system-design-principles SKILL.md skillA
system-design-principles from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/system-design-principles@git:20261021.8da3953Pins git:20261021.8da3953 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.claude/skills/system-design/system-design-principles/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261021.8da3953, committed Oct 21, 2026
- First version recorded
- Aug 30, 2026
- Size
- 3,926 bytes
- Repository stars
- 583
- License
- MIT
Define module boundaries, dependency direction, data ownership, resilience, and distributed-system trade-offs. Use for architecture, service boundaries, coupling, scalability, or failure-cascade decisions; defer session facilitation to system-design-methodology.
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
# System Design Principles ## **Priority: P0 (CRITICAL)** ## Workflow: Evaluate Architecture for New Feature 1. Identify bounded contexts and module boundaries 2. Name the data owner and define dependency direction (outer layers depend on inner) 3. Select communication pattern (sync REST, async event, or hybrid) and failure behavior 4. Validate CAP trade-offs only for distributed components 5. Record boundary, trade-off, and rollback in an ADR For a failing synchronous dependency, keep the critical path explicit: timeout and circuit-break the dependency, return a defined degraded/fallback result where safe, and move non-critical notifications to an asynchronous event. ## Architectural Principles - **SoC**: Divide into distinct sections per concern. - **SSOT**: One source, reference elsewhere. - **Fail Fast**: Fail visibly when errors occur. - **Graceful Degradation**: Core functional even if secondary fails. ## Modularity & Coupling - **High Cohesion**: Related functionality in one module. - **Loose Coupling**: Use interfaces for communication. - **DI**: Inject dependencies, don't hardcode. …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/system-design-principles@sha256:cc23d605aa944bf3The line at the top of this page pins the label git:20261021.8da3953, 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_ctgttlf26g56dz27)
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Versions
The registry has recorded 3 versions of this file, between Aug 30, 2026 and Oct 21, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261021.8da3953 latest | 2026-10-21 | 8da3953 | 3,926 B | A | view · diff |
| git:20261008.184bb1c | 2026-10-08 | 184bb1c | 3,696 B | A | view · diff |
| git:20260830.00e03f4 | 2026-08-30 | 00e03f4 | 3,433 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 (3926 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
hoangnguyen0403/agent-skills-standard · 583 stars · license MIT · pushed 2026-11-07 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_ctgttlf26g56dz27 GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/system-design-principles GET https://markdownregistry.com/api/v1/blob/cc23d605aa944bf39e8f7cb32f1d6293959b3a7972ffbf6fd4200ee6e5656397
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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