[copilot-session-insights] Daily Copilot Agent Session Analysis — 2026-09-26

[github-actions[bot]]

🤖 Copilot Agent Session Analysis — 2026-09-26

Executive Summary

• Sessions Analyzed: 50 (all workflow runs across 8 branches — this is CI-gate re-fires and comment-bot follow-ups, not 50 distinct human tasks)
• Analysis Period: 2026-09-25 22:02 UTC → 2026-09-26 06:16 UTC (~8.2h window)
• Completion Rate: 36.0% (18/50), +16.0pts vs 09-25 (20.0%), slightly above the 33-day mean of 31.5% (range 4–78%)
• Experimental Strategy: none this run (roll=74, standard analysis)

📈 Session Trends Analysis

Completion Patterns

Completion rate rebounded 16pts off 09-25's dip to 36.0%, close to the 33-day mean (34.3% shown / 31.5% computed over the full 33-day history). The series shows no sustained trend — large day-to-day swings around a stable long-run average, driven mostly by which gate-heavy branches happen to be active on a given day rather than a change in agent behavior.

Duration & Efficiency

Average duration returned to near-zero (3.06 min) after 09-23/09-24's cascade-inflated readings; the three visible spikes (09-16, 09-20, 09-23) are GitHub status-resync artifacts, not genuine slowdowns — a recurring measurement quirk in this metric, not an efficiency signal.

Key Metrics

Metric	Value	Trend
Total Sessions	50	→
Successful Completions	18 (36.0%)	↑ vs 09-25 (20.0%)
Action Required / Cancelled	32 (64.0%)	↓
Average Duration (raw)	3.06 min	↑ vs 09-25 (1.44 min)
Average Duration (excl. 1 resync outlier)	3.06 min	—
True-Agentic Success Rate	87.5% (7/8)	↓ vs 5-day 100% streak
Bot-Driven Share of Successes	61.1% (11/18)	↓ below 72–86% band
Orphaned Branches	0	→ NORMAL

Success Factors ✅

1. Comment-addressing runs stay reliable: All 8 "Addressing comment on PR #NNNN" runs but one completed successfully (87.5%); the one exception was cancelled by its own PR merging mid-run, not a task failure.

   • Success rate: 87.5% (7/8)
   • Example: PR Preserve durable provenance for superseded PR reviews #63496 and Prevent cache-memory validation marker EACCES failures #63498 each had 2 successful "Addressing comment" runs feeding directly into passing Code scanning re-checks.

2. Code scanning re-checks are still the most reliable workflow: 10/10 (100%) success across PRs Support dynamic checkout sets from GitHub Actions expressions #63241, Tell engines without MCP that the safeoutputs CLI is the only transport #63493, Preserve durable provenance for superseded PR reviews #63496, Prevent cache-memory validation marker EACCES failures #63498, Pin pull_request activation checkout to base SHA #63499.

   • Success rate: 100%
   • Example: Every push to an open PR triggered a passing "Code scanning AI findings" run within seconds.

3. Small, single-purpose branches converge fast: copilot/fix-safe-outputs-prompt (4 sessions, 75.0% success) and copilot/fix-role-gate-issues/copilot/fix-aw-gateway-model-context-window (1 session each) all merged within the 8-hour window — low gate noise correlates with fast merge.

Failure Signals ⚠️

1. Perpetually-blocked CI gates, unchanged for 30+ days: CJS 0/7, CWI 0/3, Doc Build - Deploy 0/1, Squad 0/5, Agentic Commands 0/5, Squad Implement Worker 0/4 — all 0% success (25/25 combined). CGO posted a single pass (1/7, 14.3%).

   • Failure rate: 100% for 6 of 7 gate workflow types
   • Example: Every Squad/Agentic Commands firing today ended action_required regardless of branch.

2. Bot-driven provenance dipped below the historical band again: only 61.1% of today's successes (11/18) were bot-driven (Code scanning + 1 CGO pass) vs the 72–86% historical range — the second-lowest reading of the last 30+ days after 09-23's 58.3% (which was called a "one-off" at the time). Two low readings in 4 days suggests this may be a recurring pattern rather than noise.

