Crate polyc_embeddings 

Provider-agnostic embedding trait for polychrome.

This crate defines the EmbeddingProvider trait that every concrete embedding backend implements. It is the embedding-side analogue of polyc-llm’s LlmProvider: a thin seam so the tool-search layer can swap backends — pure-Rust static embeddings (model2vec-rs) by default, a heavier transformer (candle + EmbeddingGemma) when shallow matching isn’t enough — without touching its own code.

Tool retrieval is a shallow-semantic task over short strings (a query vs. tool name+description), so the default backend is intentionally tiny and fully deterministic: a fixed lookup table + mean pooling embeds bit-for-bit identically for a pinned model across hardware, which lines up with the reproducible prompt-hash discipline elsewhere in the system.

Modules

• error — the EmbeddingError bound that EmbeddingProvider::Error must satisfy.
• erased — type erasure to a single DynEmbeddingProvider trait object, mirroring polyc-llm’s erased module.

Re-exports

pub use erased::BoxError;

pub use erased::DynEmbeddingProvider;

pub use erased::ErasedEmbeddingProvider;

pub use erased::into_dyn;

pub use error::EmbeddingError;

Modules

erased

Type erasure for EmbeddingProvider so callers can hold a single Arc<dyn EmbeddingProvider> regardless of which backend is configured.

error

EmbeddingError marker trait and a reference implementation.

Traits

EmbeddingProvider

The seam between the tool-search engine and any concrete embedding backend.