Semble
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 and cutting latency on every step. Indexing and searching a full codebase end-to-end takes under a second, with ~200x faster indexing...
Cost / License
- Free
- Open Source (MIT)
Platforms
- Python
- Claude Code
- Cursor
- OpenAI Codex
- OpenCode
Semble
Features
- Command line interface
- Agentic AI
- Python-based
- Code Search
- Zero configuration
Semble information
Developed by
MinishLicensing
Open Source (MIT) and Free product.Written in
Alternatives
0 alternatives listedSupported Languages
- English
AlternativeTo Categories
AI Tools & Services, OS & UtilitiesGitHub repository
- 2,861 Stars
- 106 Forks
- 12 Open Issues
- Updated
What is Semble?
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 and cutting latency on every step. 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.
Run it as an MCP server and any agent (Claude Code, Cursor, Codex, OpenCode, etc.) gets instant access to any repo, cloned and indexed on demand.
Main features:
- Fast: indexes an average repo in ~250 ms and answers queries in ~1.5 ms, all on CPU.
- Accurate: NDCG@10 of 0.854 on our benchmarks, on par with code-specialized transformer models, at a fraction of the size and cost.
- Token-efficient: returns only the relevant chunks, using ~98% fewer tokens than grep+read.
- Zero setup: runs on CPU with no API keys, GPU, or external services required.
- MCP server: works with Claude Code, Cursor, Codex, OpenCode, and any other MCP-compatible agent.
- Local and remote: pass a local path or a git URL.