Reduce AI coding context by up to 46%
while preserving code understanding.

How LeanContext Works

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1. Select Code

Paste code or choose a repository

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2. Remove Noise

Comments, docs, whitespace, dead code

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3. Send More Signal

Same logic. Fewer tokens.

Use LeanContext wherever you work.

LeanContext VS Code Preview

LeanContext for VS Code

Built directly into GitHub Copilot.

โ˜…โ˜…โ˜…โ˜…โ˜… Published on VS Code Marketplace
  • โœ“ @lc participant
  • โœ“ Workspace optimization
  • โœ“ Folder optimization
  • โœ“ Audit viewer
  • โœ“ Fully local processing
  • โœ“ No API calls
Install Extension
46%
Max Reduction
10-46%
Average Range
5
Repositories Tested
100%
Accuracy Retained

Install in under 30 seconds

  1. Open VS Code
  2. Install LeanContext
  3. Open Copilot Chat
  4. Type @lc
Install from VS Code Marketplace

Interactive Playground

Test LeanContext live in your browser.

Source Input
1 Paste code 2 Check rules 3 See savings
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AST Translation Rule

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โ€” Savings Rate
โ€” Tokens Saved
Original Statement
CGE Compacted Shorthand

Decompression Feedback Loop

Paste the LLM's reconstructed code below. The Diff Engine will extract structural identifiers and verify against the source AST.

Awaiting Input...
โ€” compression
Context window reduction factor
Token Allocation
Original
LeanContext
Original โ€”
LeanContext Output โ€”
Tokens saved โ€”
Characters freed โ€”
Cost reduction โ€”
Paste code to analyze
Projected Savings beta
Agent Queries Per Day
Team Size (Developers)
Target LLM Model
โ€” tokens saved / month
โ€” est. monthly savings
*Monthly calculation: Tokens Saved ร— Agent Queries ร— Team Size ร— 30 Days ร— $5.00 per 1M Input Tokens (GPT-5.5)