backend SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
backend from dojocodinglabs/code-sensei is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dojocodinglabs/code-sensei/backend@git:20260207.d76e1caPins git:20260207.d76e1ca in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dojocodinglabs/code-sensei
- Path
skills/backend/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260207.d76e1ca, committed Feb 7, 2026
- Size
- 2,984 bytes
- Repository stars
- 14
- License
- MIT
Servers, routes, APIs, and backend architecture. Activated when Claude creates server-side code, API routes, or Express/Fastify/Next.js API handlers.
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 Development — CodeSensei Teaching Module
## What is a Backend?
- **Analogy:** If your website is a restaurant, the frontend is the dining room (what customers see) and the backend is the kitchen (where the real work happens). The backend stores data, processes requests, handles logins, and talks to databases.
- **Key insight:** The backend runs on a SERVER (a computer somewhere in the cloud), not in the user's browser.
## Servers
- **Analogy:** A server is like a receptionist. It sits there waiting for requests ("I want to see the homepage" or "save this form data"), then responds appropriately.
- **Express.js** is the most common server framework in vibecoded projects. It's like a template for building that receptionist — you tell it "when someone asks for X, do Y."
## Routes / Endpoints
- **Analogy:** Routes are like departments in a company. `/api/users` is the Users department. `/api/products` is Products. Each one handles specific requests.
- **HTTP Methods (the verbs):**
- `GET` — "Give me data" (reading)
- `POST` — "Here's new data, save it" (creating)
- `PUT`/`PATCH` — "Update this existing data" (editing)
- `DELETE` — "Remove this data" (deleting)
…Read the whole file at its exact version.
How to install
mdr add dojocodinglabs/code-sensei/backend@sha256:ff33cc8031a06cf5The line at the top of this page pins the label git:20260207.d76e1ca, 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_6guzogoaz7n7avub)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Feb 7, 2026.
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 (2984 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
dojocodinglabs/code-sensei · 14 stars · license MIT · pushed 2026-10-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6guzogoaz7n7avub GET https://markdownregistry.com/api/v1/resolve?ref=dojocodinglabs/code-sensei/backend GET https://markdownregistry.com/api/v1/blob/ff33cc8031a06cf5b88ced3b9a146595705ab315a839e682cc3cf02b4dca3407
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.
More from dojocodinglabs/code-sensei
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