Every new Copilot session starts blind. Your codebase gets re-sent, re-read, and re-familiarized before a single useful answer comes back — every morning, every developer, fresh bill. Semantic Cache Engine caches that context locally. Warm sessions answer in ~41ms with zero tokens used. When a teammate imports your bundle, they skip straight to warm.
Every new Copilot session starts blind. Same codebase, same files — but the context is gone. Before you can ask anything useful, the model has to re-read and re-familiarize. We watched a small team burn the first several minutes of every session on that overhead alone. Every day. Nobody was measuring it, so nobody was fixing it.
So we measured it — and built something to stop it. Semantic Cache Engine caches the familiarization context locally. Warm sessions answer in ~41ms, the cache gets smarter the longer you use it, and when a teammate imports your bundle, they start day one already warm.
Local-first, no server, no API key. VS Code first — everything else follows.
Install the extension. It indexes your codebase once and builds a local reasoning cache in .reason/. No account. No API key. That's the only cold session.
Before anything reaches the model, the resolver checks for a match — exact, paraphrase, or close-enough context. Most questions already have an answer. Hit: back in under a second, tokens: zero.
When confidence is too low, it routes to the full agent with a compacted context prompt. The answer comes back, a new card is committed. Next time that question comes up, it's a cache hit. The longer you use it, the less it needs to ask.
Export a scrubbed bundle. Teammates import it. They start their first session with weeks of your context already loaded — no cold start, no re-explaining the codebase from scratch.
netstat on two machines during local operations. The extension includes a built-in no-phone-home check you can run yourself..reason/ in your workspace. Bundles only leave when you explicitly export and share them.docker pull ghcr.io/leangridlabs/semantic-cache-engine-demo:latest docker run -it --rm ghcr.io/leangridlabs/semantic-cache-engine-demo
Walks through ingest → cold run → export → import → warm run interactively. No account required.
The free dev tier is in final prep. Leave your email — we'll send one message when it ships, share the baseline measurement methodology, and you can run your own before/after numbers on day one.