ctfd SKILL.md skillA
ctfd from lu1sdv/skillsmd is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lu1sdv/skillsmd/ctfd@git:20260314.993db98Pins git:20260314.993db98 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lu1sdv/skillsmd
- Path
ctfd/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260314.993db98, committed Mar 14, 2026
- First version recorded
- Feb 27, 2026
- Size
- 13,367 bytes
- Repository stars
- 2
- License
- none declared
Use when developing, debugging, deploying, or maintaining any CTFd instance or fork - Docker stack issues, plugin development, CSRF 302 errors, theme customization, database migrations, nginx proxy misconfig, SQLAlchemy 1.4 gotchas, pytest test infrastructure, or API 500 responses.
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
# CTFd Development & Operations
CTFd is a Python 3.11 Flask-based Capture The Flag platform. SQLAlchemy 1.4, Redis, Jinja2 themes, plugin system.
## When to Use
- Developing CTFd plugins (custom challenge types, scoring, auth)
- Debugging CSRF 302 errors, API 500 responses, or session issues
- Standing up or modifying the Docker Compose stack (nginx, MySQL, Redis)
- Customizing Jinja2 themes or static assets
- Writing pytest tests against CTFd's Flask test infrastructure
- Running database migrations with SQLAlchemy 1.4
- Diagnosing nginx reverse proxy misconfigurations
## When NOT to Use
- Other CTF platforms (CTFx, FBCTF) — different codebases
- General Flask development unrelated to CTFd
## Architecture
```
nginx → ctfd (gunicorn+gevent) → MySQL/SQLite + Redis
├── plugins/ # Extensible plugin system
└── themes/ # Jinja2 theme directories
```
## Quick Reference
```bash
# Docker stack
docker compose up --build -d # Build + start
docker compose logs -f ctfd # Stream logs
docker compose exec ctfd bash # Shell in
docker compose down # Stop
# Testing
…Read the whole file at its exact version.
How to install
mdr add lu1sdv/skillsmd/ctfd@sha256:fdbba780d882c1d9The line at the top of this page pins the label git:20260314.993db98, 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_gqgwy4sgzlw44uny)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Feb 27, 2026 and Mar 14, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260314.993db98 latest | 2026-03-14 | 993db98 | 13,367 B | A | view · diff |
| git:20260227.cbcbf27 | 2026-02-27 | cbcbf27 | 12,806 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 (13367 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
lu1sdv/skillsmd · 2 stars · license none declared · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gqgwy4sgzlw44uny GET https://markdownregistry.com/api/v1/resolve?ref=lu1sdv/skillsmd/ctfd GET https://markdownregistry.com/api/v1/blob/fdbba780d882c1d9878e399cc8eeb308a68265a6d50642fcc234f3b9d98f7fb6
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.