Mneme Decision MCP server

Mneme is a helper that keeps your team's engineering decisions in one place and makes them available to AI coding tools. It is handy if you use an AI assistant to write or change code and you want it to follow the rules your team already agreed on. The Decision MCP server is the part that lets your AI ask about those decisions and suggest new ones.

What this MCP server does

You ask your AI something about your project's rules, like which decisions apply to a certain folder. Your AI uses this helper to search Mneme's decision list. Mneme sends back the matching decisions and where they came from. If your AI wants to suggest a new decision, it can send a proposal, but that proposal is not official until a person accepts it. Everything stays on your computer, and no one can change the rules through the AI.

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What you can do with it

• Look up which architecture decisions apply to a file or folder
• Search your team's recorded decisions by keyword
• Read the full text of a single decision
• Trace where a decision came from and what it replaced
• Suggest a new decision for a human to review
• Send several suggestions at once
• Check the current state of a decision proposal

Try asking your AI

• “Which architecture decisions apply to the config folder?”
• “Search our decisions for anything about JSON versus YAML”
• “Show me the full text of the decision called config-format”
• “Propose a new decision: we should use Postgres for all new services”

What it gives back to you

You get back a list of matching decisions with short summaries and their IDs. If you ask about one decision, you get its full text and where it came from. If you ask about a folder, you get the decisions that apply there. Proposals show up as suggestions waiting for a person to accept or reject.

Before you start

Who it's for

Software teams and developers who use AI coding assistants and want them to follow the team's architecture rules.