rails-concern

Creates Rails concerns for shared behavior across models or controllers with TDD. Use when extracting shared code, creating reusable modules, DRYing up models/controllers, or when user mentions concerns, modules, mixins, or shared behavior.

Install with Tessl CLI

npx tessl i github:ThibautBaissac/rails_ai_agents --skill rails-concern

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Review — 88%

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Evaluation — 96%

Agent success when using this skill

Validation — 10 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

88%

Public API Identifier Module

Model concern TDD workflow

Criteria

Without context

With context

Spec file created first

100%

Spec uses test class pattern

50%

Concern file location

100%

ActiveSupport::Concern usage

100%

included block for callbacks/validations

100%

Instance methods placement

100%

Single responsibility

100%

Descriptive module name

100%

RED step documented

57%

71%

GREEN step documented

57%

71%

Without context: $0.2230 · 49s · 12 turns · 12 in / 2,951 out tokens

With context: $0.5033 · 1m 19s · 26 turns · 337 in / 4,549 out tokens

100%

Order and Product Archiving

Concern structure and placement

Criteria

Without context

With context

Concern file location

100%

ActiveSupport::Concern

100%

included block for scopes

100%

included block for callbacks

100%

class_methods block used

100%

Instance methods placement

100%

Single responsibility

100%

Descriptive module name

100%

Spec file location

100%

Spec tests via including model

100%

Model includes concern

100%

Without context: $0.2533 · 49s · 13 turns · 14 in / 3,139 out tokens

With context: $0.3632 · 1m 9s · 17 turns · 17 in / 3,848 out tokens

100%

10%

Multi-Language API Support

Controller concern with request specs

Criteria

Without context

With context

Controller concern location

100%

ActiveSupport::Concern

100%

included block for before_action

100%

class_methods block used

100%

Instance methods placement

100%

Request spec location

100%

Request spec type

100%

Single responsibility

100%

Descriptive module name

100%

Controller includes concern

100%

Without context: $0.2373 · 54s · 11 turns · 12 in / 3,297 out tokens

With context: $0.5935 · 1m 52s · 25 turns · 24 in / 6,994 out tokens

Evaluated: about 6 hours ago
Agent: Claude Code

Table of Contents

Public API Identifier Module Order and Product Archiving Multi-Language API Support

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