security-first-validator SKILL.md skillA
security-first-validator from smicolon/ai-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smicolon/ai-kit/security-first-validator@git:20260215.92455aaPins git:20260215.92455aa in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smicolon/ai-kit
- Path
packs/django/skills/security-first-validator/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260215.92455aa, committed Feb 15, 2026
- Size
- 11,704 bytes
- Repository stars
- 7
- License
- MIT
This skill should be used when the user asks to "create an API endpoint", "add a view", "write a viewset", "create a serializer", or when writing Django REST Framework code. Enforces security requirements (permissions, authentication, rate limiting).
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
# Security-First Validator
Enforces security requirements for all Django REST Framework API endpoints.
## Activation Triggers
This skill activates when:
- Creating API views or viewsets
- Creating serializers
- Mentioning "endpoint", "API", "view", "route"
- Writing DRF classes (APIView, ViewSet, Serializer)
- Creating URL patterns for APIs
- Discussing authentication or permissions
## Security Requirements (MANDATORY)
Every API endpoint MUST have:
### 1. Permission Classes (REQUIRED)
```python
from rest_framework import viewsets
from rest_framework.permissions import IsAuthenticated
class UserViewSet(viewsets.ModelViewSet):
permission_classes = [IsAuthenticated] # ✅ REQUIRED
# ...
```
### 2. Serializer Validation (REQUIRED)
```python
from rest_framework import serializers
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ['id', 'email', 'first_name']
# NO sensitive fields exposed ✅
def validate_email(self, value):
# Custom validation ✅
if not value.endswith('@company.com'):
raise serializers.ValidationError("Must use company email")
return value
```
…Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/security-first-validator@sha256:670f9e285dfcd944The line at the top of this page pins the label git:20260215.92455aa, 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_gdj7qfu55e5yv6pe)
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Versions
The registry has recorded 1 version of this file, committed on Feb 15, 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 (11704 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
smicolon/ai-kit · 7 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gdj7qfu55e5yv6pe GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/security-first-validator GET https://markdownregistry.com/api/v1/blob/670f9e285dfcd944e66fbbb8d8bef1d6231742ad2bd05a71a4b362646cb8bb8f
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