OpenAPI Spec Directory

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

4191
Sites Indexed
36
Avg Score
498 entries in this directory
Receipt Converter – Receipts to Excel, CSV & PDF
receiptconverter.com
Upload a receipt photo or PDF and get a clean Excel, CSV, JSON, or PDF in seconds. High-precision AI extracts every line item, tax, and total. Free to try, no account needed.
llms.txt OpenAPI API AI bots Schema.org ai-tools
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+25 llms.txt +20 OpenAPI missing +20 ai-plugin
M
MapleBridge | China Supplier Matching for North America Buyers
maplebridge.io
MapleBridge helps North America buyers turn sourcing briefs into China supplier matches by MOQ, certification, market fit, and factory readiness.
llms.txt OpenAPI API AI bots Schema.org ecommerce
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Helius - Solana's Leading RPC and API Platform
helius.dev
Solana RPCs, APIs, gRPC, webhooks, and dedicated infrastructure to build and ship crypto apps, fast. Get started for free in 1 click.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Getting started with Warp and Oz | Warp
docs.warp.dev
Get started with Warp, the Agentic Development Environment, and Oz, the orchestration platform for cloud agents.
llms.txt OpenAPI API MCP developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Cloudflare: Build for the agent era
workers.cloudflare.com
Welcome to Cloudflare - Powering the next generation of applications
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
HOL | Agent Registry, Open Standards & Trust Infrastructure
hol.org
HOL builds open infrastructure for AI agents: universal registry discovery, HCS standards, developer tools, partner working groups, and auditable points on Hedera.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
The intent layer for B2B outbound. | CatchIntent
catchintent.com
CatchIntent finds B2B buyers showing real intent, scores them, and delivers warm leads to your team every day. Push them to your CRM or reach out from the browser extension in one click.
llms.txt OpenAPI API AI bots Schema.org productivity
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Supadata: Web & YouTube to text API for makers
supadata.ai
Supadata is one stop-shop API for makers to read web and YouTube content, ready for AI training and retrieval.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
SubwayInfo.nyc - Real-time NYC Subway Data via MCP
subwayinfo.nyc
The fastest MCP server for NYC transit. Real-time train arrivals, service alerts, and trip planning for Claude, ChatGPT, and AI agents.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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 API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Cross Browser Testing & Mobile App Testing | TestingBot
testingbot.com
Instant access to over 6100 browsers with physical iOS and Android devices. Parallel Testing. Automated Testing. Boost your UI test suite in minutes with TestingBot.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
webclaw — Web Scraping API for LLMs and AI Agents
webclaw.io
Turn any website into LLM-ready markdown, JSON, or structured data. No browser, no Selenium. Handles bot protection. 20x faster than Chrome-based alternatives.
llms.txt OpenAPI API AI bots Schema.org ai-tools
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Financial Datasets | Stock Market API
financialdatasets.ai
Stock market API with real-time and historical financial data for 27,000+ tickers over 30+ years. Financial statements, equity prices, insider transactions, SEC filings, and more.
llms.txt OpenAPI API AI bots Schema.org data
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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DexPaprika MCP Server — Free Real-Time DEX & DeFi Data for AI Agents
mcp.dexpaprika.com
Hosted Model Context Protocol (MCP) server for DexPaprika. Free, no API key: real-time and historical DEX data — liquidity pools, token prices, OHLCV, and swaps across 35+ blockchains. Connect Claude, Cursor, or any MCP agent.
llms.txt OpenAPI API AI bots Schema.org finance
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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fabric-api-393345198409.us-west1.run.app
fabric-api-393345198409.us-west1.run.app
llms.txt OpenAPI API MCP developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Epublys | Online EPUB tools for ebook lovers
epublys.com
Every tool you need to work with EPUBs in one place. Merge, split, compress, convert, and edit EPUB files online. 100% free and easy to use.
llms.txt OpenAPI API AI bots Schema.org productivity
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
VirtualSMS — Receive SMS Online | Real Physical SIMs | 145+ Countries
virtualsms.io
Real SIM cards for OTP verification — 145+ countries, 2500+ services (WhatsApp, Telegram, Discord). From $0.05/code. API + MCP server for developers and AI agents.
llms.txt OpenAPI API AI bots Schema.org developer
70
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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
+25 llms.txt +20 ai-plugin missing +15 structured API
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
+25 llms.txt +20 ai-plugin missing +15 structured API
Context7 - Up-to-date documentation for LLMs and AI code editors
context7.com
Pull up-to-date, version-specific documentation and code examples for any library directly into Cursor, Claude Code, Windsurf, and other AI coding tools.
llms.txt OpenAPI API Schema.org developer
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
YouTube
tally.so
The simplest way to create beautiful, professional forms in seconds. Unlimited forms, unlimited submissions, forever free. Just start typing - no coding needed.
llms.txt OpenAPI API Schema.org productivity
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Full-stack observability for the agentic era | Grafana Labs | Grafana Labs
grafana.com
Avoid lock-in and ensure reliability with Grafana Cloud. The AI-powered platform built on open standards unifies metrics, logs, traces, profiles, and business data.
llms.txt OpenAPI API Schema.org developer
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
CrewAI
crewai.com
The Leading Multi-Agent Platform
llms.txt OpenAPI API Schema.org developer
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
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
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Expired Domain Finder - 218,616 Domains, 37,715 Added Today - CatchDoms
catchdoms.com
Discover thousands of expiring domains from Dynadot, GoDaddy, Catched & DropCatch. Filter by age, backlinks, DA and find hidden gems with our quality score system.
llms.txt OpenAPI API Schema.org developer
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
M
mcp.opencaselaw.ch
mcp.opencaselaw.ch
llms.txt OpenAPI API AI bots data
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
Gift Ideas Finder | Gift Recommendations | Surprise Buddy
surprise-buddy.com
Find the perfect gift with personalized recommendations. Gift ideas for birthdays, Christmas, Valentine's Day, weddings and more. Free gift finder.
llms.txt OpenAPI AI bots Schema.org MCP other
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+25 llms.txt +20 OpenAPI missing +20 ai-plugin
AnchorRegistry™ — The open provenance layer for the agentic economy.
anchorregistry.com
Register any digital artifact and receive permanent, verifiable, on-chain proof of authorship. One payment. No expiry. Verifiable by any human or AI, forever.
llms.txt OpenAPI API AI bots ai-tools
65
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
AI Quick Transcript
quicktranscript.app
llms.txt OpenAPI API AI bots ai-tools
65
+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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