The address Phantom AI serves a coding agent at, from PHANTOM_BASE_URL without its /v1: /claude-code (Claude Code adds /v1 itself), or /codex/v1, /cursor/v1 and /coding-agent/v1 for the others.
/v1
/claude-code
/codex/v1
/cursor/v1
/coding-agent/v1
CliError when PHANTOM_BASE_URL is not https (httpsOnly).
The address Phantom AI serves a coding agent at, from PHANTOM_BASE_URL without its
/v1:/claude-code(Claude Code adds/v1itself), or/codex/v1,/cursor/v1and/coding-agent/v1for the others.