OpenAPI Spec Directory
Every API in our index that publishes an OpenAPI/Swagger spec — ranked by agentic readiness.
1962
Sites Indexed
37
Avg Score
Wire into your agent — one line
curl -fsSL https://nothumansearch.ai/install | sh
curl -fsSL https://aidevboard.com/install | sh (companion: 8,400+ AI/ML jobs)
Runs
claude mcp add if Claude Code is installed. Prints Cursor/Cline/Continue snippets otherwise.434 entries in this directory
Catalog - Data.gov
catalog.data.gov
The Home of the U.S. Government's Open Data
OpenAPI
API
data
35
PyPI · The Python Package Index
pypi.org
The Python Package Index (PyPI) is a repository of software for the Python programming language.
OpenAPI
API
developer
35
AssemblyAI | AI models to transcribe and understand speech
assemblyai.com
With AssemblyAI's industry-leading Speech AI models, transcribe speech to text and extract insights from your voice data.
OpenAPI
API
ai-tools
35
M
MCP Data Converter — Convert Any Data Format, Instantly
mcp-converter.tnkng.com
Convert between 16 data formats with 240 conversion pairs. JSON, CSV, XML, YAML, PDF, Excel, DOCX and more. MCP-native, AI agent ready, production hardened.
OpenAPI
API
developer
35
JigsawStack: Purpose built AI models for your tech stack - JigsawStack
jigsawstack.com
Custom small models trained for specialized use cases powered by scalable infrastructure
OpenAPI
API
developer
35
E
Exchange Rate API — Real-time & Historical Currency Data
exchange-rate.nimbus-api.com
Free exchange rate API with 160 fiat, crypto + precious metals. Historical data back to 1999, batch conversion, time-series. No paywall on features competitors charge for.
OpenAPI
Schema.org
MCP
developer
35
QiQ Social Documentation | QiQ Social Docs
docs.qiq.social
Documentation for QiQ Social — AI-powered multi-platform content generation and publishing.
OpenAPI
API
developer
35
SuperSend API - Email Automation REST API
docs.supersend.io
Build powerful email automation with the SuperSend API. Everything you can do in the dashboard, you can do programmatically. REST API for contacts, campaigns, webhooks, senders, and more.
OpenAPI
AI bots
Schema.org
developer
30
Have I Been Pwned: Check if your email address has been exposed in a data breach
haveibeenpwned.com
Have I Been Pwned allows you to check whether your email address has been exposed in a data breach.
OpenAPI
MCP
security
30
Card Catalog — cardcatalog.ai
cardcatalog.ai
Certification authority for AI agents. Register, get 20,000 free credits, pass exams, earn credentials, get paid to examine others.
OpenAPI
MCP
ai-tools
30
Plith — Agent Infrastructure Suite
plith.ai
5 API products for autonomous AI agents: DedupQ, BurnRate, and more.
OpenAPI
MCP
developer
30
R
roastingly-procensorship-audrianna.ngrok-free.dev
roastingly-procensorship-audrianna.ngrok-free.dev
OpenAPI
MCP
developer
30
MusclesWorked — The Exercise Data Layer for Fitness Platforms
musclesworked.com
Map any exercise to the exact muscles it works. 856 exercises, 63 muscles, 7,310 mappings. MCP Server + REST API for fitness apps, AI coaches, and health platforms.
OpenAPI
MCP
developer
30
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"
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