How do I monitor Google Antigravity sessions?

Install ClawMetry (pip install clawmetry). The daemon auto-detects ~/.gemini/antigravity and its CLI, IDE, and jetski siblings and renders every session, tool call, model, and Gemini token in one dashboard at http://localhost:8900. No SDK.

Does ClawMetry catch background Antigravity generations that keep burning tokens?

Yes. Antigravity's background-generation mode keeps a session running after you close the tab; ClawMetry watches the brain log for continued write activity and flags a session whose token burn continues after the last user interaction. The kill switch (Pro) stops the generation before the next call.

Does ClawMetry track Gemini thinking-token cost?

Yes. Gemini's thinking-mode bills thinking tokens on top of output; ClawMetry parses the per-generation usage block and prices thinking, output, and prompt tokens separately on the Cost tab so you see the real bill, not the model's stated output cost.

Does ClawMetry work with all four Antigravity surfaces (CLI, IDE, brain, jetski)?

Yes. All four write brain JSONL to sibling directories under ~/.gemini; ClawMetry auto-detects each and labels sessions by surface so you can filter (for example, show me only the IDE sessions this week).

How much does ClawMetry cost for Antigravity?

Free forever on your own machine. ClawMetry Cloud starts at $9 per node per month (Starter) or $19 per node per month (Pro, which adds policy gates, evals, and background-generation kill switches). Antigravity is one of 17 paid runtimes on the Cloud tier.

Observability and cost tracking for Google Antigravity

See every Antigravity brain JSONL entry, tool call, and Gemini token as it happens. ClawMetry reads the brain logs Antigravity writes to ~/.gemini/antigravity and its siblings, and renders sessions, tokens, cost, and background-generation burn in one dashboard.

Supported runtime Reads Brain JSONL files, one per session, plus a per-generation token log Read-only Free trial

What ClawMetry sees on Antigravity

ClawMetry's Antigravity adapter opens the store Antigravity already writes (~/.gemini/antigravity, ~/.gemini/antigravity-cli, ~/.gemini/antigravity-ide, ~/.gemini/jetski (overrideable via CLAWMETRY_ANTIGRAVITY_HOME)) in read-only mode and surfaces:

Sessions: started at, last activity, model, message count, per-session token totals.
Live activity: every tool call as it lands, with args and result. Turn-level tokens split.
Per-turn tokens: Gemini-shaped per-generation token split (prompt tokens, candidates tokens, cached content tokens, thinking tokens) plus derived cost.
Cost per session, per model, per hour: cache-aware where the model supports caching. Compare Antigravity spend against the other 18 runtimes ClawMetry observes.
Background generations that keep burning tokens after you close the tab: the Antigravity-specific signal ClawMetry surfaces that generic dashboards do not.
Approval + kill switch: watch for token-maxing signals (message repeat, no-progress heuristic, cost-per-hour threshold), pause or kill the session before the next call.

Source: the adapter is at clawmetry_pro/adapters/antigravity.py. Every parse rule and every SQL SELECT is in that file.

Enable it in about two minutes

1. Install ClawMetry

Pick the line that matches your OS. Windows users: paste the install.cmd line, not the shell one.

# macOS or Linux
curl -fsSL https://clawmetry.com/install.sh | bash

# Windows (cmd.exe or PowerShell)
curl -fsSL https://clawmetry.com/install.cmd -o install.cmd && install.cmd

2. Run the daemon

clawmetry

The daemon auto-detects Antigravity's local store and starts reading immediately. No env var, no config, no runtime restart.

3. Open the dashboard

Open http://localhost:8900. Switch the runtime chip to Antigravity.

Start the free trial →

The one thing this catches that Antigravity alone does not

Left alone, Antigravity's failure mode is a background generation left running overnight that quietly bills you for 10 hours of Gemini Pro reasoning. ClawMetry watches for it: cost per hour on the Antigravity runtime, message-repeat detection, and per-session token-growth curves. Set a threshold, and the approval queue pauses before the next call. Kill switch (Pro) stops it.

All 19 runtimes ClawMetry observes

Antigravity is one of 19. Free on every plan: OpenClaw, NVIDIA NemoClaw. Paid on Cloud Pro or Self-Hosted Pro: the rest.

OpenClaw NVIDIA NemoClaw NanoClaw PicoClaw Claude Code Codex Cursor Aider Goose opencode Qwen Code Hermes Pi Deep Agents n8n Antigravity (this page) GitHub Copilot Grok QM