Your agents already solved this. deja finds it.

vshulcz.github.io/deja-vu

Claude Code, Codex and opencode write every conversation to local files — gigabytes of debugged problems and design decisions you can't search. deja is a zero-dependency binary that turns those histories into a memory layer:

Search deja "connection pool exhausted" — 7–9 ms over gigabytes, retroactive: months of logs from before you installed it

Agent recall MCP recall tool — the agent answers "we fixed this three weeks ago" instead of re-debugging, across harnesses

Auto-recall install --auto adds a SessionStart hook: relevant memory lands in context before you ask

Redaction API keys, JWTs, private keys are stripped at index time — the cache is safe to keep

Stats deja stats — your agent work, wrapped: harnesses, top projects, activity sparkline

Share deja share <id> — hand a colleague a sanitized digest of a session, secrets already scrubbed

Sync deja sync export/import — move memory between machines, append-only,…