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 agentmods add skills/bs779517/story-skills/plot-structurenpx skills add bs779517/story-skills --skill plot-structuregit clone --depth 1 https://github.com/bs779517/story-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/bs779517/story-skills/plot-structure)<a href="https://agentmods.dev/skills/bs779517/story-skills/plot-structure"><img src="https://agentmods.dev/badge/skills/bs779517/story-skills/plot-structure.svg" alt="Measured on agentmods" 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 | $0.00070 | $0.00810 |
| Opus 5 | $0.00035 | $0.00405 |
| Sonnet 5 | $0.00014 | $0.00162 |
| Haiku 4.5 | $0.00007 | $0.00081 |
Grade A, and why
plot-structure 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Plot Structure
Overview
Plan and manage story arcs, plot points, foreshadowing, and narrative timeline. Each arc is a markdown file in plot/arcs/ with a chronological timeline maintained in plot/timeline.md. The plot index tracks all arcs, their status, and theme coverage.
Prerequisites
A story project must already exist (created via the story-init skill). Verify by checking for story.md in the project root.
Choosing a Story Structure
- Read
story.mdfor genre and themes - Consult
references/structure-models.mdfor available structures - Recommend a structure based on genre (default to three-act if unclear)
- Update
plot/_index.mdfrontmatterstructurefield - Populate the story structure section with the beat sheet
Creating an Arc
- Read
story.mdfor themes - Read
plot/_index.mdfor existing arcs - Read
characters/_index.mdto understand available characters - Ask for:
- Arc name
- Type (main, subplot, character, thematic)
- Which characters are involved
- Which themes it serves
- Build the arc through conversation: setup, escalations, climax, resolution
- Write the file using
references/arc-template.md - Save to
plot/arcs/{arc-name-kebab}.md - Update
plot/_index.mdarcs table - Update theme tracking in
plot/_index.md - If characters are referenced, verify they exist in
characters/
Managing Plot Points
Plot points live within arc files in the "Plot Points" table. When adding a plot point:
- Read the relevant arc file
- Add the plot point to the table with chapter reference (if known)
- Add the event to
plot/timeline.mdin chronological order - If the plot point involves foreshadowing, add it to the arc's foreshadowing table
Timeline Management
The timeline at plot/timeline.md is a chronological master list of all story events across all arcs.
When adding events:
- Insert in chronological order
- Link to the relevant arc and chapter
- Keep entries concise (one line per event)
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 6d ago First seen · 86 lines · 70 tokens per session scan A 158a1e955ee9
plot-structure is a skill published in the GitHub repository bs779517/story-skills (8 stars, last pushed yesterday), licensed MIT. It adds 70 tokens to every session and 810 once invoked, about $0.0003 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 2026-08-31.
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