meter-on

Your objective is to enable CocoMeter token tracking.

Pre-flight Check

Check that .cocoplus/ directory exists. If not, output: "CocoPlus not initialized in this directory. Run $pod init to begin." Then stop.

Check Current State

Check if .cocoplus/meter/current-session.json exists and has "metering_active": true.

If metering is already active, output: "CocoMeter is already active for this session. Use $meter to see current usage." Then stop.

Enable Metering

Create or update .cocoplus/meter/current-session.json:

{
  "session_id": "<sess-YYYYMMDD-HHMMSS>",
  "started_at": "<ISO 8601 timestamp>",
  "metering_active": true,
  "input_tokens": 0,
  "output_tokens": 0,
  "tool_calls": 0,
  "model_breakdown": {},
  "actions": []
}

Ensure .cocoplus/meter/ directory exists (create if not).
Ensure .cocoplus/meter/history.jsonl exists (create empty if not).

Confirm Activation

Output:

CocoMeter enabled.

Token tracking is now active for this session.
- Input and output tokens will be captured per tool call
- Use `$meter` to see current usage
- Use `$meter estimate <action>` to get a pre-flight estimate
- Use `$meter history` to see past sessions

Note: Token counts are estimates based on hook-captured data.
Actual Snowflake Cortex billing may differ.

Anti-Rationalization

Shortcut / Temptation	Why It Fails
Skip checking if metering is already active before enabling	Starting a second session while one is active would reset the current session ID, losing in-progress tracking data
Create session JSON without creating the `meter/` directory first	Writing to a non-existent directory fails silently in some shells; always ensure the directory exists

Exit Criteria

.cocoplus/meter/current-session.json exists with "metering_active": true and a valid session_id in sess-YYYYMMDD-HHMMSS format
.cocoplus/meter/history.jsonl exists (created if absent)
Output confirms metering is enabled with usage commands listed