What is oh-my-fable?
oh-my-fable is a Claude Code mod by Junhan2 that anthropic's prompting-guide rules for Claude Code, always on (Opus 5.5, Fable 5.1; Sonnet 5.5, Haiku 5.5, Opus 5 and Sonnet 5 too): install and forget: the working rules load at every. It is listed under Security and has 58 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | Junhan2 |
| Repository | Junhan2/oh-my-fable |
| Popularity | 58 GitHub stars |
| Category | Security |
| Security | Low risk (100/100) |
| Rank | #231 of 5,272 Claude Code mods; #39 in Security |
| License | MIT |
| Last commit | 2026-10-10 |
| Hooks | 1 events |
| Sees | only the events it hooks |
| Draws on | AssistantMessage |
Is oh-my-fable safe to install?
oh-my-fable scores 100/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 8 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.ui.resolve | draws interface |
How do I install oh-my-fable?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/Junhan2/oh-my-fable claude plugin validate ./oh-my-fable/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/Junhan2/oh-my-fable && claude --plugin-dir ./oh-my-fable/.
Or ask Claude to set it up
Paste this into Claude Code and it installs oh-my-fable for you:
Install the "oh-my-fable" Claude Code mod from https://github.com/Junhan2/oh-my-fable. Run claude plugin validate on it first and show me what it can access before you enable it.