Gitmesayan

Fable5 Push Skill — Development skill for Claude Code

Development community

Its a skill which mostly based on anthropics's Claude fable 5.

How to install Fable5 Push Skill

This entry records only its repository, not the path inside it, so there is no exact command to give. Open Gitmesayan/Fable5-push-skill and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Fable5 Push Skill does

Its a skill which mostly based on anthropics's Claude fable 5.

Alternatives in Development

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Devteam — Run a team of local coding agents in your terminal 264 ★

README

FABLE-5 ULTRA

**Any agent. Any model. Ships like a 20-year engineering org.**

A portable elite-output protocol for **any agentic AI or coding agent** — Claude Code, OpenAI Codex CLI, Cursor, Windsurf, Cline, Roo Code, Amp, GitHub Copilot, JetBrains Junie, Aider, OpenHands, Devin, or any chat API — tuned to the verified behavior of **Claude Fable 5** (Anthropic's Mythos-class model, June 2026) and degrading gracefully on every other model.

The pipeline

For any `fable`-tagged task the agent runs:

0 INTAKE → 1 ARCHITECT → 2 PLAN → 3 BUILD → 4 COUNCIL → 5 RED TEAM → 6 VERIFY → 7 SHIP

Spec-locked — testable success criteria, binding non-goals, exact acceptance commands
8-role council — architect, security, performance, QA, reliability, data, reviewer, docs; findings as [ROLE] P0/P1/P2: … (file:line)
Red team before ship — 5 production-death questions, defensive framing
Rule of evidence — nothing claimed as passing without execution; [UNVERIFIED] tags; the Verdict Block names the model and harness that did the work
Caveman mode — 70–90% token compression (caveman / caveman off)
ULTRATHINK — highest effort + explicit self-validation (ultrathink)
Harness-aware — detects full-agentic (H1) / IDE-approval (H2) / chat-only (H3) and degrades the pipeline honestly instead of faking evidence

Repo layout

fable5-ultra/
├── .claude-plugin/
│   └── plugin.json                 ← Claude Code plugin manifest
├── .cursor/rules/
│   └── fable5-ultra.mdc            ← Cursor project rule (alwaysApply)
├── CLAUDE.md                       ← always-on core for Claude Code
├── CURSOR.md                       ← always-on core for Cursor
├── EXAMPLES.md                     ← worked examples + common mistakes
├── README.md                       ← this file
├── README.zh.md                    ← 中文说明
└── skills/
    └── fable5-ultra/               ← the full skill (canonical)
        ├── SKILL.md                ←