---
title: "HTTP MCP 用 env_http_headers 读自定义头"
filename: "~/.codex/config.toml"
canonical: /templates/mcp-http-env-headers/
---

# HTTP MCP 用 env_http_headers 读自定义头

左边是头名，右边是变量名。缺变量会静默不带头。密钥不要写进 http_headers。Bearer 仍用 bearer_token_env_var。

```
[mcp_servers.docs]
url = "https://mcp.example.com/mcp"
enabled = true

[mcp_servers.docs.env_http_headers]
X-Api-Key = "DOCS_API_KEY"

```