> ## Documentation Index
> Fetch the complete documentation index at: https://phidatainc.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Dynamic Headers

> Pass request-specific headers from AgentOS through MCPTools to an MCP server.

| Example                                                      | Description                                                                                       |
| ------------------------------------------------------------ | ------------------------------------------------------------------------------------------------- |
| [Client](/examples/agent-os/mcp-demo/dynamic-headers/client) | Forward per-run user and session context from AgentOS to an MCP server with dynamic HTTP headers. |
| [Server](/examples/agent-os/mcp-demo/dynamic-headers/server) | Simple MCP server that logs headers received from clients.                                        |