Retrieve a complete list of all Needle document collections accessible to your account. Returns detailed information including collection IDs, names, and creation dates. Use this tool when you need to: - Get an overview of available document collections - Find collection IDs for subsequent operations - Verify collection existence before performing operations The response includes metadata that's required for other Needle operations.

该工具无需必填参数，直接调用即可

Create a new document collection in Needle for organizing and searching documents. A collection acts as a container for related documents and enables semantic search across its contents. Use this tool when you need to: - Start a new document organization - Group related documents together - Set up a searchable document repository Returns a collection ID that's required for subsequent operations. Choose a descriptive name that reflects the collection's purpose for better organization.

必填参数：name

Fetch comprehensive metadata about a specific Needle collection. Provides detailed information about the collection's configuration, creation date, and current status. Use this tool when you need to: - Verify a collection's existence and configuration - Check collection metadata before operations - Get creation date and other attributes Requires a valid collection ID and returns detailed collection metadata. Will error if collection doesn't exist.

必填参数：collection_id

Retrieve detailed statistical information about a Needle collection's contents and status. Provides metrics including: - Total number of documents - Processing status of documents - Storage usage and limits - Index status and health Use this tool to: - Monitor collection size and growth - Verify processing completion - Check collection health before operations Essential for ensuring collection readiness before performing searches.

必填参数：collection_id

List all documents stored within a specific Needle collection with their current status. Returns detailed information about each file including: - File ID and name - Processing status (pending, processing, complete, error) - Upload date and metadata Use this tool when you need to: - Inventory available documents - Check processing status of uploads - Get file IDs for reference - Verify document availability before searching Essential for monitoring document processing completion before performing searches.

必填参数：collection_id

Add a new document to a Needle collection by providing a URL for download. Supports multiple file formats including: - PDF documents - Microsoft Word files (DOC, DOCX) - Plain text files (TXT) - Web pages (HTML) The document will be: 1. Downloaded from the provided URL 2. Processed for text extraction 3. Indexed for semantic search Use this tool when you need to: - Add new documents to a collection - Make documents searchable - Expand your knowledge base Important: Documents require processing time before they're searchable. Check processing status using needle_list_files before searching new content.

必填参数：collection_id、name、url

Perform intelligent semantic search across documents in a Needle collection. This tool uses advanced embedding technology to find relevant content based on meaning, not just keywords. The search: - Understands natural language queries - Finds conceptually related content - Returns relevant text passages with source information - Ranks results by semantic relevance Use this tool when you need to: - Find specific information within documents - Answer questions from document content - Research topics across multiple documents - Locate relevant passages and their sources More effective than traditional keyword search for: - Natural language questions - Conceptual queries - Finding related content Returns matching text passages with their source file IDs.

必填参数：collection_id、query