Kartik
65 lines
2.4 KiB
Bash
Executable File
65 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Hook: PreCompact
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#
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# Fires BEFORE context compaction. This is the last chance to capture
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# the full context before it gets compressed.
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#
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# Output: Text instructions injected into Claude's context.
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# Claude still has the full conversation and can write an accurate summary,
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# which it stores via add_memory(infer=False) so the platform preserves
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# the structure verbatim instead of running a second extraction pass.
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set -euo pipefail
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if [ -n "${MEM0_DEBUG:-}" ]; then
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mkdir -p "$HOME/.mem0" && exec 2>>"$HOME/.mem0/hooks.log"
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fi
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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INPUT=$(cat)
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python3 "$SCRIPT_DIR/telemetry.py" pre_compact 2>/dev/null &
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cat <<'EOF'
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## Pre-Compaction: Extract and store durable facts
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Context compaction is about to happen. Review the conversation and store only facts that would help a future agent with ZERO context.
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### What to store
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For each fact, ask: "Would a new agent — with no prior context — benefit from knowing this?" If no, skip it. Most sessions produce 0-3 facts worth storing.
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Store each fact as a SEPARATE `add_memory` call. One fact per call. 15-50 words each. Third person. Include file paths when relevant.
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Categories and when to use them:
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- `decision` — architectural choices, trade-offs made ("Chose PostgreSQL over MongoDB for auth because of ACID requirements")
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- `task_learning` — patterns that worked ("Running migrations before seed in this repo avoids FK violations")
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- `anti_pattern` — approaches that failed ("Don't use batch insert for users table — triggers deadlock with audit log")
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- `convention` — coding standards discovered ("This repo uses snake_case for all Python files, camelCase for TS")
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- `user_preference` — how the user likes to work ("User prefers short PRs, one feature per branch")
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### What NOT to store
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- Session summaries or "what we did today" blobs
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- Raw file lists or command histories
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- Anything already stored in a prior `add_memory` this session
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- One-time information that won't recur
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- Transient state ("currently debugging X")
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### How to store
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```
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add_memory(
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messages=[{"role":"user","content":"<one fact, 15-50 words>"}],
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user_id="<active user_id>",
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app_id="<active project_id>",
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metadata={"type":"<category>","branch":"<active branch>","confidence":0.8},
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infer=False,
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)
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```
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If nothing durable happened this session, store nothing. That is correct.
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EOF
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exit 0
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