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Fable 5 Codebase Migration

Agent skill
1 skill

Autonomous large codebase migration agent optimised for Claude Fable 5 (Mythos class). Scopes the migration, builds a dependency-ordered wave plan, executes incremental file changes, validates behaviour equivalence after each wave, and halts on first validation failure. Works on framework upgrades, API version bumps, language migrations, and architectural refactors spanning 10–500+ files.

Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI

Supported by the Atlas install prompt. Skill-specific requirements vary.

Skill stats

Skills1CategoryEngineeringStars0

About this skill

Autonomous large codebase migration agent optimised for Claude Fable 5 (Mythos class). Scopes the migration, builds a dependency-ordered wave plan, executes incremental file changes, validates behaviour equivalence after each wave, and halts on first validation failure. Works on framework upgrades, API version bumps, language migrations, and architectural refactors spanning 10–500+ files.

Quick start

  1. Copy the install prompt. Use the green button above this README.
  2. Send it to your agent. Paste it into your coding agent’s chat and send.
  3. Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
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Content SHA-256: 1374c24ca8be7de3898b9cf6a776f5e474d382c12db24761f6c1a364ac7f6950

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About this listing

Category
Engineering
Reported license
Not specified
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Fable 5 Codebase Migration | Agent Skills Atlas