   • Failure rate (bot-driven share, inverted framing): 38.9% true-agentic share, ~2x the historical norm

3. Merge-invalidation multiplicity — new daily record: 4 independent PR merges each cancelled or flipped an in-flight workflow within 6–39s of merging (see Notable Observations below), beating the prior record of 2/day (09-14).

Prompt Quality Analysis 📝

Per-Prompt Breakdown

No prompt text is available this run — sessions-list.json only exposes workflow name, branch, timestamps, and conclusion; it does not carry the underlying task/comment text, and conversation transcripts (which would carry it) are empty (see Notable Observations). Prompt-quality analysis is not possible from current data and is omitted rather than fabricated.

Orphaned Branch Escalation Alerts 🚨

Branches with ≥5 simultaneous gate firings and no Copilot agent assigned for >2 hours.

Summary

• Orphaned Branches Today: 0 out of 18 open PRs (0.0%)
• Historical Baseline: 0.0% orphaned rate (33-day mean over 33 recorded days)
• Status: NORMAL

Escalation Candidate Details

Escalation Candidates

✅ No orphaned branches exceed the escalation threshold today. All 4 active copilot/* branches (fix-cache-memory-validation-failure, preserve-review-provenance-marker, fix-activation-job-checkout-issue, dynamic-checkouts-github-action) are assigned to Copilot + pelikhan with gh-aw-bot as reviewer.

CI Waste Estimate

• Orphaned gate-hours today: 0 — no escalation candidates, no CI waste attributable to orphaning.

Notable Observations

Loop Detection and Session Diagnostics

Loop Detection

• Not measurable this run — conversation transcripts ({run_id}-conversation.txt) are empty for the 34th+ consecutive recorded day (0 files in logs/), so turn-by-turn loop/retry detection remains unavailable. This is now the single largest standing tooling gap, unchanged since first flagged in the 09-13 analysis.

Tool Usage

• Not measurable this run (same conversation-log gap as above).

Context Issues

• Not measurable this run (same conversation-log gap as above).

Merge-invalidation cascade multiplicity (new daily record)

Four separate PR merges each disturbed an in-flight workflow within seconds, more than double the prior record of 2/day (09-14):

• PR Enforce firewall compatibility for Copilot and web tools #63474 (mark-agentic-engine-errors) merged 05:39:46Z → its own "Addressing comment on PR Enforce firewall compatibility for Copilot and web tools #63474" run cancelled ~39s later (05:40:25Z updated_at).
• PR Authorize allowlisted GitHub App actors on repository_dispatch #63492 (fix-role-gate-issues) merged 05:16:26Z → Squad Implement Worker fired action_required 7s later (05:16:33Z).
• PR Set Pi gateway context window for Copilot Claude Sonnet 5 #63494 (fix-aw-gateway-model-context-window) merged 05:22:49Z → Squad Implement Worker fired action_required 6s later (05:22:55Z).
• PR Tell engines without MCP that the safeoutputs CLI is the only transport #63493 (fix-safe-outputs-prompt) merged 05:23:33Z → Squad Implement Worker fired action_required 7s later (05:23:40Z).

The 6–7s "Squad Implement Worker fires action_required right after merge" signature was previously seen as a single rare "smallest instance" event on 09-19 and 09-24; today it recurred identically 3 times in one 8-minute window, suggesting it is a routine per-merge side effect (any branch with an active Squad Implement Worker gate at merge time gets one post-merge action_required firing) rather than an edge case.

Burst clustering

• 18 firing bursts (≤10s inter-arrival gap), sizes up to 10. Isolated sessions: 55.6% success (5/9); burst-fired sessions: 31.7% success (13/41) — a 1.75x gap, narrower than the historical 3–8x range but consistent in direction with every prior recorded day.

Branch concentration

copilot/fix-cache-memory-validation-failure led with 15/50 (30.0%, 33.3% success), followed by copilot/preserve-review-provenance-marker 14/50 (28.0%, 35.7% success). Yesterday's record-setting branch copilot/dynamic-checkouts-github-action (88% concentration on 09-25) dropped to 6/50 (12.0%) today as its PR #63241 stabilized — no new concentration record.

