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agent-bridge

Google Antigravity CLI

Terminal window
npx -y github:rennerdo30/agent-bridge install antigravity --yes
# Later:
npx -y github:rennerdo30/agent-bridge update antigravity --yes

Requires installed, authenticated agy (verified with 1.2.0 and 1.3.1). Start a new native session after initial installation. Updates keep running sessions on retained code and select new code for the next MCP server start. The plugin includes MCP configuration, lifecycle/permission hooks and a coordination skill. It exposes the same peer, delegation, history and job tools as the existing plugins. Other peers get ask_antigravity and spawn_antigravity, with model, effort (low/medium/high/xhigh/max), session_id, access, terminal_sandbox, bypass_permissions and worktree. Continue with message_subagent or cancel with cancel_subagent; these use the existing durable job lifecycle.

read denies non-reading tools; ask forwards those tool approvals to the supervisor. Both use the installed bridge gate before every tool, with native headless prompting bypassed because 1.2.0 otherwise auto-denies approved calls. edit keeps native Antigravity permissions; native headless prompts can deny commands. Explicit bypass_permissions: true runs with native approvals bypassed; false selects native policy. Either exact override replaces read/ask access. The installer grants only the bridge MCP server and backs up native settings. Terminal sandboxing is separate and depends on the installed platform. Active mail arrives at the next model invocation or stopping boundary. Idle TUI sessions receive mail on their next turn or through inbox; no public programmatic idle wake API is documented. Native Remote Control provides separate desktop/web UI access through a tunnel. Account quotas are shown by native /usage or /quota; the bridge reports them as unknown because no machine-readable quota command is documented.

Native chats and explicit child conversations are read from Antigravity JSONL logs without modifying them. Updates publish complete immutable runtimes and back up replaced metadata; uninstall archives the owned plugin, including user additions, and retains the native MCP allow rule. No bridge data format changes are required for this additive agent kind.

Gemini CLI (gemini) is separate and is not implemented in this release: it was not installed on the verified PC. See official evidence and CLI differences.