---
title: "Improvement Log"
url: "https://radix.wiki/contents/tech/operations/improvement-log"
version: "2.0.0"
updated: 2026-08-17
last_verified: 2026-08-17
license: CC-BY-4.0
license_url: "https://creativecommons.org/licenses/by/4.0/"
---

# Improvement Log

|  |  |
| --- | --- |
| **System** | DMAIC Improvement Pipeline (retired) |
| **Ran** | 1–5 April 2026 |
| **Retired** | 27 June 2026 |
| **Review Cadence** | Weekly (Sunday 8 PM UTC) |
| **Promotion Threshold** | 2+ weeks with improving target metric |
| **Retirement Threshold** | 2+ weeks with no improvement |
| **Outcome** | No rule ever promoted — the 14-day baseline never completed |

## Overview

**This page is a closed record.** The agent cluster it describes was [retired on 27 June 2026](https://github.com/tutmoses/radix-wiki/commit/895228bf806a5a69ecfdfd82dbe703d46f099482), when the nine cron-driven API routes that ran it — including `/api/metrics`, the daily collector named below — were deleted and the repository's `vercel.json` cron declaration was dropped. Wiki maintenance now runs on demand rather than on a schedule; the current record of that work is the [Wiki Maintenance Log](/contents/tech/operations/wiki-maintenance-log). Everything below is preserved as measured, and stops at the pipeline's last snapshot on 5 April 2026.

This page tracked the continuous-improvement pipeline for the wiki's autonomous agent cluster. A weekly `wiki-retro` task scanned the daily logs for patterns recurring three or more times, opened them as candidate rules, and promoted or retired each one on two weeks of metric evidence. Promoted rules were to be written into the cluster's own instruction file; retired ones were to be listed here with the reason.

The pipeline was still in its 14-day baseline when collection stopped, so no candidate ever reached the two-week threshold and **no rule was ever promoted or retired**. The three candidates below are the whole output of the experiment.

## Active Rules

_Rules promoted from candidates._

- _None. The system was retired during baseline collection, before any candidate was eligible for promotion._

## Candidate Rules

_Patterns detected 3+ times in the week of 1–5 April 2026. All three were still under observation when the cluster was retired; none was ever actioned._

| Pattern | Evidence Dates | Proposed Rule | Target Metric | Status |
| --- | --- | --- | --- | --- |
| Pulse health at 0.0% for 7+ consecutive days | 2026-04-01 through 2026-04-05 (all snapshots) | Investigate pulse record classification – records may be written with incorrect status or pulse agent may not be running. Fix pulse health data pipeline before baseline completes. | system_health_score | NEW – 2026-04-05 |
| Zero tweets sent in 7d with queue depth 4-5 | 2026-04-01 through 2026-04-05 (all snapshots) | Twitter posting pipeline is stalled. Diagnose post-next-tweet.sh or scheduled task execution. Restore 3x daily tweet cadence. | distribution_velocity | NEW – 2026-04-05 |
| Moltbook errors every 24h cycle (2-6 errors/day, increasing) | 2026-04-01 through 2026-04-05 (all snapshots) | Diagnose moltbook agent failure mode. Errors are the sole contributor to agent_error_rate_7d (now 4.2% and rising). Fix or disable moltbook until root cause resolved. | agent_error_rate_7d | NEW – 2026-04-05 |

## Final Retrospective – 2026-04-05 (W14)

### Retrospective Summary

**Baseline status:** Day 8/14 – SPC control limits not yet active. No promotions or retirements possible (no candidates older than 2 weeks).

### Metrics Movement

- **Improved (1):** content_quality_score 0.757 to 0.797 (+5.3%)
- **Degraded (3):** agent_error_rate_7d 3.4% to 4.2% (+24%), system_health_score 0.687 to 0.683 (-0.6%), pages_updated_7d 122 to 7 (-94%)
- **Stable (4):** stale_pages_30d (14), coverage_gaps (0), mend_success (100%), tweets_expired (0)

### Patterns Detected (3 new candidates)

1. **Pulse health persistent zero** – 0.0% across all 7 snapshots. Drags health_score below 0.7.
2. **Tweet pipeline stalled** – 0 tweets sent in 7d despite queue depth of 4-5. Distribution completely offline.
3. **Moltbook error escalation** – 2 to 6 errors/day over the week. Only error source. Pushing error_rate_7d upward.

### Priority Recorded for the Following Week

Fix the tweet posting pipeline – offline 10+ days, largest drag on distribution_velocity. Secondary: investigate pulse_health 0.0%.

_Neither was actioned. This is the last retrospective the pipeline produced; the cluster it measured was removed from the codebase on 27 June 2026._

## Retired Rules

_Candidates that were active 2+ weeks but did not improve their target metric._

- _None — see Active Rules. The pipeline was retired before any candidate aged into a decision._

## Monthly Review

No monthly review was ever produced. The pipeline ran for eight days of a fourteen-day baseline.

## External Links

- [Commit 895228b — "Remove retired agent-cluster routes" (27 June 2026)](https://github.com/tutmoses/radix-wiki/commit/895228bf806a5a69ecfdfd82dbe703d46f099482)
- [radix-wiki source repository](https://github.com/tutmoses/radix-wiki)
- [Wiki Maintenance Log](/contents/tech/operations/wiki-maintenance-log) — the current, on-demand maintenance record
- [Control Chart](/contents/tech/operations/control-chart) — the statistical half of the same retired system