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Findable provides two paths for querying external vector stores:
  1. Vector Retriever data source (type: 'vectorretriever' in dataSources[]) — configure directly on a chat to query a vector store as part of multi-source RAG
  2. Flow Designer tool nodes (integrationType: 'vector_store') — use a vector store as a tool inside a Flow Designer workflow
Both approaches share the same IDataConnection registry for managing credentials and endpoints.

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Supported Providers

All vector stores are first-class DataPlatformType values in IDataConnection (see VECTOR_STORE_TYPES in dataConnectionTypes.ts). Tier 1 — Core: Tier 2 — Enterprise / Cloud: Tier 3 — Specialized:

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Data Connection Fields (Vector Stores)

Vector store connections are managed via the unified IDataConnection interface in the dataconnections Cosmos container. When type is a vector store platform, these additional fields apply: Authentication types vary by provider — see getAuthTypesForPlatform() in dataConnectionTypes.ts.

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Vector Retriever Data Source

To query a vector store directly from a chat’s RAG pipeline, add a vectorretriever entry to the chat’s dataSources[]: The orchestrator queries the vector store in parallel with other data sources and merges results into the RAG context.

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Flow Designer Vector Store Config (IVectorStoreConfig)

For Flow Designer tool nodes with integrationType: 'vector_store', the configuration has three parts: Connection (IVectorStoreConnectionConfig):
  • endpoint, apiKey, index, environment, projectId, region
  • SSL/TLS, connection pool settings
Search (IVectorStoreSearchConfig):
  • topK, minScore, searchType (vector / semantic / hybrid / keyword)
  • similarityMetric (cosine / euclidean / dotProduct / l2)
  • Metadata filters, namespace filters
  • Reranking support (enableReranking, rerankingModel)
  • Query expansion (enableQueryExpansion, expansionPrompt)
  • Hybrid weights (keywordWeight, vectorWeight)
Embedding (optional):
  • modelEndpointId — FK to AI model endpoint for query vectorization
  • embeddingDimensions, batchSize
See Vector Store Quick Reference and Provider Template for detailed setup.