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Renn F
cc4ccb7ea3
The token-usage pipeline was fully built — per-session SDK counters,
/usage/status, the orchestrator finalize-fetch that writes token columns and
estimated cost to the spawn-session row, the daily rollup, and the dashboard
— but nothing ever populated the counters. /usage/report had zero callers, so
every session reported zero tokens and the cost dashboard rendered all-zeros.
A redeploy could not fix code that was never written.
Close the loop with the producer that was missing. Claude Code does not pass
token counts to hooks, but it does pass the session transcript path, and each
assistant entry records its API call's usage. Add:
- POST /usage/sync, which parses the transcript and *sets* the cumulative
totals absolutely (idempotent — re-syncing the same or a grown transcript
overwrites, never double-counts), with a (size, mtime) short-circuit so an
unchanged transcript skips the re-parse.
- usage-report-hook.sh, which hands the SDK the transcript path. Registered on
PostToolUse (keeps mid-run snapshots and reaped-agent sessions accurate) and
Stop (guarantees a final sync at turn end before finalize reads the totals).
Field mapping verified against a real Claude Code transcript:
message.usage.{input_tokens, output_tokens, cache_read_input_tokens,
cache_creation_input_tokens}. Unit tests cover summation, idempotency, growth,
a missing transcript, and malformed lines.