Repeatability
High
Validation middleware follows a highly repeatable pattern: define schema, validate request body, return error on failure. Doing this across 8 endpoints is structurally identical work each time, which strongly favors automation.
Ambiguity Tolerance
High
Success criteria are concrete — schemas exist, validation runs, SQL injection vectors are blocked, and error messages are returned. A code agent can verify its own output compiles, passes linting, and covers the specified endpoints.
Data & Tool Availability
Medium
The agent needs the actual route files, existing request body shapes, and any business rules on field constraints (e.g., max lengths, allowed values). If the codebase is shared, this is fully solvable; without it, the agent must guess at schemas.
Error Cost
Medium
Overly strict validation could break legitimate requests in production, and missed sanitization could leave injection vectors open. Both are real but reversible — code review and testing before deployment catch most issues.
Human Judgment Required
Low
Choosing between joi and zod, structuring middleware, and writing sanitization logic are well-documented engineering decisions with clear best practices. No taste, ethics, or relationship context is needed here.