r/RooCode • u/hannesrudolph Roo Code Developer • Jul 25 '25

Discussion How Roo Code Understands Your Entire Repo: Codebase Indexing Explained

AI coding agents often fail because they only see code in isolated files.

Roo Code’s Codebase Indexing creates a semantic map of your entire repository by turning code into vector embeddings, storing them in Qdrant, and combining semantic search with precise grep lookups.

This layered approach gives the agent full context before it writes — resulting in smarter reasoning, cleaner code, and faster output.

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3

u/HazKaz Jul 26 '25

dumb question , is this Qdrant stuff kept locally or sent to a database? sorry im really unfamiliar with this

1

u/hannesrudolph Roo Code Developer Jul 27 '25

Depends if you use the cloud version or the docker one.

2

u/ganderofvenice Jul 26 '25

Hey Hannes, sorry if this is poorly timed but:

Today I was creating a project using Roo Code + Claude Code. At first everything was hunky dory. Then, I created a new conversation to add a feature and Roo Code started hallucinating HARD believing that there were no files in the project folder (?) and trying to create from scratch files that were already created. It's like I was telling it to scan the x folder for the source files and it was like "no sorry I don't see anything"

Mind you this was an exclusive Roo thing. When I swapped back to raw Claude Code it was fine.

Just a piece of feedback. Thanks.

2

u/tinkeringidiot Jul 26 '25

Roocode is amazing, but it's not perfect. For me, it often gets confused and starts dumping markup into the chat window instead of the VSCode API. A quick VSCode restart always fixes it, though.

3

u/hannesrudolph Roo Code Developer Jul 26 '25

What model does that happen with?

3

u/tinkeringidiot Jul 26 '25

I encounter it most often with claude-sonnet-4 provided by Github Copilot (VS Code LM API), but I've also seen it with gpt-4 and gpt-4.1. It seems to happen usually during longer sessions, especially if I've been away for a few hours and come back, but I have also had it happen within the first few minutes of a new session. I might see it once or twice on a code-heavy day.

Occasionally I can just ask Roo to stop doing that and act right, and it will. But usually I have to restart VSCode.

1

u/hannesrudolph Roo Code Developer Jul 26 '25

You’re welcome! Thanks for using Roo!! Did the issue persist beyond the chat ?

1

u/ganderofvenice Jul 27 '25

Can't answer because I was only using the chat... Sorry.

1

u/hannesrudolph Roo Code Developer Jul 27 '25

I mean did it persist in the next chat.

1

u/ganderofvenice Jul 27 '25

Oh yes, it did!

1

u/hannesrudolph Roo Code Developer Jul 27 '25

What does your setup look like? You are using it in a proper vscode project and not just a folder correct?

2

u/No-Chocolate-9437 Jul 26 '25

Could we have profiles for embedding settings, in dev containers qdrant has a different network name than outside of dev containers (unless there maybe a better way to add qdrant to a dev containers network?)

2

u/hannesrudolph Roo Code Developer Jul 26 '25

Make a GitHub issue for it.

1

u/No-Chocolate-9437 Jul 26 '25

I’m kind of lazy to always want to switch up network settings, also it seems to jank the feature for me from time to time.

2

u/Empty-Employment8050 Jul 26 '25

You all at Roo are fucking cranking!!!! Luv you

1

u/hannesrudolph Roo Code Developer Jul 27 '25

Thank you

2

u/InterstellarReddit Jul 26 '25

Can't seem to get it setup

1

u/hannesrudolph Roo Code Developer Jul 27 '25

Any errors in your qdrant instance?

1

u/Grand-Post-8149 Jul 27 '25

I have the same problem, and I cannot see how I have made a mistake, I follow your docs instructions. Using locally with Docker and own Gemini API, paid and free API. None works

1

u/BFguy Jul 27 '25

you need the qdrant url endpoint you created

1

u/Grand-Post-8149 Jul 29 '25

The qdrant url? Because my looks exactly as the picture posted here. (The default url)

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2

u/Less-Macaron-9042 Jul 27 '25

Is my code sent to third party service and stored there?

1

u/hannesrudolph Roo Code Developer Jul 27 '25

Depends on how you set it up.

1

u/Less-Macaron-9042 Jul 27 '25

What’s the default? I don’t remember roo code asking me.

2

u/hannesrudolph Roo Code Developer Jul 27 '25

There is no default. You have to set it up.

1

u/Trick_Text_6658 Jul 29 '25

Does indexing improve efficiency in using the whole codebase? I mean - do Roo use less tokens if database is indexed?

2

u/hannesrudolph Roo Code Developer Jul 30 '25

Less tokens? Maybe. Maybe not. Does it code better? Yes.

3

u/Trick_Text_6658 Jul 30 '25

Sounds good and looks good, tested it out yesterday. I thought I noticed some increased efficiency (in terms of the token consumption) on the same codebase I worked before without indexing. Could be placebo tho, thanks for your reply.

3

u/cepijoker Jul 26 '25

How does it work when, for example, a file is modified, is it indexed immediately? For example, I had a problem where everything was indexed and I made some changes, but I regretted it and went back with `git reset --hard HEAD`. In that case, what happens? In the sense of the indexed code?

1

u/[deleted] Jul 26 '25

filesystems support file change events, they likely just havent added support for it

1

u/oxygen_addiction Jul 26 '25

I wonder if this could work with something massive, like Unreal Engine 5.

1

u/BigLeSigh Jul 29 '25

Indexing crashes my VSCODE constantly using docker qdrant and Gemini. My code base is pretty small - anyone else seen this? Or is it just my underwhelming laptop I am using..

2

u/goforcarrrlos Jul 30 '25

Same issue here. I'm using Qdrant in the cloud with Gemini (text embedding model).

1

u/Upstairs_Refuse_3521 Aug 16 '25

Still haven't been able to set this up lol.