backend-api SKILL.md skillA

backend-api from iuliandita/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add iuliandita/skills/backend-api@git:20261003.496420b

Pins git:20261003.496420b in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: iuliandita/skills
Path: skills/backend-api/SKILL.md
Versions recorded: 11
Latest version: git:20261003.496420b, committed Oct 3, 2026
First version recorded: Jun 14, 2026
Size: 23,572 bytes
Repository stars: 8
License: MIT

Design and review REST/HTTP APIs, with bounded GraphQL and gRPC contract guidance: OpenAPI, auth, pagination, compatibility, and retries.

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 APIs: HTTP Service Design and Implementation

Design and review HTTP APIs that stay coherent as they grow. Focus on contracts, auth
boundaries, error models, and framework structure for Python and Node.js services.

**Target versions** (October 2026):
- FastAPI **0.142.2**
- Express **5.2.1** (published 2025-12-01)
- NestJS **12.1.2** (major release; check migration notes before upgrading; 12.0.2+ fixes high-severity [microservice](https://github.com/nestjs/nest/security/advisories/GHSA-m8vh-jmq9-5rjg) and [Fastify middleware-bypass](https://github.com/nestjs/nest/security/advisories/GHSA-9c5c-9qcx-q35q) advisories)
- OpenAPI Specification **3.2.1** (published 2026-09-10)
- HTTP Semantics: **RFC 9110** (June 2022)
- Problem Details for HTTP APIs: **RFC 9457** (July 2023)
- OAuth 2.0 Security Best Current Practice: **RFC 9700** (January 2025)

Security check (2026-10-02): Express/NestJS upload stacks using Multer <2.3.0 are affected by
high-severity multipart denial of service, [CVE-2026-82333](https://github.com/expressjs/multer/security/advisories/GHSA-535w-7cp7-47q4).
Upgrade Multer to 2.4.0+ (2.4.0 also fixes medium-severity aborted-upload disk exhaustion,
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add iuliandita/skills/backend-api@sha256:a9ace8d5d41b669d

The line at the top of this page pins the label git:20261003.496420b, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_soimp3cyrhkts7ji.svg)](https://markdownregistry.com/a/art_soimp3cyrhkts7ji)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 11 versions of this file, between Jun 14, 2026 and Oct 3, 2026, about one every 11 days.

version	committed	commit	size	audit
git:20261003.496420b latest	2026-10-03	496420b	23,572 B	A	view · diff
git:20261002.a7f9a1c	2026-10-02	a7f9a1c	23,857 B	A	view · diff
git:20260924.eec72d2	2026-09-24	eec72d2	23,696 B	A	view · diff
git:20260920.ac01853	2026-09-20	ac01853	23,575 B	A	view · diff
git:20260916.d6aabe7	2026-09-16	d6aabe7	23,016 B	A	view · diff
git:20260910.6481616	2026-09-10	6481616	22,925 B	A	view · diff
git:20260904.ccfce41	2026-09-04	ccfce41	22,237 B	A	view · diff
git:20260727.4786b50	2026-07-27	4786b50	22,182 B	A	view · diff
git:20260722.99f7e84	2026-07-22	99f7e84	22,862 B	A	view · diff
git:20260614.2e827aa	2026-06-14	2e827aa	22,907 B	A	view · diff
git:20260614.4a94e9c	2026-06-14	4a94e9c	22,906 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (23572 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

GitHub

iuliandita/skills · 8 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_soimp3cyrhkts7ji
GET https://markdownregistry.com/api/v1/resolve?ref=iuliandita/skills/backend-api
GET https://markdownregistry.com/api/v1/blob/a9ace8d5d41b669ded286aec63608b37f4e0bc65804b9632d5b70ed87111baf8

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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