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/open-gitagent/gitagent/gmail-emailnpx skills add open-gitagent/gitagent --skill gmail-emailgit clone --depth 1 https://github.com/open-gitagent/gitagentWhat 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 | $0.00013 | $0.00241 |
| Opus 5 | $0.00006 | $0.00120 |
| Sonnet 5 | $0.00003 | $0.00048 |
| Haiku 4.5 | $0.00001 | $0.00024 |
Grade A, and why
gmail-email 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 2d 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
Gmail Email Skill
Send emails via Gmail SMTP.
Setup
-
Enable 2-Factor Authentication on your Gmail account
-
Generate App Password:
- Go to https://myaccount.google.com/apppasswords
- Sign in to your Google account
- Select "Mail" and your device
- Generate password and save it
-
Configure credentials:
export GMAIL_USER="[email protected]" export GMAIL_APP_PASSWORD="your-16-char-app-password"Or create a
.envfile in the skill directory:[email protected] GMAIL_APP_PASSWORD=your-16-char-app-password
Usage
python3 scripts/send_email.py \
--to "[email protected]" \
--subject "Subject line" \
--body "Email body text"
Requirements
- Python 3.6+
- No additional packages needed (uses stdlib smtplib)
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.
- 2d ago First seen · 44 lines · 13 tokens per session scan A 50787164df92
gmail-email is a skill published in the GitHub repository open-gitagent/gitagent (661 stars, last pushed 12d ago), licensed MIT. It adds 13 tokens to every session and 241 once invoked, about $0.0001 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.
Other skills, from other repositories
cron
Schedule reminders and recurring tasks.
tmux
Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.
skill-creator
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
weather
Get current weather and forecasts (no API key required).
github
Interact with GitHub using the gh CLI. Use gh issue, gh pr, gh run, and gh api for issues, PRs, CI runs, and advanced queries.
summarize
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).