semble

About

Fast and Accurate Code Search for Agents Uses 98% fewer tokens than grep+read

Semble is a code search library built for agents. It returns the exact code snippets they need instantly, using 98% fewer tokens than grep+read. Indexing and searching a full codebase end-to-end takes under a second, with 200x faster indexing and 10x faster queries than a code-specialized transformer, at 99% of its retrieval quality (see benchmarks). Everything runs on CPU with no API keys, GPU, or external services. Use it as an MCP server, a CLI tool via AGENTS.md, or a dedicated sub-agent, and any coding agent (Claude Code, Cursor, Codex, OpenCode, etc.) gets instant access to any repo.

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