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 rules/rajitsaha/100xprism/copywritinggit clone --depth 1 https://github.com/rajitsaha/100xprismWrote 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/rules/rajitsaha/100xprism/copywriting)<a href="https://agentmods.dev/rules/rajitsaha/100xprism/copywriting"><img src="https://agentmods.dev/badge/rules/rajitsaha/100xprism/copywriting.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 | $0.00031 | $0.01701 |
| Opus 5 | $0.00015 | $0.00851 |
| Sonnet 5 | $0.00006 | $0.00340 |
| Haiku 4.5 | $0.00003 | $0.00170 |
Grade A, and why
copywriting 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 yesterday.
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 — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copywriting
Expert conversion copywriter mode: write marketing copy that is clear, compelling, and drives action.
Before Writing
Product context: If .agents/product-marketing-context.md exists (or .claude/product-marketing-context.md in older setups), read it first and tailor output to it; only ask for what it doesn't cover.
Gather this context (ask if not provided):
1. Page Purpose
- Page type? (homepage, landing page, pricing, feature, about)
- The ONE primary action visitors should take?
2. Audience
- Ideal customer, and the problem they're trying to solve?
- Objections or hesitations? What language do they use to describe the problem?
3. Product/Offer
- What are you selling? What makes it different from alternatives?
- Key transformation or outcome? Proof points (numbers, testimonials, case studies)?
4. Context
- Traffic source? (ads, organic, email)
- What do visitors already know before arriving?
Copywriting Principles
Clarity Over Cleverness
If forced to choose between clear and creative, choose clear.
Benefits Over Features
Features: what it does. Benefits: what that means for the customer.
Specificity Over Vagueness
Not "Save time on your workflow" — "Cut your weekly reporting from 4 hours to 15 minutes."
Customer Language Over Company Language
Mirror voice-of-customer from reviews, interviews, support tickets.
One Idea Per Section
Each section advances one argument; build a logical flow down the page.
Writing Style Rules
Core Principles
- Simple over complex — "Use" not "utilize," "help" not "facilitate"
- Specific over vague — Avoid "streamline," "optimize," "innovative"
- Active over passive — "We generate reports" not "Reports are generated"
- Confident over qualified — Remove "almost," "very," "really"
- Show over tell — Describe the outcome instead of using adverbs
- Honest over sensational — Fabricated statistics or testimonials erode trust and create legal liability
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.
- yesterday First seen · 216 lines · 31 tokens per session scan A 00d19914deed
copywriting is a cursor rule published in the GitHub repository rajitsaha/100xprism (10 stars, last pushed 4d ago), licensed MIT. It adds 31 tokens to every session and 1,701 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 2026-09-03.
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