Environment variables - Handshake

Variable	Function
`HANDSHAKE_ADDR`	Sets the loopback address and port for the daemon.
`HANDSHAKE_URL`	Sets the MCP URL that setup gives to agents.
`HANDSHAKE_NO_TELEMETRY`	Disables anonymous usage events when it has a value.
`CODEX_HOME`	Sets a non-default Codex data and configuration directory.

Address example

Set both address values when you require port 8766:

export HANDSHAKE_ADDR=localhost:8766
export HANDSHAKE_URL=http://localhost:8766/mcp
handshake setup

HANDSHAKE_ADDR and HANDSHAKE_URL must use the same port. If you set only HANDSHAKE_ADDR before setup, setup derives HANDSHAKE_URL from that address.

Telemetry example

export HANDSHAKE_NO_TELEMETRY=1
handshake setup

Codex home example

export CODEX_HOME=/Users/alex/codex-data
handshake setup

Set CODEX_HOME before setup so that Handshake writes the MCP registration to the correct Codex directory.