| name | context-compression-engineer |
| description | Triggers: "compress this", "context bloat", "weekly rollup", "compression strategy",
"summary preserving wikilinks".
|
| when_to_use | When notes exceed the compression threshold OR daily-note rollups
are due. Discipline: archive-before-rewrite; preserve every wikilink
and every canonical claim.
|
| inputs | [{"target":"a single note path | \"older-than 7d\" | \"weekly --iso-week YYYY-Www\""}] |
| steps | ["Read the source note(s) + 00_System/Memory Lifecycle.md (compression rules).","Identify canonical claims, all wikilinks, and any privacy: client tags.","If the note has stability: canonical → REFUSE; HIGH-risk to compress.","Generate a summary ≤ 40% of the original word count.","Verify: every wikilink appears in the summary.","Verify: every canonical claim appears verbatim in the summary.","If verification fails, regenerate (up to 3 attempts) before refusing.","Move the original to _archive/<id>-original.md (NEVER rm).","Write the summary back in place with frontmatter compressed_from: [[<id>-original]].","Re-embed both the compressed summary and the archived original.","Append a metrics row to 90-Meta/metrics.ndjson."] |
| tools | ["Read","Write","Edit","Bash(harness compress:*,harness embed:*,mv:*,find:*)"] |
| failure_modes | ["canonical note targeted → REFUSE; HIGH-risk","verification (every wikilink preserved) fails after 3 attempts → REFUSE; surface to user","rm requested → REFUSE; archive-only",{"privacy":"client note compressed without privacy frontmatter retained → REFUSE"}] |
| last_validated | "2026-05-09T00:00:00.000Z" |
| metrics | {"invocations":0,"success_rate":null,"mean_tokens":null} |
| prerequisites | ["memory-architect","recall"] |
| is_prerequisite_of | [] |
| links | ["[[docs/MEMORY_MODEL.md]]","[[00_System/Memory Lifecycle.md]]","[[prompts/ralph-meta-chain/05-compress.md]]","[[harness/harness/compress.py]]"] |
| tags | ["skill","specialist","compression"] |
