Building Document Operations with Reader, Writer, and Code

Document workflows are a good stress test for orchestration quality.

Reference architecture

• Reader node ingests files or tabular metadata.
• Code node normalizes and validates structure.
• Decision node classifies confidence and risk.
• Writer node commits approved outputs to target systems.

Why this pattern works

It keeps extraction, validation, and write concerns separate.

That separation makes failures diagnosable:

• extraction failures are ingestion issues,
• validation failures are transformation issues,
• write failures are side-effect issues.

High-value additions

• add Conversation review for ambiguous fields,
• attach MCP tools for policy lookups,
• template output documents for consistency.

Document automation fails when teams collapse these concerns into a single opaque step.