MCP Servers

o3-search MCP

An MCP server that enables web search capabilities using OpenAI's o3 model, allowing AI assistants to perform text-based web searches and return AI-powered results.

Tools

o3-search

An AI agent with advanced web search capabilities. Useful for finding latest information and troubleshooting errors. Supports natural language queries.

README

o3-search-mcp

An MCP (Model Context Protocol) server that provides web search capabilities using OpenAI's o3 model. The o3-search tool accepts text queries and returns AI-powered search results.

Installation

Using npx (Recommended)

Claude Code:

$ claude mcp add o3 -s user \
	-e OPENAI_API_KEY=your-api-key \
	-e SEARCH_CONTEXT_SIZE=medium \
	-e REASONING_EFFORT=medium \
	-- npx o3-search-mcp

json:

{
  "mcpServers": {
    "o3-search": {
      "command": "npx",
      "args": ["o3-search-mcp"],
      "env": {
        "OPENAI_API_KEY": "your-api-key",
        // Optional: low, medium, high (default: medium)
        "SEARCH_CONTEXT_SIZE": "medium",
        "REASONING_EFFORT": "medium"
      }
    }
  }
}

Local Development Setup

If you want to download and run the code locally:

# setup
git clone git@github.com:yoshiko-pg/o3-search-mcp.git
cd o3-search-mcp
pnpm install
pnpm build

Claude Code:

$ claude mcp add o3 -s user \
	-e OPENAI_API_KEY=your-api-key \
	-e SEARCH_CONTEXT_SIZE=medium \
	-e REASONING_EFFORT=medium \
	-- node /path/to/o3-search-mcp/build/index.js

json:

{
  "mcpServers": {
    "o3-search": {
      "command": "node",
      "args": ["/path/to/o3-search-mcp/build/index.js"],
      "env": {
        "OPENAI_API_KEY": "your-api-key",
        // Optional: low, medium, high (default: medium)
        "SEARCH_CONTEXT_SIZE": "medium",
        "REASONING_EFFORT": "medium"
      }
    }
  }
}

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