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ToolRetriever

oxios_kernel::tools::retrieval

Struct ToolRetriever 

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pub struct ToolRetriever { /* private fields */ }
Expand description

Semantic search engine for OS capabilities.

Maintains an in-memory vector index of all registered tools and supports top-K retrieval via cosine similarity against a query embedding.

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impl ToolRetriever

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pub fn new(embedder: Arc<dyn EmbeddingProvider>) -> Self

Create a new, empty retriever backed by the given embedder.

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pub fn embedder(&self) -> &Arc<dyn EmbeddingProvider> ⓘ

Return a reference to the underlying embedder.

Useful when the caller needs to compute a query embedding before calling retrieve.

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pub async fn index_tool(&mut self, entry: ToolEntry)

Add a tool to the index.

The tool’s description is embedded immediately using the configured provider. If the embedding fails the tool is silently skipped (logged at warn level in future telemetry).

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pub fn retrieve( &self, query_embedding: &EmbeddingVector, top_k: usize, ) -> Vec<ScoredTool>

Retrieve the top-K tools most relevant to the given query embedding.

The query_embedding is compared against every indexed tool using EmbeddingVector::cosine_similarity. Results are sorted by score descending.

If top_k exceeds the number of indexed tools, all tools are returned.

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pub fn len(&self) -> usize

Number of indexed tools.

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pub fn is_empty(&self) -> bool

Returns true if no tools have been indexed.

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pub fn entries(&self) -> Vec<&ToolEntry>

Get all indexed entries (for capability index generation or debugging).

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pub fn clear(&mut self)

Remove all indexed tools.

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