Anyone using Chroma DB with the Langchain Code node?

Questions
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1

Just wondering if anybody has successfully used Chroma instead of something like Pinecone or Supabase … maybe by using the Langchain code node?

2

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
3

Hey @lexgabrees,

I am not aware of anyone doing it but you never know someone may reply who has it working. It may be worth popping in a feature request for Chroma support if that is something you would rather use.

4

Hey @lexgabrees

Check out my tutorial on doing exactly this but for Redis: Using Redis VectorStore Search in n8n

It’s the same steps. you just need to replace the Redis client with the ChromaDB client following the official docs: Chroma | 🦜️🔗 Langchain

Hope this helps!

3 Likes
5

I was using chroma, but I switched over to Zep when they added vector stores. If I remember correctly it was a similar setup. Here’s my code node setup to connect to my zep account:

const Zep = require('@getzep/zep-js');
const ZepClient = Zep.ZepClient;
const client = await ZepClient.init("http://127.0.0.1:8000", "{{key_here}}");

//Example function
const collection = await client.document.addCollection({
  name: {{name}},
  embeddingDimensions: {{embeddingDimensions}},
  isAutoEmbedded: [false/true],
});

return collection;

Hope it helps!

1 Like
6

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