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Claude Code Issues / #2308

Documentation error: SSE server with custom headers

Status Fixed / completed
Maintainer reply None cached
Activity 2 comments · opened Jun 19, 2025 · closed Nov 29, 2025

In the documentation for Configure MCP servers it states that environment variables should be used to add an SSE server with custom header.

# Example: Adding an SSE server with custom headers
claude mcp add --transport sse api-server https://api.example.com/mcp -e X-API-Key=your-key

But the correct way for SSE and HTTP transports is to set customer header like this:

claude mcp add --transport sse api-server https://api.example.com/mcp -H "X-API-Key: your-key"

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