Show HN: Semantic grep for Claude Code (RUST) (local embeddings)

https://github.com/BeaconBay/ck

42•Runonthespot•3h ago

Comments

dprophecyguy•2h ago

this is so cool, is there any other tool which is more mature?

redhale•2h ago

I recently saw SemTools [0], but have not tried it out yet myself.

[0] https://github.com/run-llama/semtools

fakebizprez•1h ago

LlamaIndex is batting a thousand since their inception. Can't go wrong with this tool, either.

Runonthespot•1h ago

Agreed - Logan is a legend, this is similar but simpler - no dependency on external models (might add it)

fakebizprez•1h ago

We really are living in the golden age of the terminal. I thought this would take a chunk out of Typescript/node marketshare of young coders, but i'm starting to see more and more of these animals building TUIs using nothing but npm packages.

Have they no shame?

floydnoel•1h ago

Last week I built my own CLI coding agent tool using just nodejs and zero dependencies! It is a lot of fun to build, really, I think everyone should try it out

Runonthespot•1h ago

help make it mature :D Add any issues

ayhanfuat•1h ago

Isn't Claude Code's selling point that it doesn't use embeddings?

joshuanapoli•1h ago

I don’t think that “Claude Code” is relevant to this semantic grep tool.

Runonthespot•1h ago

bear in mind that Claude Code by default uses grep - if you watch you'll see if it's looking for something it doesn't know the name of, it flails around with different patterns. Try this tool, tell CC to take a look using ck --help and take it for a spin.

CC in my case likes it so much, it started using it to debug the repo rather than grep and suggesting its own additions

Runonthespot•1h ago

Note that it’s grep AND semantic - so Claude can start with a grep strategy and if it finds nothing can switch to semantic, and since it’s local and fast, it keeps in sync easily enough

brookst•1h ago

How do you tell CC to use it? Just as an entry in Claude.md?

Runonthespot•50m ago

To start with just tell it- but yes Claude.md works too.

“We have a new grep semantic hybrid tool installed called ck - check it out using ck --help and take it for a spin”

Alifatisk•1h ago

At this point, we aren't even saying it's written in Rust anymore, we just mention it in the title whenever possible.

I did look into the core features and I gotta say, that looked quite cool. It's like Google search, but for the codebase. What does it take to support other languages?

Runonthespot•25m ago

It supports most languages but needs a bit of tree-sitter setup to do semantic chunking. Let me know what languages you’d like added

benzible•8m ago

I'd love to see elixir support.

skybrian•48m ago

This looks very useful.

Looks like you have to build an index. When should it be rebuilt? Any support for automatic rebuilds?

Runonthespot•18m ago

Yes- files are hashed and checked whenever you search so index should always remain up to date. Only changed files are reindexed. You can also inspect the metadata (chunking semantics, embeddings). It’s all in the .ck sidecar

ozten•33m ago

This generalizes to a whole new category of tools: UX which requires more thought and skill, but is way more powerful. Human devs are mostly too lazy to use, but LLMs will put in the work to use them.

0x696C6961•20m ago

This is cool, but I don't understand why it tries to re-implement (a subset of) grep. Not only that, but the grep-like behaviour is the default and I need to opt-in to the semantic search using the --sem flag. If I want grep I can use grep/ripgrep.

Runonthespot•8m ago

Fair comment- the initial thinking was to have both and in fact a hybrid mode too which fuses results so you can get chunks that match both semantically and on keyword search in one resultset. Later could add a reranker too.

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Show HN: Semantic grep for Claude Code (RUST) (local embeddings)

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