O3 Search MCP Server

MCP server that enables AI agents to perform intelligent web searches using OpenAI's o3 model with natural language queries

Local serverstdio

What is the O3 Search MCP Server?

MCP server that enables AI agents to perform intelligent web searches using OpenAI's o3 model with natural language queries.

What O3 Search MCP does

MCP server that enables the use of OpenAI's high-end models and their powerful web search capabilities. By registering it with any AI coding agent, the agent can autonomously consult with OpenAI models to solve complex problems.

Practical notes

  • Maintained by yoshiko-pg.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

How to install the O3 Search MCP Server

claude mcp add o3-search --env OPENAI_API_KEY=your-value --env OPENAI_MODEL=your-value --env SEARCH_CONTEXT_SIZE=your-value --env REASONING_EFFORT=your-value --env OPENAI_API_TIMEOUT=your-value --env OPENAI_MAX_RETRIES=your-value -- npx -y o3-search-mcp

Configuration

VariableDescriptionRequired
OPENAI_API_KEYCredential the server authenticates with.Yes
OPENAI_MODELConfiguration value read at startup.Optional
SEARCH_CONTEXT_SIZEConfiguration value read at startup.Optional
REASONING_EFFORTConfiguration value read at startup.Optional
OPENAI_API_TIMEOUTConfiguration value read at startup.Optional
OPENAI_MAX_RETRIESConfiguration value read at startup.Optional

Example prompts to try

  • “Use O3 Search MCP to OPENAI API KEY.”
  • “Use O3 Search MCP to OPENAI MODEL.”
  • “Use O3 Search MCP to SEARCH CONTEXT SIZE.”

Frequently asked questions

MCP server that enables AI agents to perform intelligent web searches using OpenAI's o3 model with natural language queries Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.