI API AI bots Schema.org other
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Explore the Solana ecosystem | Solana Bulls
solanabulls.com
Find the best companies, protocols, and apps building on Solana.
llms.txt ai-plugin OpenAPI Schema.org other
70
+25 llms.txt +20 ai-plugin missing +15 structured API
AI Headshots for LinkedIn, Dating & Work | Headshotsly
headshotsly.com
Turn one selfie into photos for LinkedIn, dating apps, real estate, law and healthcare. 5 photos in 4K for $4.99. No subscription.
llms.txt OpenAPI API AI bots Schema.org health
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Trading Journal for Active Traders | TheProfitPath
theprofitpath.app
Trading journal for active traders to review performance and psychology, track market events, collaborate, connect integrations, and build better rules with AI coaching.
llms.txt OpenAPI API AI bots Schema.org finance
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
B
Burs-IA · Ciudad visual
burs-ia.com
llms.txt OpenAPI API MCP other
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
musics.name — Music Theory, Notation and Music History
musics.name
A working library of music theory and music history: intervals, harmony, counterpoint, rhythm, tuning and form, plus browser tools you can play.
llms.txt OpenAPI API AI bots Schema.org other
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Free Form Backend & Contact Form for Websites | splitforms
splitforms.com
Point any HTML, React, Next.js or AI-built contact form at one URL and get each submission by email and in a dashboard. 500 free submissions, no card.
llms.txt OpenAPI API AI bots Schema.org communication
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Chessigma – Free Unlimited Chess Game Analysis & Reports
chessigma.com
Chessigma is a free, easy-to-use chess analysis tool that instantly generates detailed reports and insights from your Chess.com, Lichess, or PGN games—no signup required.
llms.txt OpenAPI API AI bots Schema.org other
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
Doc Tools
agentpay-tools.agentpay-apis.workers.dev
PDF to text, RSS/Atom feeds to JSON, sitemaps to URL lists.
llms.txt OpenAPI API MCP developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
Domain & Network Lookup
agentpay-lookup.agentpay-apis.workers.dev
DNS, WHOIS/RDAP, IP ownership and one-call domain reports.
llms.txt OpenAPI API MCP developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
Web Extract
agentpay-extract.agentpay-apis.workers.dev
Any URL to clean, LLM-ready markdown and structured metadata.
llms.txt OpenAPI API MCP developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
A
AgentPay — pay-per-call APIs for AI agents
agentpay.agentpay-apis.workers.dev
Web extraction, domain lookups and document tools for AI agents. Pay per call in USDC via x402 on Base or Algorand.
llms.txt OpenAPI API MCP ai-tools
70
+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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