YALC-the-GTM-operating-system: Skill for Claude Code

.claude/skills/personalize-message/SKILL.md

personalize-message is a skill for Claude Code from Othmane-Khadri/YALC-the-GTM-operating-system. It costs 105 tokens per session (1,313 once invoked), scanned A, original, MIT.

A tool for adapting one outbound LinkedIn message or cold email to a specific person by using that person’s profile, company, and recent signals. It produces the message for review rather than sending it.

In plain words
What is it for?
Use it to personalize a message for one lead, validate the template and lead details, generate a tailored version, and review the reasoning before sending.
Why use it?
It removes the need to rewrite the same template manually while keeping the message relevant to the individual prospect.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is Othmane-Khadri/YALC-the-GTM-operating-system's own configuration. It tells Claude Code how to work on YALC-the-GTM-operating-system itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything YALC-the-GTM-operating-system configures →

Reuse

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.

Copy the file
curl -O https://raw.githubusercontent.com/Othmane-Khadri/YALC-the-GTM-operating-system/main/.claude/skills/personalize-message/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Othmane-Khadri/YALC-the-GTM-operating-system

Made for: Claude Code.

Wrote 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.

agentmods badge for personalize-message

README.md
[![agentmods](https://agentmods.dev/badge/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message/github.svg)](https://agentmods.dev/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message)
Your own site
<a href="https://agentmods.dev/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message"><img src="https://agentmods.dev/badge/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message/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.

agentmods 80×15 button for personalize-message

Your own site · 80×15
<a href="https://agentmods.dev/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message"><img src="https://agentmods.dev/badge/skills/othmane-khadri/yalc-the-gtm-operating-system/personalize-message.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 105 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,313 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to high

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 →

  • high Privilege Escalation · line 80
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Rogue Agent · line 3
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium MCP Rug Pull · line 34
    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 81
    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]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00105 $0.01313
Opus 5 $0.00053 $0.00656
Sonnet 5 $0.00021 $0.00263
Haiku 4.5 $0.00011 $0.00131

Measured 11d ago against content hash aa6274d1819d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

personalize-message 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.

.claude/skills/personalize-message/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Personalize Message

I'll wrap personalize. I'll ask for the template + target lead, validate inputs, run the CLI, and surface the personalized variant with reasoning so you can approve before sending.

When This Skill Applies

Use this skill when the user says:

  • "personalize this message"
  • "tailor this outreach to the prospect"
  • "rewrite this template for [name]"
  • "make this message more personal"
  • "generate a personal opener"

NOT this skill (use qualify-leads instead):

  • "score these leads" / "qualify these leads" — that runs the 7-gate pipeline, not per-lead copy generation.

NOT this skill (use launch-linkedin-campaign instead):

  • "send a LinkedIn outreach to this list" / "start the outbound" — campaign launch handles bulk personalization + sending. This skill is one lead at a time.

NOT this skill (use send-cold-email instead):

  • "send this email to [name]" — sending is downstream. This skill produces the variant; you choose where it goes.

What This Skill Does

  1. Asks for the message template (or accepts pasted text inline) and the target lead (email, linkedin URL, or full record).
  2. Validates inputs — template non-empty, lead resolvable.
  3. Shells out to npx tsx src/cli/index.ts personalize --template <text> --email <email> (or with --linkedin-url, --first-name, etc.).
  4. Parses the CLI output — variant text, reasoning, cost.
  5. Renders the variant cleanly with a "regenerate?" affordance.

What This Skill Does NOT

  • Send the message. That's send-cold-email (email) or launch-linkedin-campaign (LinkedIn) or your manual paste-and-send.
  • Generate sequences (DM1 + DM2 + follow-ups). That's launch-linkedin-campaign --variants <n>.
  • Modify the underlying template or prompt — only the per-lead substitution.

Pre-flight

  1. Onboarding interruption guard. Run:
    test -f ~/.gtm-os/.in-flight-setup && echo "BLOCKED" || echo "OK"
    
    If BLOCKED, stop and tell the user to finish yalc-gtm start first.

Read the full file on GitHub · 115 lines

Files

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.

Changes

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.

  1. 11d ago First seen · 115 lines · 105 tokens per session scan A aa6274d1819d

Subscribe to this mod's changes

personalize-message is a skill published in the GitHub repository Othmane-Khadri/YALC-the-GTM-operating-system (301 stars, last pushed 21d ago), licensed MIT. It adds 105 tokens to every session and 1,313 once invoked, about $0.0005 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.