Semble
Fast code search for agents that uses far fewer tokens than grep and file reads.
Updated
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Use cases
About Semble
Semble is listed in our coding category and is aimed at builders. Fast code search for agents that uses far fewer tokens than grep and file reads. Pricing, as the maker states it: Open source. Maturity: Mature. We last checked the official link on 2026-10-16.
What is Semble?
Semble is a code search library built for agents. It returns the exact code snippets an agent needs, and its README says it uses about 99% fewer tokens than grep plus file reads, with indexing and search of a full codebase taking under a second for most repos.
Everything runs on CPU with no API keys, GPU or external services. You can use it as an MCP server, as a CLI tool referenced from AGENTS.md, or as a dedicated sub-agent, so coding agents such as Claude Code, Cursor, Codex and OpenCode can query any repo in natural language.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: minish.ai/packages/semble/introduction.
Who is Semble for?
Developers who want their coding agents to find code faster and spend fewer tokens on search.
Semble at a glance
- Open source: Yes (MIT License)
- GitHub: MinishLab/semble · 6,256 stars (as of Oct 21, 2026)
Key features
- Natural-language code search for agents
- CPU-only, no API keys or services
- MCP server, CLI or sub-agent
- Works with Claude Code, Cursor, Codex and OpenCode
Semble FAQ
What is Semble?
Semble is a code search library built for agents. It returns the exact code snippets an agent needs, and its README says it uses about 99% fewer tokens than grep plus file reads, with indexing and search of a full codebase taking under a second for most repos.
Who is Semble for?
Developers who want their coding agents to find code faster and spend fewer tokens on search.
Is Semble free?
Semble's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Semble open source?
Yes. Semble is released under the MIT License, according to its GitHub repository.
What are alternatives to Semble?
Similar tools include Command Code, abtop, code-review-graph, Zed, 21st Magic MCP and Tov.
Semble ratings and reviews
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21st Magic MCP
MCP server from 21st.dev that lets Cursor, Claude Code and Windsurf search and generate React and Tailwind UI components inside the editor.
Tov
Tov is an experimental programming language designed to be written by coding agents. It uses TypeScript syntax minus a few traps (no any, null or loose equality, separate int and float types, and failing calls marked with try), so agents already know how to write it, and its compiler returns machine-readable fixes the agent can apply after every edit. Programs compile to small, fast native binaries, with published benchmarks against Rust, Bun and Node. Agents can learn it from the site's llms.txt.
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