Data Bricklaying Diary

Nov 1, 2026 · Backend Development

Why MCP and Workflows Aren't Enough: Defining Business Action Contracts

The article explains why Model Context Protocol (MCP) and workflows alone cannot enforce business rules like parameter provenance, approval validation, idempotency, and result verification, using a procurement example to illustrate the need for explicit Action contracts that define conditions, approvals, and error handling.