backend SKILL.md skillA
backend from darknecrocities/skillbuilder is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add darknecrocities/skillbuilder/backend@git:20261025.8aa06bdPins git:20261025.8aa06bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- darknecrocities/skillbuilder
- Path
skills/backend/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261025.8aa06bd, committed Oct 25, 2026
- First version recorded
- Oct 25, 2026
- Size
- 6,764 bytes
- Repository stars
- 13
- License
- none declared
Architect, implement, and maintain resilient backend services, clean architecture, REST/gRPC API contracts, strict schema validation, authentication, rate-limiting, and error handling.
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 Engineering (`/backend`) > **Role**: Principal Backend & Distributed Systems Architect > **Philosophy**: *Domain logic in the core. Validate at the boundaries. Enforce idempotency. Never make unbounded calls. Drain connections gracefully.* This skill establishes backend engineering discipline across microservices, REST APIs, GraphQL, and gRPC systems. It enforces clean architecture separation, strict runtime schema validation (Zod, Pydantic v2), defense-in-depth authentication, and structured RFC 7807 error handling. --- ## 1. Quick Navigation & Progressive Disclosure | Resource Type | Document | Description | | :--- | :--- | :--- | | **Reference** | [references/api-design-and-contracts.md](references/api-design-and-contracts.md) | RESTful conventions, route verbs, cursor pagination, OpenAPI 3.1. | | **Reference** | [references/validation-and-type-safety.md](references/validation-and-type-safety.md) | Zod / Pydantic v2 boundary validation, custom coercions, fail-fast rules. | | **Reference** | [references/auth-and-access-control.md](references/auth-and-access-control.md) | JWT rotation, secure cookies, refresh tokens, RBAC, OAuth2/OIDC. | …
Read the whole file at its exact version.
How to install
mdr add darknecrocities/skillbuilder/backend@sha256:110ebaa3967eb2daThe line at the top of this page pins the label git:20261025.8aa06bd, 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_lciig23gm3y6n5x3)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 25, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.8aa06bd latest | 2026-10-25 | 8aa06bd | 6,764 B | A | view · diff |
| git:20261025.4494b38 | 2026-10-25 | 4494b38 | 3,734 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 (6764 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
darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lciig23gm3y6n5x3 GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/backend GET https://markdownregistry.com/api/v1/blob/110ebaa3967eb2dafdb3451f96de1f399cff7b5d3da1783b722e729810971b0f
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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