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 sfc-gh-dflippo/snowflake-dbt-demo --skill skills-syncgit clone --depth 1 https://github.com/sfc-gh-dflippo/snowflake-dbt-demoWrote 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/sfc-gh-dflippo/snowflake-dbt-demo/skills-sync)<a href="https://agentmods.dev/skills/sfc-gh-dflippo/snowflake-dbt-demo/skills-sync"><img src="https://agentmods.dev/badge/skills/sfc-gh-dflippo/snowflake-dbt-demo/skills-sync/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/sfc-gh-dflippo/snowflake-dbt-demo/skills-sync"><img src="https://agentmods.dev/badge/skills/sfc-gh-dflippo/snowflake-dbt-demo/skills-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, 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 57 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.
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 | $0.00053 | $0.00748 |
| Opus 5 | $0.00026 | $0.00374 |
| Sonnet 5 | $0.00011 | $0.00150 |
| Haiku 4.5 | $0.00005 | $0.00075 |
Grade A, and why
skills-sync 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 11d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skills Sync
Overview
Synchronizes AI agent skills from local directories and Git repositories, generating
.cursor/rules/skills.mdc for Cursor IDE integration.
Usage
First time setup (installs uv if needed, then installs skills-sync as a tool):
python3 .claude/skills/skills-sync/scripts/skills_sync.py
Subsequent runs:
skills-sync
The script auto-detects the project root by walking up the directory tree.
Skill Locations (Precedence Order)
| Priority | Location | Type |
|---|---|---|
| 1 (highest) | $PROJECT/.cortex/skills/ |
Project |
| 2 | $PROJECT/.claude/skills/ |
Project |
| 3 | ~/.snowflake/cortex/skills/ |
Global |
| 4 (lowest) | ~/.claude/skills/ |
Global |
Higher precedence locations override skills with the same name from lower locations.
Repository Configuration
Place repos.txt in any skill directory to sync skills from Git repositories:
https://github.com/anthropics/skills
https://github.com/your-org/your-skills-repo
# Comments start with #
The script checks all four skill locations for repos.txt files and deduplicates URLs.
Repository Skill Extraction
Skills are extracted ONLY from .cortex/skills/*/SKILL.md and .claude/skills/*/SKILL.md paths
within repositories. Extracted skills are placed in ~/.snowflake/cortex/skills/ with a repo prefix
(e.g., skills-dbt-core/).
Managing Repositories
Add Repository: Add URL to repos.txt, run skills-sync
Remove Repository: Delete URL from repos.txt, run skills-sync, optionally delete extracted
skills from ~/.snowflake/cortex/skills/<repo>-<skill>/
Output
The script generates .cursor/rules/skills.mdc containing <available_skills> XML that Cursor
loads automatically for all AI interactions.
Sync Process
- Read
repos.txtfrom all locations, deduplicate URLs - Clone/update repositories to
~/.snowflake/.cache/repos/ - Extract skills to
~/.snowflake/cortex/skills/with repo prefix - Scan all four skill locations with precedence rules
- Validate skills using Agent Skills CLI
- Generate
.cursor/rules/skills.mdcwith embedded XML - Clean up old marker-delimited sections from
AGENTS.md
What ships with it
3 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.
- 11d ago First seen · 103 lines · 53 tokens per session scan A 3c6d008a2747
skills-sync is a skill published in the GitHub repository sfc-gh-dflippo/snowflake-dbt-demo (33 stars, last pushed 2d ago), licensed Apache-2.0. It adds 53 tokens to every session and 748 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 2026-08-30.
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