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Lacis
Set your AI's context once — it follows every branch
Hi Product Hunt 👋 I'm a solo dev and Lacis is the tool I wished existed.
Every new AI chat forgets who I am and how I work. So I keep re-pasting the
same context — my stack, my rules, my conventions. Lacis fixes that: you set
your context *once*, as a small tree of typed branches (identity, rules,
architecture, skills), and a router auto-injects only the relevant pieces into
every reply — with a banner showing you which ones loaded. It's like a living,
selective CLAUDE.md / .cursorrules, reusable across projects.
Then you branch. The whole conversation is a tree: branch from any message,
and each branch only ever sees its own path — never its siblings. So you can
explore several approaches in parallel without the model mixing them up, and
your context tree rides along on every branch.
It lives in VS Code:
• Uses the models in your existing GitHub Copilot plan — no extra key, no
second bill. Or bring your own OpenAI / Anthropic / OpenAI-compatible key.
• Picks up your MCP tools, and can read/write/edit files with native diff
approval on every change.
• Local by default — no account, no cloud. Share a tree as a read-only link.
▶️ 90-second demo: I build a Mario-style platformer with only AI prompts —
set the context tree, then branch two jump feels and two levels side by side:
https://youtu.be/t2uZLrNtNF4
Free on the VS Code Marketplace (and Open VSX for Cursor / Windsurf / VSCodium).
It's early (v0.0.4) and closed source for now — I'd love your honest take on
whether the context-tree idea clicks.
About Lacis on Product Hunt
“Set your AI's context once — it follows every branch”
Lacis was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #126 on the daily leaderboard. Get the right context linked to the AI prompts.
On the analytics side, Lacis competes within Developer Tools, Artificial Intelligence and GitHub — topics that collectively have 1M followers on Product Hunt. The dashboard above tracks how Lacis performed against the three products that launched closest to it on the same day.
Who hunted Lacis?
Lacis was hunted by GengAd. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Lacis including community comment highlights and product details, visit the product overview.
GengAd