The Rules MCP Server provides coding agents with on-demand access to context-specific rules and best practices, primarily for tasks like writing tests.
Fetch Task-Specific Rules: Access guidelines for writing tests, authoring UI, or reviewing PRs.
Language-Specific Support: Currently supports Python and TypeScript with dedicated rules for each.
Contextual Delivery: Rules are dynamically fetched based on relevance to the current task, reducing distractions.
Tool Integration: Works seamlessly with Claude Code, Cursor, and Claude Desktop.
Centralized Best Practices: Eliminates the need for manually managing coding guidelines across different projects or IDEs.
Supports deployment of the MCP server on Netlify's platform, enabling hosting of rules and guidelines.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Rules MCP Serverget rules for writing tests in python"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
My Rules
An MCP server for all my rules, prompts, etc etc. Allows agents to call rules on demand.
There's no point filling 4 paragraphs of instructions for how to write tests if your current session isn't going to write a test.
Spiritually similar to Cursor's rules.
Usage
Claude Code
Cursor
Claude Desktop
Related MCP server: Google Research MCP
What's It Do?
Allows coding agents to lookup rules on demand within the context of their current task.
Why?
It's really annoying trying to carry all these little notes between projects/IDEs.
I don't want to have to manually invoke rules.
How's It Work?
Clearly-defined tool descriptions allow the agent to fetch rules on demand, only if they appear to be relevant.
What Doesn't work?
Patterns must be associated with a specific action. For example, "writing tests", "authoring UI", "reviewing a PR".
The agent ultimately decides if it's going to call the tool. Sometimes it does. Sometimes it doesn't.
Tools
get_rules_for_writing_testsUse when: writing any type of test,
Inputs:
language(string)
get_rules_for_composing_ui
Use when: creating new frontend components
Prompts
In Claude Code, invoke prompts as slash commands.
pr-review
Use when: you want feedback on a unit of work
/pr-review
See resources/pr-review.md for the full template.
Resources
Dev
Start the server
Open MCP inspector