About SiftrCode
We are building the compiler layer between software repositories and autonomous AI coding agents.
The Missing Layer in the Agent Stack
Over the past two years, AI coding agents like Claude Code, Cursor, Windsurf, Devin, and Antigravity transformed how engineers build software. However, as teams began deploying agents on real-world production codebases, they hit a fundamental economic and cognitive wall: token saturation.
Feeding entire monorepos and thousands of source files into LLM context windows causes severe latency spikes, runaway API costs ($100s per day per engineer), and frequent hallucinations due to "lost-in-the-middle" attention dilution.
Compilers figured out decades ago that when linking software modules, you don't need the implementation logic of every dependent file — you only need the header signatures, interface symbols, and type contracts. SiftrCode brings this exact compiler principle to the AI agent era.
100% Local-First
Your intellectual property stays on your machine. All AST transformations execute on local CPU with 0 bytes of network socket transmission.
Sub-150ms Speed
Engineered with our proprietary deterministic synthesis engine to pack 100,000 lines of code into clean interface skeletons in milliseconds.
Open Source Rooted
Distributed under the permissive MIT License for individual engineers worldwide, backed by transparent public audits.
Open Source + Team Infrastructure
We believe standard developer tooling must remain open, auditable, and freely accessible. The SiftrCode CLI (npx siftrcode) is free forever for developers working on open source or individual commercial projects.
For fast-scaling engineering teams and enterprises, we provide SiftrCode Pro: a synchronized context cache that deduplicates AST graphs across engineering seats, enforces architectural boundaries, and runs pull-request context audits in CI/CD.
Get in Touch
We love pair-programming with engineering teams who are pushing coding agents to their limits. Whether you're benchmarking a 2M-token monorepo or building custom MCP agent loops, we're here to help: