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 cosmicstack-labs/mercury-agent-skills --skill github-repo-tourgit clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-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/cosmicstack-labs/mercury-agent-skills/github-repo-tour)<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/github-repo-tour"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/github-repo-tour/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/cosmicstack-labs/mercury-agent-skills/github-repo-tour"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/github-repo-tour.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 11 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 23 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 601 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Data Exfiltration · line 115 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 115 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium MCP Rug Pull · line 419 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 422 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 425 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 428 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 434 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 570 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 594 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00066 | $0.05453 |
| Opus 5 | $0.00033 | $0.02727 |
| Sonnet 5 | $0.00013 | $0.01091 |
| Haiku 4.5 | $0.00007 | $0.00545 |
Grade A, and why
github-repo-tour scanned grade A with 1 finding 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s -X POST "https://api.elevenlabs.io/v1/text-to-speech/AZnzlk1XvdvUeBnXmlld" \ How it starts
The opening of the file, as written. The whole thing — 603 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Repo Tour — Scrolling Video with Synced Narration & Subtitles
Depends on: website-to-hyperframes — load it before starting. Its 6-step workflow and reference files apply here. This skill specializes that workflow for single-page scrolling tours with narration and visible subtitles.
What This Skill Produces
A 1080x1920 portrait video (Instagram Reels format) that:
- Shows a GitHub repository page — full-page mobile screenshot, scrolling smoothly from top to bottom over 15–30 seconds.
- Narrates the tour — ElevenLabs AI voice describing what's on screen, synced to the scroll position.
- Burns subtitles on screen — word-by-word caption overlay that highlights each word as the narrator speaks it. The viewer reads along while listening.
- Ends with a CTA — "Star on GitHub" or "Follow for more" call to action.
Core Decisions
| Decision | Value | Why |
|---|---|---|
| Dimensions | 1080x1920 | Instagram Reels primary format |
| Duration | 15–30 seconds | Sweet spot for Shorts/Reels engagement |
| Narration | Drives timing | Scroll speed, beat durations, and subtitle timing all derive from the audio |
| Subtitles | Word-by-word highlight | Each word lights up as the narrator says it — Karaoke-style captions |
| Phone viewport | Full-screen scroll, no bezel | The GitHub page fills the entire 1080x1920 canvas |
| Output folder | github-promos/<repo>-tour/ |
Sibling to github-repo-promo projects |
Directory Structure
github-promos/
<repo>-tour/
index.html ← main HyperFrames composition
package.json ← from hyperframes init
hyperframes.config.json ← HyperFrames config
SCRIPT.md ← narration script with timestamps
assets/
repo-page.png ← Full-page GitHub screenshot (dark mode, mobile viewport)
narration.mp3 ← ElevenLabs voiceover
renders/ ← generated MP4s
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.
- 8d ago First seen · 603 lines · 66 tokens per session scan A 11279608e649
github-repo-tour is a skill published in the GitHub repository cosmicstack-labs/mercury-agent-skills (471 stars, last pushed 17d ago), licensed MIT. It adds 66 tokens to every session and 5,453 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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