json-serialization SKILL.md skillA
json-serialization 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/json-serialization@v1.0.0Pins v1.0.0 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/flutter/skills/json-serialization/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Sep 3, 2026
- Size
- 1,912 bytes
- Repository stars
- 7
- License
- MIT
Standardizes JSON serialization and deserialization in Flutter and Dart using dart:convert, manual factory constructors, or code-generation with freezed.
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
# JSON Serialization in Flutter
Best practices for mapping API JSON payloads to Dart models safely.
## 1. Immutable Model Pattern (No Code-Gen)
Ideal for simple to medium entities without heavy dependencies:
```dart
class UserModel {
final String id;
final String email;
final String? displayName;
final DateTime createdAt;
const UserModel({
required this.id,
required this.email,
this.displayName,
required this.createdAt,
});
factory UserModel.fromJson(Map<String, dynamic> json) {
return UserModel(
id: json['id'] as String,
email: json['email'] as String,
displayName: json['display_name'] as String?,
createdAt: DateTime.parse(json['created_at'] as String),
);
}
Map<String, dynamic> toJson() {
return {
'id': id,
'email': email,
if (displayName != null) 'display_name': displayName,
'created_at': createdAt.toIso8601String(),
};
}
UserModel copyWith({
String? id,
String? email,
String? displayName,
DateTime? createdAt,
}) {
return UserModel(
id: id ?? this.id,
email: email ?? this.email,
displayName: displayName ?? this.displayName,
…Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/json-serialization@sha256:7cd25d1cae18d029The line at the top of this page pins the label v1.0.0, 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_bbmknllbe4y4m52h)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 3, 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 (1912 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_bbmknllbe4y4m52h GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/json-serialization GET https://markdownregistry.com/api/v1/blob/7cd25d1cae18d029ae20b852f2a762910baa33caee3f02a00be0adbd81bbd8b8
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.