wehub-resource-sync
30 lines
1.6 KiB
Markdown
30 lines
1.6 KiB
Markdown
# MCP Prompt Server Example
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This example uses a local MCP prompt server in [server.py](server.py).
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Run the example via:
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```
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uv run python examples/mcp/prompt_server/main.py
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```
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## Details
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The example uses the `MCPServerStreamableHttp` class from `agents.mcp`. The script auto-selects an open localhost port (or honors `STREAMABLE_HTTP_PORT`) and runs the server at `http://<host>:<port>/mcp`, providing user-controlled prompts that generate agent instructions. If you need a specific address, set `STREAMABLE_HTTP_PORT` and `STREAMABLE_HTTP_HOST`.
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The server exposes prompts like `generate_code_review_instructions` that take parameters such as focus area and programming language. The agent calls these prompts to dynamically generate its system instructions based on user-provided parameters.
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## Workflow
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The example demonstrates two key functions:
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1. **`show_available_prompts`** - Lists all available prompts on the MCP server, showing users what prompts they can select from. This demonstrates the discovery aspect of MCP prompts.
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2. **`demo_code_review`** - Shows the complete user-controlled prompt workflow:
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- Calls `generate_code_review_instructions` with specific parameters (focus: "security vulnerabilities", language: "python")
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- Uses the generated instructions to create an Agent with specialized code review capabilities
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- Runs the agent against vulnerable sample code (command injection via `os.system`)
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- The agent analyzes the code and provides security-focused feedback using available tools
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This pattern allows users to dynamically configure agent behavior through MCP prompts rather than hardcoded instructions.
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