fivetaku/fablize
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A Claude Code plugin that makes Opus behave like Fable — completion, evidence, and verification enforced as procedure. Ships only what a Fable-vs-Opus comparison proved transferable.
About
A Claude Code plugin that makes Opus (or any Claude model) see a task through to the end — with evidence and verification — as procedure, not as luck.
When Fable 5 shipped, I ran a controlled comparison of Fable 5 and Opus 4.8 (an A/B set of 19 runs plus 26 real working sessions, 1,500 tool calls). The finding:
fablize applies only the procedures whose effect was verified. It does not raise the model's ceiling; it makes the model reach its own ceiling.
The non-transferable rows are the model's job (or a human's), not a harness's. When you hit them, fablize tells you to escalate instead of pretending.
Negligible or unverified ideas (style mimicry, broad reasoning injection, a…
Excerpted from github.com/fivetaku/fablize
Latest metrics
| Stars | 895 | 2026-09-12 |
|---|---|---|
| Forks | 126 | 2026-09-12 |
| Commits | 13 | 2026-09-12 |
| Releases | 1 | 2026-09-12 |
| Watchers | 1 | 2026-09-12 |
| Open issues | 4 | 2026-09-12 |
| Open PRs | 6 | 2026-09-12 |