Mgeeeek
ed15fc1386
Hooks previously fell back to $USER when MEM0_USER_ID wasn't set,
producing a different user_id on every machine for the same person.
Result: a single account with memories scattered across many user
buckets, none of which can see each other.
Resolution priority (same in bash and python):
1. MEM0_USER_ID env var (explicit override)
2. ~/.mem0/identity.json cache (pinned to MEM0_API_KEY fingerprint)
3. Derived: "mem0-" + sha256(MEM0_API_KEY)[:12]
4. Fallback: $USER, else "default"
Same MEM0_API_KEY across machines now yields the same user_id without
the user having to set MEM0_USER_ID by hand on every laptop.
Resolver shipped as two tiny files instead of a shared module:
_identity.sh -- sourced by bash hooks, exports MEM0_RESOLVED_USER_ID
_identity.py -- imported by on_pre_compact.py, exposes resolve_user_id()
Hook integration:
on_user_prompt.sh -- sources resolver, USER_ID interpolated into rubric
on_session_start.sh -- emits an "Active user_id: <X>" header before the
bootstrap text, so the agent's MCP search_memories/add_memory calls
use the same bucket the hooks write to (closes the agent-side half
of the symptom)
on_pre_compact.py -- replaces inline env lookup with resolve_user_id()
Existing memories under previous $USER values are not auto-migrated.
The cache file regenerates on key rotation (fingerprint mismatch).
58 lines
1.6 KiB
Bash
58 lines
1.6 KiB
Bash
# Source this file. Sets MEM0_RESOLVED_USER_ID.
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#
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# Resolution priority:
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# 1. MEM0_USER_ID env var (explicit override)
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# 2. ~/.mem0/identity.json cache (pinned to current MEM0_API_KEY fingerprint)
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# 3. Derived: "mem0-" + sha256(MEM0_API_KEY)[:12]
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# 4. Fallback: $USER, else "default"
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#
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# Same MEM0_API_KEY across machines yields the same user_id, which fixes
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# the "47 user buckets per account" symptom from running on multiple
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# laptops with different $USER values.
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_mem0_sha256() {
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if command -v sha256sum >/dev/null 2>&1; then
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sha256sum | cut -d' ' -f1
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else
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shasum -a 256 | cut -d' ' -f1
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fi
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}
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_mem0_resolve_identity() {
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if [ -n "${MEM0_USER_ID:-}" ]; then
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printf '%s' "$MEM0_USER_ID"
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return
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fi
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local api_key="${MEM0_API_KEY:-}"
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local cache="$HOME/.mem0/identity.json"
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if [ -n "$api_key" ]; then
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local digest
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digest=$(printf '%s' "$api_key" | _mem0_sha256)
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local fp="${digest:0:8}"
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if [ -f "$cache" ]; then
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local cached_fp cached_id
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cached_fp=$(jq -r '.api_key_fingerprint // ""' "$cache" 2>/dev/null)
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cached_id=$(jq -r '.user_id // ""' "$cache" 2>/dev/null)
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if [ "$cached_fp" = "$fp" ] && [ -n "$cached_id" ]; then
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printf '%s' "$cached_id"
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return
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fi
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fi
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local derived="mem0-${digest:0:12}"
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mkdir -p "$HOME/.mem0" 2>/dev/null && \
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printf '{"user_id":"%s","source":"api_key","api_key_fingerprint":"%s","resolved_at":"%s"}\n' \
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"$derived" "$fp" "$(date -u +%FT%TZ)" > "$cache" 2>/dev/null
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printf '%s' "$derived"
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return
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fi
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printf '%s' "${USER:-default}"
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}
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MEM0_RESOLVED_USER_ID="$(_mem0_resolve_identity)"
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export MEM0_RESOLVED_USER_ID
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