fix(mcp): configure Codex remote auth env#924
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Summary
bearer_token_env_var = "RAILWAY_API_TOKEN".url = "https://mcp.railway.com"as incomplete sorailway setup agent --remote/railway mcp install --remote --agent codexcan repair them.Why
Codex supports bearer-token env vars for streamable HTTP MCP servers. A URL-only remote Railway MCP config can leave Codex with an unauthenticated remote MCP server until a separate OAuth login happens. Using
RAILWAY_API_TOKENmatches Railway's documented account/workspace token environment variable and works for headless/agent/tmux launches where OAuth state is not available.Testing
cargo fmt --checkcargo test codex_remoteHOME=$(mktemp -d) cargo run --quiet -- mcp install --agent codex --remote.codex/config.tomlcontainsbearer_token_env_var = "RAILWAY_API_TOKEN"and the remote MCP URL