OpenAI Responses API + MCP in Practice: From Function Calling to Agent Workflows

Wed, 11 Feb 2026 23:15:00 +0800

If you’ve already used function calling but keep writing glue code for every non-trivial task, you’re likely at the point where Responses API + MCP makes more sense.

This guide is practical: how to move from single tool calls to a scalable agent workflow where retrieval, execution, validation, and write-back follow a consistent structure.

AI Workflow on Mengboy 技术笔记

OpenAI Responses API + MCP in Practice: From Function Calling to Agent Workflows