# API Reference — PageIndexRAG

Vectorless RAG pipeline: keyword index + BM25 scoring.
No embeddings, no vector store required.

## Pipeline

```{eval-rst}
.. autoclass:: ractogateway.rag.page_index.pipeline.PageIndexRAG
   :members:
   :show-inheritance:
   :no-index:
```

## Models

```{eval-rst}
.. automodule:: ractogateway.rag.page_index._models
   :members:
   :show-inheritance:
   :no-index:
```

## BM25 Engine

```{eval-rst}
.. automodule:: ractogateway.rag.page_index._bm25
   :members:
   :show-inheritance:
   :no-index:
```

## OCR Backends

```{eval-rst}
.. automodule:: ractogateway.rag.page_index._ocr
   :members:
   :show-inheritance:
   :no-index:
```