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 guia-matthieu/clawfu-skills --skill challenger-salegit clone --depth 1 https://github.com/guia-matthieu/clawfu-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/guia-matthieu/clawfu-skills/challenger-sale)<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/challenger-sale"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/challenger-sale/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/guia-matthieu/clawfu-skills/challenger-sale"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/challenger-sale.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 | $0.00093 | $0.04681 |
| Opus 5 | $0.00046 | $0.02341 |
| Sonnet 5 | $0.00019 | $0.00936 |
| Haiku 4.5 | $0.00009 | $0.00468 |
Grade A, and why
challenger-sale 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 9d 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 — 667 lines — stays where its author put it; the contents beside it link to each section on GitHub.
The Challenger Sale
Stop being a relationship builder. Learn the research-backed methodology that top performers use to teach, tailor, and take control of sales conversations.
When to Use This Skill
- Complex B2B sales where buyers have done their research
- Commoditized markets where differentiation is hard
- Sophisticated buyers who know what they need (or think they do)
- Large deals requiring consensus among stakeholders
- Solution selling that requires changing buyer thinking
- Sales team development to raise performance
Methodology Foundation
| Aspect | Details |
|---|---|
| Source | Matthew Dixon & Brent Adamson - The Challenger Sale (2011) |
| Research Base | Study of 6,000+ sales reps across 90 companies by CEB (now Gartner) |
| Core Principle | "The best salespeople don't just build relationships—they challenge customers' thinking with insights they couldn't have found on their own." |
| Why This Matters | In the age of informed buyers, relationship-based selling underperforms. Challengers win by teaching customers something new about their business. |
What Claude Does vs What You Decide
| Claude Does | You Decide |
|---|---|
| Structures production workflow | Final creative direction |
| Suggests technical approaches | Equipment and tool choices |
| Creates templates and checklists | Quality standards |
| Identifies best practices | Brand/voice decisions |
| Generates script outlines | Final script approval |
What This Skill Does
- Identifies the Challenger profile - The highest-performing sales type
- Teaches the Teach-Tailor-Take Control framework - The Challenger methodology
- Develops Commercial Teaching - Leading with insights, not features
- Builds tailoring skills - Resonating with different stakeholders
- Masters constructive tension - Pushing back productively
- Improves complex deal navigation - Consensus-building approach
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.
- 9d ago First seen · 667 lines · 93 tokens per session scan A d5657f590c96
challenger-sale is a skill published in the GitHub repository guia-matthieu/clawfu-skills (149 stars, last pushed 5mo ago), licensed MIT. It adds 93 tokens to every session and 4,681 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 2026-09-03.
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