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.
npx skills add kpab/claude-fable-5-skills --skill regrounding-summarygit clone --depth 1 https://github.com/kpab/claude-fable-5-skillsWrote 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.
[](https://agentmods.dev/skills/kpab/claude-fable-5-skills/regrounding-summary)<a href="https://agentmods.dev/skills/kpab/claude-fable-5-skills/regrounding-summary"><img src="https://agentmods.dev/badge/skills/kpab/claude-fable-5-skills/regrounding-summary/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.
<a href="https://agentmods.dev/skills/kpab/claude-fable-5-skills/regrounding-summary"><img src="https://agentmods.dev/badge/skills/kpab/claude-fable-5-skills/regrounding-summary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00092 | $0.00522 |
| Opus 5 | $0.00046 | $0.00261 |
| Sonnet 5 | $0.00018 | $0.00104 |
| Haiku 4.5 | $0.00009 | $0.00052 |
Grade A, and why
regrounding-summary 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 7d 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.
What it actually says
Re-grounding Summary
During a long run the model builds private vocabulary — abbreviations, arrow chains, names for intermediate artifacts. Efficient while working; opaque in a final report. The reader is seeing everything for the first time, so the summary must be a re-grounding, not a continuation of the working thread.
Rules for the final message
- Open with the outcome: one sentence answering "what happened?" or "what did you find?" — the TL;DR the reader would ask for. Detail follows, never leads.
- Complete sentences. No arrow chains (A → B → fails), no hyphen-stacked compound labels, no abbreviations you coined mid-run. If a term you built up is worth keeping, reintroduce it as if new.
- Never reference your own working notes or reasoning as if the reader saw them ("as established above" pointing at tool transcripts).
- Identifiers — files, commits, flags, endpoints — each get their own plain-language clause: what it is, why it matters here.
- Selectivity over compression: shorten by dropping details that wouldn't change the reader's next action, not by squeezing grammar out of the sentences. Readable beats short.
- Short sentences, short paragraphs. When a literal phrase exists, use it; a metaphor or flourish standing in for a direct statement is noise to remove.
- When you reuse a source's wording, mark it as a quotation. Everything else in your own words.
- Close with the one or two things needed from the reader, if any.
Shape
- Outcome (1 sentence)
- What was done / found, in reader-facing language
- Failures, skips, open questions — stated plainly
- What's needed from you: ...
Before the final message
Open the task with one line saying what you're about to do, and keep short updates flowing while you work, so the recap isn't the reader's first contact with the task. Working shorthand between tool calls is otherwise fine — that's thinking out loud. This skill's rules apply the moment you address the human.
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.
- 7d ago Changed · +4 lines · +17 tokens per session eff7b1dc0d67
- 12d ago First seen · 27 lines · 75 tokens per session scan A fc3fa0fe2687
regrounding-summary is a skill published in the GitHub repository kpab/claude-fable-5-skills (17 stars, last pushed 9d ago), licensed MIT. It adds 92 tokens to every session and 522 once invoked, about $0.0005 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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