> For a complete page index of the Captain API documentation, fetch https://docs.captain.dev/llms.txt?excludeSpec=true

# Multimodal Search & Agent-Friendly Docs

* **[Multimodal search](/guides/multimodal-search)**: Search across video (≤120s clips), audio (≤80s clips), and images alongside text in a single query
* **Cross-modal reranking** for multimodal collections alongside the text reranker
* **Better recall on short or ambiguous queries**
* **ARN-based indexing** for S3
* **Agent-friendly documentation**: llms.txt, structured API reference for LLMs