system-design SKILL.md skillA
system-design from d-padmanabhan/agent-engineering-handbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add d-padmanabhan/agent-engineering-handbook/system-design@git:20260906.0766fecPins git:20260906.0766fec in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- d-padmanabhan/agent-engineering-handbook
- Path
skills/system-design/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260906.0766fec, committed Sep 6, 2026
- First version recorded
- Aug 19, 2026
- Size
- 9,956 bytes
- Repository stars
- 20
- License
- MIT
Designs and reviews production software systems using requirements, SLOs, capacity estimates, service and data boundaries, consistency, scaling, reliability, security, observability, cost, and migration plans. Use for system design, architecture review, scalability, capacity planning, high availability, multi-tenancy, cell-based or cellular architecture, deployment stamps, technical design documents, or end-to-end production architecture.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Production System Design Use this skill to turn business requirements and operational constraints into the simplest production architecture that can be built, operated, evolved, and recovered safely. This is not an interview-diagram generator. Every component and complexity must earn its place through a requirement, measured constraint, or explicit risk. ## System Design Contract - Start with requirements, constraints, scale, and failure tolerance before selecting technologies. - Separate facts, assumptions, estimates, and decisions. - Quantify demand and SLOs enough to expose bottlenecks; never invent precision. - Tie every consequential mechanism to a quality-attribute scenario, measurable evidence, and a rollback or revisit trigger. - Prefer a modular monolith or one ownership boundary until independent scaling, deployment, security, data ownership, or team autonomy justifies a split. - Keep data ownership explicit. Shared databases and synchronous call chains create coupling even when diagrams show separate services. …
Read the whole file at its exact version.
How to install
mdr add d-padmanabhan/agent-engineering-handbook/system-design@sha256:a44f65f548d041feThe line at the top of this page pins the label git:20260906.0766fec, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_i4v4znbnkrsqqtm7)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 19, 2026 and Sep 6, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260906.0766fec latest | 2026-09-06 | 0766fec | 9,956 B | A | view · diff |
| git:20260830.f3ab767 | 2026-08-30 | f3ab767 | 9,858 B | A | view · diff |
| git:20260825.bf1c995 | 2026-08-25 | bf1c995 | 9,726 B | A | view · diff |
| git:20260824.a419591 | 2026-08-24 | a419591 | 9,725 B | A | view · diff |
| git:20260819.d23bb73 | 2026-08-19 | d23bb73 | 9,727 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9956 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
d-padmanabhan/agent-engineering-handbook · 20 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i4v4znbnkrsqqtm7 GET https://markdownregistry.com/api/v1/resolve?ref=d-padmanabhan/agent-engineering-handbook/system-design GET https://markdownregistry.com/api/v1/blob/a44f65f548d041fe948f78af87aabcb9038e019578d71a7f28a2903267190fce
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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