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

I tried in my relatively small project.

    ~/c/l/web % ck --sem 'error handling'
    ℹ Semantic search: top 10 results, threshold ≥0.6
    ⠹ Searching with semantic mode...

Cool. Some AI fluff can be detected in the README.

For example under the "Why CK?" section, "For teams" is of no substance compared to "For developers"

I saw this comment a little bit back and I don’t think the OP expanded on it, but this looks like a fantastic idea to me:

sam0x17 20 days ago:

Didn't want to bury the lead, but I've done a bunch of work with this myself. It goes fine as long as you give it both the textual representation and the ability to walk along the AST. You give it the raw source code, and then also give it the ability to ask a language server to move a cursor that walks along the AST, and then every time it makes a change you update the cursor location accordingly. You basically have a cursor in the text and a cursor in the AST and you keep them in sync so the LLM can't mess it up. If I ever have time I'll release something but right now just experimenting locally with it for my rust stuff On the topic of LLMs understanding ASTs, they are also quite good at this. I've done a bunch of applications where you tell an LLM a novel grammar it's never seen before _in the system prompt_ and that plus a few translation examples is usually all it takes for it to learn fairly complex grammars. Combine that with a feedback loop between the LLM and a compiler for the grammar where you don't let it produce invalid sentences and when it does you just feed it back the compiler error, and you get a pretty robust system that can translate user input into valid sentences in an arbitrary grammar.

https://news.ycombinator.com/item?id=44941999

This looks interesting and I look forward to trying it but the title here should really just use the description of the repo, or that be adjusted.

Apart from anything else it appears to be very misleading as Rust (ironically) according to the documentation is not one of the languages supported.

What model are you using to create the embeddings?

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.

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.

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?

What does this have to do with Claude Code?

This looks very useful.

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

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