MemoryLake
Engineering & Developermemory diff for agent behavior analysis

Find Why Agent Behavior Changed by Diffing the Memory That Drove It

When agent behavior changes — better or worse — the cause is usually in the memory it retrieves. MemoryLake provides memory diff: compare any two memory states semantically and see exactly what facts, reflections, or skills changed.

Day 1“When agent behavior changes — better or worse — the cause is”“usually in the memory it retrieves.”✓ Got it, I will remember.Day 7 — new session“Same task again — can you keep the context?”× Sure — what was the context again?(forgot every detail you taught it)+ MEMORYLAKE LAYERMemory auto-loadedSemantic diff between two commitsPer-type diff filtersDiff between time windowsSESSION OUTPUT✓ Same prompt, on-brand answerNo re-briefing required.

Find Why Agent Behavior Changed by Diffing the Memory That Drove It

Get Started Free

Free forever · No credit card required

The problem: behavior changes are hard to attribute to memory shifts

Last month the agent was great. This month it's worse on the same kinds of questions. The model didn't change. The prompts didn't change. Something in memory shifted — but DIY memory systems have no way to see what.

How MemoryLake delivers memory diff

Semantic diff between two commits

Semantic diff between two commits

See what facts, reflections, and skills changed.

MEMORYPer-type diff filters

Per-type diff filters

Diff just facts, or just skills, or just reflections.

MEMORYDiff between time windows

Diff between time windows

"What changed in memory between March and April?"

Diff between memory branches

Diff between memory branches

Compare main vs experimental memory.

Get Started Free

Free forever · No credit card required

How it works for memory diff analysis

  1. Connect — Memory commits happen automatically.
  2. Structure — Each commit indexed for fast diff queries.
  3. Reuse — Run diffs between any two commits, branches, or times.

Before vs. after: agent behavior root cause analysis

DIY memoryMemoryLake
See what memory changedManual log reviewSemantic diff
Attribute behavior change to memoryGuessworkDirect evidence
Compare memory branchesCustomBuilt in
Audit memory evolutionLimitedFull provenance

Who this is for

Engineering teams running production agents where behavioral drift over time needs root cause analysis — and current memory infrastructure leaves them blind.

Related use cases

Engineering & DeveloperMemory Time-Travel for Agent DebuggingDebugging agents requires seeing memory at the time of the bug. MemoryLake provides time-travel queries on memory history. Free to get started.
Engineering & DeveloperMemory Replay for Reproducible Agent RunsReproducing agent behavior requires reproducing the memory state. MemoryLake provides memory replay for deterministic agent runs. Free to get started.
Engineering & DeveloperMemory Observability for Production AgentsProduction agents need memory observability. MemoryLake provides metrics, traces, and access logs out of the box. Free to get started.

Frequently asked questions

Diff output format?

Structured JSON plus human-readable view.

Performance on large diffs?

Indexed for fast diffs across large commit ranges.

Self-host?

Yes — enterprise tier deploys in your VPC.

All use casesGet Started Free