DocumentMCP has two tools with basic schemas and descriptions, but significant gaps limit production readiness. Both tools have descriptions (10-20 chars baseline met), and input schemas are present with typed parameters. However, descriptions lack depth on WHEN to use each tool, error recovery guidance, and parameter constraints. No output schema documentation. Error handling exists but lacks actionable recovery hints. Tool names follow verb_noun convention (read_*, edit_*) but descriptions don't explain state-modifying consequences or prerequisites. Missing parameter descriptions for some fields and no enum constraints despite constrained inputs (doc_id is a fixed set).

• Add enum constraint to doc_id parameter: declare valid values as ['deposition.md', 'report.pdf', 'financials.docx', 'outlook.pdf', 'plan.md', 'spec.txt'] to prevent hallucinated IDs.
• Document output schemas: read_doc_contents returns {type: 'string', description: 'The full text contents of the document'}; edit_document returns {type: 'string', description: 'Confirmation message with the edited doc_id'}.
• Enhance edit_document description to include state-modification warning: 'Permanently modifies the document by replacing text. This operation cannot be undone. Use with caution.'
• Improve error messages with recovery hints: catch ValueError and return 'Doc not found. Available docs: [deposition.md, report.pdf, ...]. Try again with a valid doc_id.'
• Add parameter constraints to old_string and new_string: 'Must match exactly, including whitespace. If the string appears multiple times, only the first occurrence is replaced.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry