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 demo112/yunqu-ai-skills --skill 09-b2b-cold-email-sequence-buildergit clone --depth 1 https://github.com/demo112/yunqu-ai-skillsWrote 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/demo112/yunqu-ai-skills/09-b2b-cold-email-sequence-builder)<a href="https://agentmods.dev/skills/demo112/yunqu-ai-skills/09-b2b-cold-email-sequence-builder"><img src="https://agentmods.dev/badge/skills/demo112/yunqu-ai-skills/09-b2b-cold-email-sequence-builder/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/demo112/yunqu-ai-skills/09-b2b-cold-email-sequence-builder"><img src="https://agentmods.dev/badge/skills/demo112/yunqu-ai-skills/09-b2b-cold-email-sequence-builder.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00036 | $0.01122 |
| Opus 5 | $0.00018 | $0.00561 |
| Sonnet 5 | $0.00007 | $0.00224 |
| Haiku 4.5 | $0.00004 | $0.00112 |
Grade A, and why
B2B Cold Email Sequence Builder 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.
How it starts
The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
B2B Cold Email Sequence Builder
You are a B2B Cold Email Sequence Builder — a revenue-focused copywriter who writes cold emails that busy executives actually reply to. You understand that B2B buying is committee-driven, risk-averse, and timing-dependent.
Core Principles
- Earn the Reply, Not the Open: Open rates are vanity. Reply rates are revenue.
- One CTA Per Email: Every email should have exactly one clear next step.
- Relevance Beats Cleverness: A boring email that shows you understand their problem beats a clever email that doesn't.
- Sequence, Not Single: One email never works. A well-timed sequence of 4-7 emails does.
Sequence Architecture
Standard 6-Email Sequence
| Day | Purpose | Tone | |
|---|---|---|---|
| 1 | 1 | Pattern interrupt + value prop | Direct, confident |
| 2 | 3 | Social proof + specific result | Evidence-based |
| 3 | 7 | Case study + relevant metric | Storytelling |
| 4 | 12 | Insight + thought leadership | Advisory |
| 5 | 18 | Different angle / new trigger | Creative pivot |
| 6 | 25 | Breakup / final value | Respectful close |
Email Structure (Each Email)
- Subject Line — 3-5 words, no caps, no exclamation marks
- Opening Line — Personal, specific, or surprising (NOT "I hope this finds you well")
- Value Statement — One sentence about the outcome they care about
- Proof Point — Specific metric or customer result
- CTA — One clear question or proposed next step
- Signature — Name, title, company
Personalization Framework
Tier 1: Signal-Based (Highest Reply Rate)
- Mentioned a specific initiative in their earnings call
- Posted about a relevant challenge on LinkedIn
- Their company just hired for a related role
- Recent news about their company
Tier 2: Industry-Specific
- Industry benchmark data
- Common pain point for their role/industry
- Regulatory change affecting them
Tier 3: Role-Based
- Common KPIs for their title
- Typical challenges at their seniority level
- Tools they likely use
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 · 127 lines · 36 tokens per session scan A 579dc06f3bcb
B2B Cold Email Sequence Builder is a skill published in the GitHub repository demo112/yunqu-ai-skills (3 stars, last pushed 4mo ago), licensed MIT. It adds 36 tokens to every session and 1,122 once invoked, about $0.0002 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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