What does Semantic API do?

It lets you search and discover APIs across 163+ providers using natural language instead of manually browsing documentation. You describe what you need, and it returns matching APIs with details about their capabilities.

How do I set up the MCP server?

Install via `uvx semanticapi-mcp@0.1.2`, then set the required `SEMANTIC_API_KEY` environment variable with your API key from https://semanticapi.dev. The server communicates over stdio.

Do I need a Semantic API key to use this?

Yes, `SEMANTIC_API_KEY` is required. You can obtain one from https://semanticapi.dev. Without it, the MCP server cannot authenticate requests to the Semantic API service.

How many APIs can I search across?

The server provides access to 163+ API providers with auto-discovery capabilities, so you can find integrations across a wide range of categories and use cases.

Can I use this to compare APIs before choosing one?

Yes, the natural language search lets you query for APIs by features, pricing tier, or authentication method, making it easier to compare options and find the best fit for your project.

MCP ServerSTDIOOfficialv0.1.2

Semantic API MCP Server

Search and discover APIs across 163+ providers using natural language queries. Built for developers who need to find, understand, and integrate third-party APIs without manual documentation hunting.

io.github.peter-j-thompson/semanticapi

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Hosted URL

Local install

Transport

STDIO

Auth

1 required env var

What the Semantic API MCP server does

How models use it and what it is built for.

Search and discover APIs across 163+ providers using natural language queries. Built for developers who need to find, understand, and integrate third-party APIs without manual documentation hunting.

Connect to Semantic API

Local install — runs as a subprocess.

uvx semanticapi-mcp==0.1.2

Environment variables

Configuration this server reads at startup.

SEMANTIC_API_KEYRequiredSecret
Your Semantic API key from https://semanticapi.dev

Resources

Where to find authoritative docs and source for Semantic API.

Example prompts for Semantic API

Paste any of these into Agent Studio after connecting Semantic API.

Find payment processing APIs that support webhooks and recurring billing
Show me weather data providers with free tiers and global coverage
Search for email delivery APIs with built-in template support
Discover authentication providers that offer OAuth2 and SAML

Semantic API MCP server — FAQ

Common questions about connecting and running Semantic API.

What does Semantic API do?
It lets you search and discover APIs across 163+ providers using natural language instead of manually browsing documentation. You describe what you need, and it returns matching APIs with details about their capabilities.
How do I set up the MCP server?
Install via `uvx semanticapi-mcp@0.1.2`, then set the required `SEMANTIC_API_KEY` environment variable with your API key from https://semanticapi.dev. The server communicates over stdio.
Do I need a Semantic API key to use this?
Yes, `SEMANTIC_API_KEY` is required. You can obtain one from https://semanticapi.dev. Without it, the MCP server cannot authenticate requests to the Semantic API service.
How many APIs can I search across?
The server provides access to 163+ API providers with auto-discovery capabilities, so you can find integrations across a wide range of categories and use cases.
Can I use this to compare APIs before choosing one?
Yes, the natural language search lets you query for APIs by features, pricing tier, or authentication method, making it easier to compare options and find the best fit for your project.

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