Semantic API
About
Natural language API discovery — search 700+ API capabilities, get endpoints, auth setup, and code snippets.
Details
- Author
- peter-j-thompson
- Categories
- Search, API, Developer Tools
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Setup
Install Semantic API in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/peter-j-thompson/semanticapi-mcp
Follow the installation instructions in the repository README, then restart your MCP client.
AnMCP (Model Context Protocol)server that lets Claude, ChatGPT, and other LLM agents search and discover APIs using natural language viaSemantic API. Ask for any API capability in plain English and get back endpoint details, parameters, auth info, and code snippets.
Sign up atsemanticapi.devto get your API key.
Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):
{ "mcpServers": { "semanticapi": { "command": "uvx", "args": ["semanticapi-mcp"], "env": { "SEMANTIC_API_KEY": "your-api-key-here" } } } }
{ "mcpServers": { "semanticapi": { "command": "semanticapi-mcp", "env": { "SEMANTIC_API_KEY": "your-api-key-here" } } } }
Search for an API capability using natural language.
- query(string, required) — What you want to do, e.g. "send an email with Gmail"
- auto_discover(boolean, optional, default: true) — Auto-discover new APIs if needed
Example:"Find me an API to convert currencies in real-time"
Deep discovery of a specific provider/API by name and intent.
- provider_name(string, required) — API provider name, e.g. "stripe", "twilio"
- user_intent(string, optional) — What you want to do with this API
Example:Discover Stripe's capabilities for "process a refund"
Analyze any API from its documentation URL.
- url(string, required) — URL of the API documentation
- user_intent(string, optional) — What you want to do with this API
Example:Analyzehttps://docs.example.com/apito generate a provider config
- Semantic API— The hosted API service
- semanticapi-engine— Open source engine (AGPL-3.0)
- semantic-api-skill— Agent framework skill package
- CLI Tool— Command-line interface (pip install semanticapi-cli)
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