# Build an AI agent

Goal · https://godooo.ai/en/goal/build-ai-agent

> What “Build an AI agent” takes: Build AI agents, LLM API; optional: Long-term memory for agents, Build MCP servers, Evaluate and trace LLM apps.

An agent of your own that uses models and tools to get work done.

## What it takes

- **[Build AI agents](https://godooo.ai/en/capability/agent-building)**: [Dify](https://godooo.ai/en/product/dify), [Coze 扣子](https://godooo.ai/en/product/coze), [LangChain](https://godooo.ai/en/framework/langchain), [LangGraph](https://godooo.ai/en/framework/langgraph)
- **[LLM API](https://godooo.ai/en/capability/llm-api)**: [GPT](https://godooo.ai/en/model/gpt), [GPT-3](https://godooo.ai/en/model/gpt-3), [GPT-4](https://godooo.ai/en/model/gpt-4), [Claude](https://godooo.ai/en/model/claude)
- **[Long-term memory for agents](https://godooo.ai/en/capability/agent-memory)** (optional): [Memory MCP Server](https://godooo.ai/en/mcp/memory), [Letta](https://godooo.ai/en/framework/letta), [Mem0](https://godooo.ai/en/framework/mem0), [Graphiti](https://godooo.ai/en/framework/graphiti)
- **[Build MCP servers](https://godooo.ai/en/capability/mcp-development)** (optional): [FastMCP](https://godooo.ai/en/framework/fastmcp), [MCP Builder](https://godooo.ai/en/skill/mcp-builder), [n8n](https://godooo.ai/en/product/n8n), [Langflow](https://godooo.ai/en/product/langflow)
- **[Evaluate and trace LLM apps](https://godooo.ai/en/capability/llm-evaluation)** (optional): [Langfuse](https://godooo.ai/en/product/langfuse), [promptfoo](https://godooo.ai/en/cli/promptfoo), [Phoenix](https://godooo.ai/en/framework/phoenix), [Ragas](https://godooo.ai/en/framework/ragas)

## Questions

### What is Build an AI agent?

An agent of your own that uses models and tools to get work done. What “Build an AI agent” takes: Build AI agents, LLM API; optional: Long-term memory for agents, Build MCP servers, Evaluate and trace LLM apps.

### Which AI tools do I need for “Build an AI agent”?

Build AI agents: Dify, Coze 扣子, LangChain and LangGraph; LLM API: GPT, GPT-3, GPT-4 and Claude; Long-term memory for agents: Memory MCP Server, Letta, Mem0 and Graphiti; Build MCP servers: FastMCP, MCP Builder, n8n and Langflow; Evaluate and trace LLM apps: Langfuse, promptfoo, Phoenix and Ragas.

---

Last updated 2026-09-24 · Markdown version of https://godooo.ai/en/goal/build-ai-agent. Every page on this site has one: add .md to its address.