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Reports & Metrics

Gump tracks structured metrics for every run. Use gump report to see them.

Basic report

Detailed step view

Comparing runs

Shows a summary table of your last 5 runs.

What Gump measures

High confidence (100%)

Deterministic and exact: git diff, gate exit codes, wall-clock duration, retries, guard triggers.

Medium confidence (~80%)

Tracked live from the agent stream: tokens (in, out, cache), cost estimates, timestamps, context window usage.

Reconstructed (~50%)

Inferred from heuristics: turn count, turn classification (coding, execution, exploration, planning), shell classification for Codex.

Key metrics

Cost — Per step, per task, per run. Based on published provider pricing. TTFD (Time To First Diff) — Time between agent launch and first file modification. Long TTFD = agent exploring before writing. Useful for prompt optimization. Stall detectiontool_error_count, correction_loops, fatal_loops, repeated_action_loops. These appear in gump report --detail. Context window usage — How much of the agent’s context window was consumed per step.

Analytics model

Each event carries a timestamp and semantic labels. Turns are classified by dominant activity. Steps aggregate turns. Runs aggregate steps.