Borrowing it
Nothing to install: this file belongs to Othmane-Khadri/YALC-the-GTM-operating-system. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Othmane-Khadri/YALC-the-GTM-operating-system/main/.claude/skills/send-cold-email/SKILL.mdgit clone --depth 1 https://github.com/Othmane-Khadri/YALC-the-GTM-operating-systemWrote 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/othmane-khadri/yalc-the-gtm-operating-system/send-cold-email)<a href="https://agentmods.dev/skills/othmane-khadri/yalc-the-gtm-operating-system/send-cold-email"><img src="https://agentmods.dev/badge/skills/othmane-khadri/yalc-the-gtm-operating-system/send-cold-email/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/othmane-khadri/yalc-the-gtm-operating-system/send-cold-email"><img src="https://agentmods.dev/badge/skills/othmane-khadri/yalc-the-gtm-operating-system/send-cold-email.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 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 MCP Rug Pull · line 36 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 48 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 | $0.00087 | $0.00529 |
| Opus 5 | $0.00044 | $0.00264 |
| Sonnet 5 | $0.00017 | $0.00106 |
| Haiku 4.5 | $0.00009 | $0.00053 |
Grade A, and why
send-cold-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 12d 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
Send Cold Email
I'll wrap two CLIs — email:create-sequence (drafts the sequence) and email:send (fires it). Both side-effecting → both shell-out.
When This Skill Applies
- "send a cold email to this list"
- "fire the email sequence"
- "launch the email campaign"
- "send the drip sequence"
- "email these qualified leads"
NOT this skill (use launch-linkedin-campaign instead):
- "launch a LinkedIn campaign" — that's the connect+DM flow on LinkedIn.
NOT this skill (use personalize-message instead):
- "personalize a single email" — single per-lead variant, not bulk send.
Workflow
Step 0 — Ask for inputs
"Which result set, what subject + intro, how many touches?"
Step 1 — Validate (result set exists, intro non-empty)
Step 2 — Shell out to email:create-sequence
npx tsx src/cli/index.ts email:create-sequence --result-set <id> --subject "<subject>" --intro "<intro>"
(Verify exact flags via --help.)
Step 3 — Render the drafted sequence + ask for approval
"Drafted N messages across M touches. Send? (yes / preview only / cancel)"
Step 4 — On yes, shell out to email:send
npx tsx src/cli/index.ts email:send --sequence-id <id>
Step 5 — Render send result + offer follow-ups
"Want me to (a) track replies via
track-campaigns, (b) personalize follow-ups for hot replies?"
Notes
- Requires
INSTANTLY_API_KEY(or whatever email provider is configured). - Default cadence: day 0, day 3, day 7, day 14.
- The CLI enforces sending limits per the user's email accounts (Instantly handles deliverability).
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.
- 12d ago First seen · 60 lines · 87 tokens per session scan A 7b022d20ef18
send-cold-email is a skill published in the GitHub repository Othmane-Khadri/YALC-the-GTM-operating-system (301 stars, last pushed 22d ago), licensed MIT. It adds 87 tokens to every session and 529 once invoked, about $0.0004 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
cn-check
Install and run the Continue CLI (cn) to execute AI agent checks on local code changes. Use when asked to "run checks", "lint with AI", "review my changes with cn", or set up Continue CI locally.
kn-handoff
Use when a feature crosses repository boundaries and one side must hand work to the other - generates a self-contained frontend-to-backend brief or backend-to-frontend API contract.
kn-spec
Use when creating a specification document for a feature (SDD workflow).
kn-flow
Use when orchestrating a full Knowns spec or task wave through planning, implementation, review, integration, and verification, optionally using sub-agents when scopes are parallel-safe.
kn-debug
Use when debugging errors, test failures, build issues, or blocked tasks — structured triage to fix to learn.
kn-research
Use when you need to understand existing code, find patterns, search project knowledge, investigate current external facts, or explore a large codebase before implementation.