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 bitovi/cascade-mcp --skill write-shell-storiesgit clone --depth 1 https://github.com/bitovi/cascade-mcpWrote 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/bitovi/cascade-mcp/write-shell-stories)<a href="https://agentmods.dev/skills/bitovi/cascade-mcp/write-shell-stories"><img src="https://agentmods.dev/badge/skills/bitovi/cascade-mcp/write-shell-stories/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/bitovi/cascade-mcp/write-shell-stories"><img src="https://agentmods.dev/badge/skills/bitovi/cascade-mcp/write-shell-stories.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 | $0.00094 | $0.02462 |
| Opus 5.5 | $0.00038 | $0.00985 |
| Sonnet 5.5 | $0.00019 | $0.00492 |
| Haiku 4.5 | $0.00009 | $0.00246 |
Grade B, and why
write-shell-stories scanned grade B with 2 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 1mo 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
curl -sL "{downloadUrl}" -o /tmp/cascade-figma.zip && unzip -qo /tmp/cascade-figma.zip -d .temp/cascade/figma/ && rm /tmp/cascade-figma.zip Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -sL "{downloadUrl}" -o /tmp/cascade-figma.zip && unzip -qo /tmp/cascade-figma.zip -d .temp/cascade/figma/ && rm /tmp/cascade-figma.zip How it starts
The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Write Shell Stories
Generate or refresh the ## Shell Stories section of a Jira epic using comprehensive context from all linked sources (Figma, Confluence, Google Docs) and a scope analysis pass.
When to Use
Use when the user wants to:
- Generate the initial set of shell stories for an epic from its Figma designs and specs
- Refresh shell stories after new designs or scope changes
- Re-run to regenerate shell stories after questions have been answered (❓ → 💬 flipping in scope analysis)
Typical triggers:
- "Write shell stories for PROJ-123"
- "Generate shell stories for this epic"
- "Refresh the shell stories for PROJ-123 — we have new designs"
Required Input
- Jira epic key (e.g.,
PROJ-123) — the epic to write shell stories for
Procedure
Phase 1: Fetch the Epic
Call MCP tool extract-linked-resources with the Jira epic URL (e.g., https://myco.atlassian.net/browse/PROJ-123).
Save the returned markdown+frontmatter directly to .temp/cascade/context/jira-PROJ-123.md.
Parse discoveredLinks from frontmatter to build .temp/cascade/context/to-load.md.
Phase 2: Iterative Content Loading
For each non-Figma URL in to-load.md (prioritize parent and blocks relationships first):
- Call
extract-linked-resourceswith the URL - Save the returned markdown to
.temp/cascade/context/{type}-{identifier}.md - Parse
discoveredLinksfrom frontmatter — add any new URLs toto-load.md - Repeat until no unloaded non-Figma URLs remain
Important: Figma URLs are collected but NOT loaded here — they go in the ## Figma section of to-load.md for Phase 3.
Phase 3: Figma Batch Load
For each Figma URL collected:
- Call MCP tool
figma-batch-zipwith the Figma file URL- This returns a
downloadUrlandmanifest
- This returns a
- Try to download and extract:
curl -sL "{downloadUrl}" -o /tmp/cascade-figma.zip && unzip -qo /tmp/cascade-figma.zip -d .temp/cascade/figma/ && rm /tmp/cascade-figma.zip - If curl succeeds, the extracted data is at:
→ Proceed to Phase 4 (filesystem path)..temp/cascade/figma/{fileKey}/ ├── manifest.json ← frame list with metadata ├── prompts/ │ └── frame-analysis.md ← analysis prompt for frames └── frames/ ├── {nodeId}-{name}/ │ ├── image.png │ ├── structure.xml │ └── context.md └── ...
What ships with it
1 file 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.
- 1mo ago First seen · 176 lines · 94 tokens per session scan B 9d83a63218bc
write-shell-stories is a skill published in the GitHub repository bitovi/cascade-mcp (24 stars, last pushed 2mo ago), licensed MIT. It adds 94 tokens to every session and 2,462 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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