Duration

Raw mean 3.06 min / median 0.0 min (18 nonzero entries: mean 8.32 min / median 4.58 min). One CGO success on fix-safe-outputs-prompt showed a 437.7-minute (7.3h) gap between created_at and updated_at — a GitHub status-resync artifact matching the same pattern seen on 09-16, 09-18, 09-20, and 09-23, not genuine execution time; excluded from headline duration stats.

Experimental Analysis

Standard analysis only this run — no experimental strategy (roll=74, threshold <30 required for experimental mode).

Actionable Recommendations

For Users Writing Task Descriptions

1. N/A this cycle: No prompt/task text is available in the metadata this workflow currently fetches, so prompt-quality-specific recommendations can't be derived. See System Improvements rejig docs #1 below for the fix.

For System Improvements

1. Capture conversation transcripts: 34+ consecutive days with zero conversation logs is the largest standing gap in this analysis. Without transcript capture, true behavioral analysis (tool usage, loop detection, prompt-quality correlation, error recovery) is impossible — every daily report has been metadata-only since 09-13. Recommend prioritizing the transcript-fetch path in the copilot-session-data-fetch module.

   • Potential impact: High

2. Investigate the recurring low bot-driven-provenance readings: 09-23 (58.3%) and today (61.1%) are the two lowest bot-driven shares in 30+ days, both below the 72–86% historical band. Two occurrences in 4 days warrants checking whether Code scanning / gate-bot dispatch has slowed or whether true-agentic (comment-addressing) volume has genuinely risen.

   • Potential impact: Medium

3. Consider a post-merge grace window for Squad Implement Worker: the observed 6–7s "merge → action_required" firing recurred 3x today and in isolated form on 09-19/09-24. If this gate is expected to fire post-merge as a matter of course, it's adding noise to completion-rate metrics without signaling anything actionable; if it's unintended, it's a small but real CI-cost leak on every merge.

   • Potential impact: Low-Medium

For Tool Development

1. No missing tools identified this run — the gh api + jq pipeline used for orphan detection and cascade tracing worked as designed; the gap is data availability (transcripts), not tooling.

Historical Trends and Statistical Summary

Trends Over Time

• Completion rate trend: Volatile, no sustained direction — 09-22 40% → 09-23 24% → 09-24 44% → 09-25 20% → 09-26 36%. Today's 36% sits close to the 33-day mean (31.5%), continuing the pattern of large day-to-day swings around a stable long-run average.
• Average duration trend: Reverted to near-zero (3.06 min raw) after 09-23/09-24's cascade-inflated readings; consistent with a session mix dominated by fast CI-gate re-fires.
• True-agentic streak: Broken today (87.5% vs 5 consecutive days of 100%, 09-22 through 09-25) — but the break was a merge-triggered cancellation, not a genuine task failure, so this should not be read as a quality regression.

Statistical Summary

Total Sessions Analyzed:     50
Successful Completions:      18 (36.0%)
Action Required:             31 (62.0%)
Cancelled:                    1 (2.0%)
Failed:                       0 (0.0%)

Average Session Duration:    3.06 min (raw), 8.32 min (18 nonzero entries)
Median Session Duration:     0.0 min (raw), 4.58 min (nonzero entries)
Longest Session (genuine):   27.13 min (Addressing comment on PR #63499)
Longest Session (raw incl. resync artifact): 437.73 min (CGO, flagged as artifact)

Loop Detection:              not measurable (no conversation logs)
Context Issues:              not measurable (no conversation logs)
Tool Failures:                not measurable (no conversation logs)

High/Medium/Low-Quality Prompts:  not measurable (no prompt text in metadata)

Next Steps

• Review recommendations with team
• Prioritize conversation-transcript capture to unblock true behavioral analysis (34+ day gap)
• Monitor whether the low bot-driven-provenance reading recurs a 3rd time in the next few cycles
• Schedule follow-up analysis tomorrow (standard daily cadence)

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Analysis generated automatically on 2026-09-26
Run ID: 36225020534
Workflow: Copilot Session Insights

Generated by 📊 Copilot Session Insights · claude · agent · 233.4 AIC · ⌖ 9.92 AIC · ⊞ 18.6K · ◷

• expires on Sep 26, 2026, 11:19 PM UTC-08:00

[github-actions[bot]]

This discussion has been marked as outdated by Copilot Session Insights.

A newer discussion is available at Discussion #63802.