backend-systems-guidance SKILL.md skillA
backend-systems-guidance from n-n-code/n-n-code-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add n-n-code/n-n-code-skills/backend-systems-guidance@git:20260904.6c1f699Pins git:20260904.6c1f699 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- n-n-code/n-n-code-skills
- Path
.agents/skills/backend-systems-guidance/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260904.6c1f699, committed Sep 4, 2026
- First version recorded
- Apr 6, 2026
- Size
- 7,938 bytes
- Repository stars
- 4
- License
- MIT
Canonical overlay for non-trivial server-side networked implementation and review involving multi-layer architecture, data access, reliability, trust boundaries, or deeper testing; use `backend-guidance` for thin routine handlers. Compose with matching implementation guidance for APIs, queues, repositories, transactions, or auth-sensitive flows.
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
# Backend Systems Guidance This is a composable overlay, not a standalone workflow. Use alongside the repo's implementation skill when the change touches backend code. Choose activity independently from backend depth. A review request is read-only unless the user also asks for remediation; use the architecture and reliability rules as inspection criteria and report findings instead of changing code. This is the canonical backend overlay in this repo. It extends the thin baseline `backend-guidance` overlay with stronger guidance for non-trivial service boundaries, repositories, reliability, and trust boundaries. Prefer it over `backend-guidance` when the task includes new endpoints or consumers, multi-layer refactors, repository or transaction work, auth or trust-boundary logic, or backend review that needs explicit testing and reliability checks. Use the bundled references only when needed: - [references/trigger-evals.md](references/trigger-evals.md) for lightweight prompt checks when revising the trigger or scope ## When to use - the repo has server-side networked code such as HTTP handlers, gRPC methods, webhooks, queue consumers, or message producers …
Read the whole file at its exact version.
How to install
mdr add n-n-code/n-n-code-skills/backend-systems-guidance@sha256:f514fc0dd26a923fThe line at the top of this page pins the label git:20260904.6c1f699, 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_4mvnjoyjhgwjsvch)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 6, 2026 and Sep 4, 2026, about one every 38 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.6c1f699 latest | 2026-09-04 | 6c1f699 | 7,938 B | A | view · diff |
| git:20260822.4a165ab | 2026-08-22 | 4a165ab | 7,869 B | A | view · diff |
| git:20260423.b0aeb97 | 2026-04-23 | b0aeb97 | 6,731 B | A | view · diff |
| git:20260406.9f29dd1 | 2026-04-06 | 9f29dd1 | 6,628 B | A | view · diff |
| git:20260406.ebcc193 | 2026-04-06 | ebcc193 | 6,753 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 (7938 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
n-n-code/n-n-code-skills · 4 stars · license MIT · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4mvnjoyjhgwjsvch GET https://markdownregistry.com/api/v1/resolve?ref=n-n-code/n-n-code-skills/backend-systems-guidance GET https://markdownregistry.com/api/v1/blob/f514fc0dd26a923f1df028fe3050205ffe595fd358e18ce55680cbd82a68abf7
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.