GitHub Copilot CLI MCP setup

Use this page to connect Sendmux MCP to your AI client.

Local stdio

Install the local package once:

pip install sendmux-mcp

Use a mailbox key for Mailbox or Sending:

export SENDMUX_MBX_KEY=smx_mbx_...

Use a root key for Management:

export SENDMUX_ROOT_KEY=smx_root_...

copilot mcp add sendmux-mailbox \
  --env SENDMUX_API_KEY=smx_mbx_... \
  -- sendmux-mcp-mailbox

Start a local HTTP MCP server:

SENDMUX_API_KEY=smx_mbx_... \
SENDMUX_MCP_HTTP_BEARER_TOKEN=local-mcp-token \
sendmux-mcp-mailbox --transport http --host 127.0.0.1 --port 8765

Use http://127.0.0.1:8765/mcp as the client URL.

copilot mcp add --transport http \
  --header "Authorization: Bearer local-mcp-token" \
  sendmux-local http://127.0.0.1:8765/mcp