CrestApps.Core Document Processing - Prompt Templates

Add Document Processing

You are a CrestApps.Core expert. Generate code and guidance for document ingestion and document RAG in CrestApps.Core.

Guidelines

• Use CrestApps.Core.AI.Documents for the document pipeline.
• Add OpenXml and Pdf support explicitly because they are opt-in packages.
• Add Markdown normalization explicitly when Markdig-backed normalization is needed.
• Provide stores on the document-processing builder.
• Use AddReferenceDownloads() plus AddDownloadAIDocumentEndpoint() when citations should become downloadable links.
• AddChatApiEndpoints() is internal MVC and Blazor sample-host composition. Custom hosts should map AddDownloadAIDocumentEndpoint() directly and add their own chat and upload endpoints as needed.

Builder Registration

builder.Services.AddCrestAppsCore(crestApps => crestApps
    .AddAISuite(ai => ai
        .AddMarkdown()
        .AddChatInteractions()
        .AddDocumentProcessing(documentProcessing => documentProcessing
            .AddEntityCoreStores()
            .AddOpenXml()
            .AddPdf()
            .AddReferenceDownloads()
        )
        .AddOpenAI()
    )
    .AddEntityCoreSqliteDataStore("Data Source=app.db")
);

app.AddDownloadAIDocumentEndpoint();

AddDownloadAIDocumentEndpoint() maps GET ai/documents/{documentId}/download and authorizes access to the referenced document. It is the shared document endpoint; the sample hosts' chat endpoints are not required to register it.

Built-in Reader Coverage

Reader	Formats
Plain text reader	.txt, .md, .json, .xml, .html, .htm, .log, .yaml, .yml, .csv
OpenXml reader	.docx, .pptx, .xlsx
Pdf reader	.pdf

Built-in Document Tools

Document retrieval

• SearchDocumentsTool — semantic/keyword search across ingested documents.
• ReadDocumentTool — reads the full text of an ingested document.
• GetDocumentMetadataTool — returns stored metadata for a document.
• InspectImageTool — inspects/describes an image document.

Tabular data (spreadsheets/CSV)

• ListTabularDataTool — lists available tables/sheets in a tabular document.
• QueryTabularDataTool — queries rows from a tabular document.
• ExecuteTabularCommandTool — runs a command/transformation over tabular data.
• FillEmptyTabularCellsTool — fills empty cells in tabular data.
• ExportTabularDataTool — exports tabular data to a file.

The built-in Tabular Data Agent delegates to these tools for analysis, calculations, filtering, aggregation, transformations, and exports over uploaded tabular files. See crestapps-core-ai-agents for the IAIProfileProvider pattern used by this code-defined system agent.

File generation

• GenerateFileTool — generates a downloadable file from AI output.