fable-new-issue-loop

fable-new-issue-loop is a skill for Claude Code from richkuo/rk-skills. It costs 134 tokens per session (760 once invoked), scanned A, original, MIT.

A workflow that asks Fable 5 to draft a GitHub issue, files it, validates it, and drives the work through to a reviewed pull request.

In plain words
What is it for?
Use it when you want a new feature or fix written as a complete issue and carried through to a reviewed pull request. It also checks for an existing issue or pull request to avoid duplicates.
Why use it?
It turns a request into a tracked GitHub task and continues through planning, implementation, and review without requiring separate manual handoffs.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md; mentions subagents; mentions AGENTS.md.

Part of the rk-skills plugin — 37 skills, 1 command shipped together

Good fit Use it when you want a new feature or fix written as a complete issue and carried through to a reviewed pull request. It also checks for an existing issue or pull request to avoid duplicates.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/richkuo/rk-skills/fable-new-issue-loop
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add richkuo/rk-skills --skill fable-new-issue-loop
Clone the repo
git clone --depth 1 https://github.com/richkuo/rk-skills

Made for: Claude Code.

Or install rk-skills, the plugin that ships this one along with the rest of its 37 skills, 1 command.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fable-new-issue-loop

README.md
[![agentmods](https://agentmods.dev/badge/skills/richkuo/rk-skills/fable-new-issue-loop/github.svg)](https://agentmods.dev/skills/richkuo/rk-skills/fable-new-issue-loop)
Your own site
<a href="https://agentmods.dev/skills/richkuo/rk-skills/fable-new-issue-loop"><img src="https://agentmods.dev/badge/skills/richkuo/rk-skills/fable-new-issue-loop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fable-new-issue-loop

Your own site · 80×15
<a href="https://agentmods.dev/skills/richkuo/rk-skills/fable-new-issue-loop"><img src="https://agentmods.dev/badge/skills/richkuo/rk-skills/fable-new-issue-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 134 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 760 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00134 $0.00760
Opus 5 $0.00067 $0.00380
Sonnet 5 $0.00027 $0.00152
Haiku 4.5 $0.00013 $0.00076

Measured 5d ago against content hash b806f94fc039, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

fable-new-issue-loop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/fable-new-issue-loop/SKILL.md · 26 lines

How it starts

The opening of the file, as written. The whole thing — 26 lines — stays where its author put it; the contents beside it link to each section on GitHub.

fable-new-issue-loop

Chain fable-new-issue → validate-issue-loop into one autonomous run: a Fable 5.1 subagent drafts the issue, the main agent files it, and the loop drives it to a reviewed PR without a human in between.

This skill is new-issue-loop with a different front of the chain. Follow the new-issue-loop skill for the full procedure: the complete-issue rule, the input contract, the stop gate, the handoff to validate-issue-loop (explicit issue reference, owner/repo#N when filed cross-repo), the report format, and the Red Flags. Apply only the deltas below.

Deltas from new-issue-loop

  • Step 1, front of the chain. Invoke the fable-new-issue skill (Skill tool, skill: fable-new-issue) in place of new-issue. Let it run its full process (Fable 5.1 subagent draft, duplicate gate, spot-check, filing) and capture the created issue number from its report.
  • Step 2, stop gate. new-issue-loop's stop gate applies with one extra row for the Fable draft; the effective table:
Condition Action
fable-new-issue found an existing open issue/PR already covering it (no issue filed) STOP. Report the duplicate and the offer to update/comment instead — merging scopes is a human call.
The conversation held several distinct candidates If one clearly converged, file it and continue the chain with it; the unfiled candidates go in the final report. If none clearly converged, STOP — report the candidates and ask which to file. Never bundle, never auto-file the extras.
fable-new-issue split the work and named unfiled follow-ups Continue with the core issue only; relay the unfiled follow-ups in the final report.
The draft was structurally wrong and fable-new-issue paused for a human decision STOP. Relay what is off. Do not file or re-dispatch on your own.
  • Step 3, why validation still runs. Validating an issue this chain just filed stays useful: validate-issue re-traces the claims against the code independently and catches anything the Fable draft or the spot-check got wrong.
  • Step 4, report. Mark the issue line as drafted by Fable 5.1. Cap the whole report at 55 words, plain simple English in ASD-STE100 — apply the Response Style rules in CLAUDE.md/AGENTS.md.
  • One extra Red Flag. Tempted to skip the Fable subagent and draft or file the issue yourself to go faster: never. The draft coming from Fable 5.1 is the point of this skill.

Read the full file on GitHub · 26 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago Changed · +4 tokens per session b806f94fc039
  2. 9d ago First seen · 26 lines · 130 tokens per session scan A 288ed1a7ed25

Subscribe to this mod's changes

fable-new-issue-loop is a skill published in the GitHub repository richkuo/rk-skills (49 stars, last pushed today), licensed MIT. It adds 134 tokens to every session and 760 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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