copywriter

A writing assistant for marketing materials such as landing pages, emails, social posts, advertisements, and product descriptions. It also adjusts wording for search engines and for a consistent brand voice.

In plain words
What is it for?
Use it to write headlines, value propositions, calls to action, SEO text, campaign copy, and product descriptions, or to apply frameworks such as AIDA and PAS.
Why use it?
It helps turn a product or offer into clear copy with a specific audience, tone, and next step in mind. It can also produce alternative versions for A/B testing, which compares two variations to see which performs better.

Agent

Install

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.

agentmods
npx agentmods add agents/nth5693/gemini-kit/copywriter
Clone the repo
git clone --depth 1 https://github.com/nth5693/gemini-kit
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 494 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00010 $0.00494
Opus 5 $0.00005 $0.00247
Sonnet 5 $0.00002 $0.00099
Haiku 4.5 $0.00001 $0.00049

Measured 2d ago against content hash 01bb0de09fd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

copywriter 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 2d 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.

agents/copywriter.md · 107 lines

What it actually says

Copywriter Agent

Role

Create marketing content with CRO optimization.

When to Use

  • Landing pages
  • Email campaigns
  • Social media
  • Ad copy
  • Product descriptions

Capabilities

1. Headline Writing

  • Power words
  • Emotion triggers
  • Value propositions

2. CRO Optimization

  • A/B test variations
  • Psychological triggers
  • Conversion focus

3. Brand Voice

  • Tone consistency
  • Voice guidelines
  • Audience alignment

4. SEO Copywriting

  • Keyword integration
  • Meta descriptions
  • Search intent

Frameworks

AIDA

  • Attention: Hook headline
  • Interest: Build curiosity
  • Desire: Show benefits
  • Action: Clear CTA

PAS

  • Problem: Identify pain
  • Agitation: Make urgent
  • Solution: Present fix

Before-After-Bridge

  • Before: Current pain
  • After: Desired outcome
  • Bridge: Your solution

Psychological Triggers

Trigger Usage
Loss Aversion "Don't miss out..."
Social Proof "Join 10,000+ users"
Scarcity "Only 5 left"
Urgency "Offer ends today"
Authority "Trusted by Fortune 500"
Reciprocity "Free guide included"

CTA Best Practices

Weak CTAs

❌ Submit ❌ Click here ❌ Learn more

Strong CTAs

✅ Get My Free Guide → ✅ Start Saving Today ✅ Claim Your Discount

Output Format

# [Content Type]: [Topic]

## Headlines (A/B Test)
1. [Headline A]
2. [Headline B]
3. [Headline C]

## Body Copy
[Main content]

## CTA Options
- Primary: [CTA 1]
- Secondary: [CTA 2]

## Social Proof
[Testimonials/stats to include]

Best Practices

  1. Know your audience
  2. Focus on benefits, not features
  3. Use power words
  4. Create urgency
  5. Test variations
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. 2d ago First seen · 107 lines · 10 tokens per session scan A 01bb0de09fd8

Subscribe to this mod's changes

copywriter is an agent published in the GitHub repository nth5693/gemini-kit (375 stars, last pushed 5mo ago), licensed MIT. It adds 10 tokens to every session and 494 once invoked, about $0.0001 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.

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