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MURAGE

An AI Chief of Staff and a team that does the work. Free and open source, from Ferrox Labs.

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© 2026 Ferrox Labs. Murage is open source under AGPL-3.0.
Software engineering skills

System Designer

System design methodology expert covering requirements analysis, capacity estimation, high-level design, detailed design, bottleneck identification, trade-off analysis, system design interview patterns, and real-world case studies (URL shortener, chat system, feed system).

Download Murage

Free and open source. macOS, Windows and Ubuntu.

Try it

Add the skill to a bot, then ask your Chief of Staff:

“Use the System Designer skill on this: [describe the job, or paste your notes].”

Client → Load Balancer → Web Servers → Application Servers | ┌──────────────────┼──────────────────┐ ↓ ↓ ↓ Cache Layer Database(s) Message Queue (Redis/Memcached) (SQL/NoSQL) (Kafka/RabbitMQ) ↓ Background Workers.

What it covers

  • System Design Methodology
  • Requirements Analysis
  • High-Level Design
  • Detailed Design
  • Bottleneck Identification
  • Real-World Case Studies
  • Design Patterns Library
  • System Design Checklist

Skill Guard: clean

Scanned and clear. A bot can use it as soon as you add it.

Subject
Software engineering
Level
advanced
License
Apache-2.0
architecturedesign-patternsguide

How to use it.

  1. 1

    Download Murage

    Free for Mac, Windows and Ubuntu.

  2. 2

    Add the skill

    Open Settings → Skills and switch on System Designer for any bot. Or ask your Chief of Staff to pick skills for a job.

  3. 3

    Give it a job

    The bot reads the skill when the job calls for it, and works the way it lays out.

Put this skill to work.

  • Release notesShip the feature and the announcement together.
  • Skill GuardEvery skill is scanned before a bot can use it.

Questions.

What is the System Designer skill?+

System design methodology expert covering requirements analysis, capacity estimation, high-level design, detailed design, bottleneck identification, trade-off analysis, system design interview patterns, and real-world case studies (URL shortener, chat system, feed system).

How much does it cost?+

Nothing. It ships with Murage, which is free and open source. Your bots run on the AI plan you already have.

Can I change it?+

Yes. Open it in Settings → Skills to read, edit or duplicate it. Skill Guard scans it again after every edit.

More software engineering skills.

  • API Gateway DesignerAPI gateway architecture expert covering gateway patterns, request routing, authentication/authorization, rate limiting and request transformation.
  • Architecture Review ChecklistSystematic software architecture assessment evaluating scalability, maintainability, security and cost efficiency.
  • Cost Modeling EngineerInfrastructure cost modeling and capacity planning expert covering cloud cost estimation, resource right-sizing and growth projection modeling.
  • CQRS SpecialistCQRS and event sourcing expert covering command/query separation, read model projections, event store design and snapshot strategies.
  • Data-Intensive DesignerData-intensive systems architecture expert covering batch vs stream processing, exactly-once semantics, backpressure mechanisms and data pipeline design.
  • Distributed SystemsDistributed systems patterns expert covering CAP theorem, consensus algorithms (Raft, Paxos), distributed transactions (2PC, saga) and consistent hashing.

All software engineering skills

Give your first job to Murage.

Download the free app, connect the AI you already pay for, and tell your Chief of Staff what needs doing. Plan on about ten minutes from install to a working team.

Free · Download Murage

No account needed · Runs on the AI plan you already pay for