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/cseguinlz/doubletick-cli/clawhubnpx skills add cseguinlz/doubletick-cli --skill clawhubgit clone --depth 1 https://github.com/cseguinlz/doubletick-cliWrote 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/cseguinlz/doubletick-cli/clawhub)<a href="https://agentmods.dev/skills/cseguinlz/doubletick-cli/clawhub"><img src="https://agentmods.dev/badge/skills/cseguinlz/doubletick-cli/clawhub.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 | $0.00015 | $0.00461 |
| Opus 5 | $0.00008 | $0.00230 |
| Sonnet 5 | $0.00003 | $0.00092 |
| Haiku 4.5 | $0.00002 | $0.00046 |
Grade A, and why
doubletick 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 5d 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
DoubleTick
Send tracked emails via Gmail and check if they were opened.
Setup
- Install and log in (one-time):
npx doubletick-cli login
- Add to your MCP config:
{
"mcpServers": {
"doubletick": {
"command": "npx",
"args": ["-y", "doubletick-cli"]
}
}
}
What it does
DoubleTick injects a 1x1 tracking pixel into emails sent via the Gmail API. When the recipient opens the email, the pixel fires and the open is logged. You can then check the status to see if and when it was read.
Tools
- send_tracked_email — Send an email with read tracking. Body accepts markdown (auto-converted to HTML).
- check_tracking_status — Check if a tracked email has been opened, with open count, device, and timing.
- list_tracked_emails — List recent tracked emails with open rates and stats.
Examples
Send a tracked email to [email protected] with subject "Q1 Planning" and body "Hi Jane, here are the numbers for Q1..."
Check if my last tracked email was opened
Show my tracked emails dashboard
Requirements
- Node.js 18+
- A Gmail account
- A DoubleTick account (free tier: 5 tracked emails/week)
Links
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.
- 5d ago First seen · 79 lines · 15 tokens per session scan A fcc2c7a89bb4
doubletick is a skill published in the GitHub repository cseguinlz/doubletick-cli (2 stars, last pushed 5mo ago), licensed MIT. It adds 15 tokens to every session and 461 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 2026-08-31.
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