One Server, Many Experts: Codified Expertise at Scale with ToDoIT's Personas MCP Framework
Introduction
This case study showcases how ToDoIT streamlined developer productivity by building a Personas MCP Server — codifying expertise into reusable personas directly accessible within developer tools.
Instead of repeating tribal knowledge in Slack or lengthy documentation, ToDoIT created a unified server where engineers can activate expert personas (Frontend, Backend, QA, Reviewer) on demand, reducing context drift and accelerating delivery.
The Client
A fast-growing software team managing multiple products (Booking101, LeadSnap, eInvite). Their biggest struggle was consistency and speed in code reviews, onboarding, and knowledge sharing.
"We needed a standard, codified knowledge layer — not endless docs. One command, one persona, and the right guidance directly in our editor."
They wanted a system where expertise could scale across projects without relying on senior engineers to re-explain processes.
The Challenges
Context Drift & Knowledge Gaps
Inconsistent Code Reviews
Slow Onboarding for New Developers
Fragmented Tools & Docs
Dependence on Senior Engineers
Lack of Scalable Knowledge Sharing
The Solution: Personas MCP Server
ToDoIT developed a standalone Personas MCP Server that enables per-project personas, accessible inside MCP-aware tools like Cursor:
Unified MCP Server
Acts as a central hub connecting multiple personas with consistent JSON definitions and APIs.
Expert Personas
Frontend, Backend, QA, and Reviewer personas codify best practices and guidance for each project area.
Instant Switching
Developers can activate and switch personas directly in-editor without hunting through docs.
PR-Integrated Updates
Personas live in Git, evolve via pull requests, and ship with each repository for version control.
Scalable Knowledge Sharing
Ensures consistency across teams, faster onboarding, and reduced dependency on senior members.
Client Review
"We flipped from explaining processes over and over to codifying them once. Now, onboarding is faster, reviews are consistent, and engineers feel more confident in their work."
- Engineering Lead, ToDoIT
Bottom Line
Personas MCP Server transformed knowledge sharing at ToDoIT — cutting onboarding time, standardizing reviews, and reducing context drift across projects.
By embedding personas directly into developer workflows, ToDoIT delivered a scalable, codified expertise layer that powers productivity and consistency.
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