Mragank Shekhar
88 lines
3.3 KiB
Bash
Executable File
88 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Hook: SessionStart (matcher: startup|resume|compact)
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#
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# Bootstraps mem0 context at the start of every session.
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# Output becomes part of Claude's context so it calls mem0 MCP tools.
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#
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# Input: JSON on stdin with session_id, source, transcript_path, model, cwd
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# Output: Text injected into Claude's context (exit 0)
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# Intentionally omit -e so the script always outputs a bootstrap prompt
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# even if jq is missing or stdin is malformed.
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set -uo pipefail
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if [ -n "${MEM0_DEBUG:-}" ]; then
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mkdir -p "$HOME/.mem0" && exec 2>>"$HOME/.mem0/hooks.log"
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fi
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# Skip the bootstrap entirely if no API key is configured -- the agent
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# would otherwise be told to call mem0 MCP tools that will all fail.
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if [ -z "${MEM0_API_KEY:-}" ]; then
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exit 0
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fi
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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# shellcheck source=_identity.sh
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. "$SCRIPT_DIR/_identity.sh"
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INPUT=$(cat)
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SOURCE=$(echo "$INPUT" | jq -r '.source // "startup"' 2>/dev/null || echo "startup")
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# Identity line is emitted before every bootstrap variant so the agent
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# uses the same user_id the hooks resolved. Without this, the agent's
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# search_memories/add_memory MCP calls may bind to a different bucket
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# than what the hooks write to.
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echo "## Mem0 Identity"
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echo ""
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echo "Active user_id: \`$MEM0_RESOLVED_USER_ID\`"
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echo ""
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echo "Always include \`{\"user_id\": \"$MEM0_RESOLVED_USER_ID\"}\` (wrapped in an \`AND\` clause) in every \`search_memories\` filter and as \`user_id\` on every \`add_memory\` call. This keeps the agent's MCP calls aligned with the bucket the hooks write to."
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echo ""
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if [ "$SOURCE" = "startup" ]; then
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cat <<'EOF'
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## Mem0 Session Bootstrap
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You have access to persistent memory via the mem0 MCP tools. Before doing anything else:
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1. Call `search_memories` with a query related to the current project or user request to load relevant context.
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2. Review the returned memories to understand what has been learned in prior sessions.
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3. If appropriate, call `get_memories` to browse all stored memories for this user.
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IMPORTANT: Do NOT skip this step. Always bootstrap context first.
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EOF
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elif [ "$SOURCE" = "resume" ]; then
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cat <<'EOF'
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## Mem0 Session Resumed
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This is a resumed session. Your prior context is already loaded. Before continuing:
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1. Call `search_memories` with a query related to the current task to refresh relevant memories.
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2. If significant time has passed, search for recent project-wide updates.
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Continue where you left off.
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EOF
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elif [ "$SOURCE" = "compact" ]; then
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# Capture the just-generated compact summary in the background.
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# PreCompact fires too early to see this entry; SessionStart-compact
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# is the first place isCompactSummary=true is in the transcript.
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echo "$INPUT" | python3 "$SCRIPT_DIR/capture_compact_summary.py" 2>/dev/null &
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cat <<'EOF'
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## Mem0 Post-Compaction Recovery
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Context was just compacted. The Claude Code-generated compact summary
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is being captured to mem0 in the background as `metadata.type=compact_summary`.
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1. Call `search_memories` to reload context, layering up to three angles:
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- `metadata.type=session_state` -- the rich pre-compaction summary you wrote
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- `metadata.type=compact_summary` -- the platform-generated condensed summary just now
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- `metadata.type=decision` / `anti_pattern` -- specific facts you stored during the session
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2. Continue working from the recovered context.
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EOF
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fi
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exit 0
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