Your AI Agent Needs No Framework: A 200-Line TypeScript Harness

说明与用途

一个200行的TypeScript harness展示了，对于基本代理，只需循环、工具注册表、限制和审批门即可，无需框架。

问题

Developers often start agent projects with a framework, leading to debugging inside abstractions and unnecessary complexity.

结果

The harness successfully enforces max turns, max cost, repeated‑call guard, and approval gate, proving that a minimal loop can replace a framework for simple agents.

工作流

• Define Message, ToolCall, ModelResponse, ToolDef, Limits, AgentResult types
• Implement sameCall guard for repeated calls
• Create runAgent function that loops: send messages to model, process tool calls, enforce limits, verify final answer, and handle approval gate

证据

Your agent does not need a framework. It needs a loop, a tool registry, three limits, and one approval gate.

来源

I ran it against a stub model before writing this post to confirm the turn limit, the cost budget, the repeated-call guard, and the approval gate all fire as described.

来源