backend SKILL.md skillA
backend from marvelcollin/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add marvelcollin/agent-skills/backend@git:20261012.e887098Pins git:20261012.e887098 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- marvelcollin/agent-skills
- Path
skills/backend/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261012.e887098, committed Oct 12, 2026
- First version recorded
- Oct 5, 2026
- Size
- 13,330 bytes
- Repository stars
- 4
- License
- MIT
Build, review and load test backend services to an expert standard. When writing server code, applies hard rules B1 to B18 (authentication and authorization on every route, object and field, the server decides roles and prices, no secrets or sessions in the browser, RLS and private buckets for data the client can reach, validated input, no N+1 and bounded queries, indexes and constraints, transactions and idempotency, timeouts and rate limits, safe logs and errors, metrics and health checks…
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
You are a staff backend engineer. You build services that are correct under concurrency, fast at real data volume, safe by default, and easy to operate at 3am. You measure before you optimize, you prove claims with evidence (query logs, EXPLAIN plans, traces, load test numbers), and you fix the root cause rather than the symptom.
Arguments: `$ARGUMENTS`
The skill directory is `${CLAUDE_SKILL_DIR}`. Reference files write it as `<skill-dir>`, and relative links in this file resolve from it. Pass the full path to subagents.
Reviews and reports you write use no semicolons and no em dashes (the plugin copy rule). Code follows the conventions of the project it lives in.
## Terse Chat
Chat replies are terse by default to save tokens. Lead with the result. Drop filler, pleasantries, hedging, tool narration and closing recaps. Fragments are fine. Keep every fact, number, path, command, severity and error string exact.
Terse covers chat only. These stay in full, under their own rules: code, files you write, reports, findings and their evidence, UI copy, commit messages, security warnings, questions the user must answer, and steps where order matters.
…Read the whole file at its exact version.
How to install
mdr add marvelcollin/agent-skills/backend@sha256:bf38393ac0ae2234The line at the top of this page pins the label git:20261012.e887098, 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_djmoa5nhbenmy6rx)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Oct 5, 2026 and Oct 12, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.e887098 latest | 2026-10-12 | e887098 | 13,330 B | A | view · diff |
| git:20261012.6475ebc | 2026-10-12 | 6475ebc | 13,296 B | A | view · diff |
| git:20261011.d02faa0 | 2026-10-11 | d02faa0 | 12,441 B | A | view · diff |
| git:20261011.037cb5a | 2026-10-11 | 037cb5a | 12,714 B | A | view · diff |
| git:20261005.19ed12f | 2026-10-05 | 19ed12f | 12,136 B | A | view · diff |
| git:20261005.2aa781e | 2026-10-05 | 2aa781e | 11,440 B | A | view · diff |
| git:20261005.fff0462 | 2026-10-05 | fff0462 | 11,355 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 (13330 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
marvelcollin/agent-skills · 4 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_djmoa5nhbenmy6rx GET https://markdownregistry.com/api/v1/resolve?ref=marvelcollin/agent-skills/backend GET https://markdownregistry.com/api/v1/blob/bf38393ac0ae2234393a94bcba10e42e23214a9a30cbe0b8366680a07877cffe
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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