copywriting

A guide to writing text that encourages a reader to take an action, such as buying, signing up, or clicking.

In plain words
What is it for?
Writing landing pages, emails, advertisements, sales pages, product descriptions, headlines, calls to action, and email sequences.
Why use it?
It helps address attention, interest, desire, doubts, and next steps in a planned way rather than relying on ad-hoc wording.

Skill for Claude CodeCodex

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 skills/zai-org/synapse/copywriting
Any agent
npx skills add zai-org/Synapse --skill copywriting
Clone the repo
git clone --depth 1 https://github.com/zai-org/Synapse

Made for: Claude Code, Codex.

Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,340 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00123 $0.02340
Opus 5 $0.00062 $0.01170
Sonnet 5 $0.00025 $0.00468
Haiku 4.5 $0.00012 $0.00234

Measured 2d ago against content hash 4d89ce0eaad0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 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.

Origin

This is a copy

95% identical to copywriting — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.setup/skills/clawhub/skills/copywriting/SKILL.md · 225 lines

How it starts

The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copywriting

Overview

Copywriting is not creative writing. It's strategic writing designed to move someone toward a decision. For solopreneurs, good copy can double conversion rates without changing anything else in your product or funnel. This playbook gives you frameworks and techniques to write copy that sells — without sounding sleazy.


Step 1: Understand the Core Job of Copy

Copy exists to:

  1. Grab attention (get them to stop scrolling)
  2. Create desire (make them want what you're offering)
  3. Remove friction (address doubts and objections)
  4. Prompt action (tell them exactly what to do next)

Every piece of copy — a headline, a landing page, an email — must accomplish all four. If it fails at any one, the copy fails.


Step 2: The Anatomy of Persuasive Copy

Effective copy follows a structure. The three most battle-tested frameworks:

Framework 1: AIDA (Attention, Interest, Desire, Action)

Classic and reliable. Use for landing pages, emails, and sales pages.

ATTENTION:    Bold headline that stops the scroll (the promise or the pain)
INTEREST:     Elaborate on the problem or opportunity (make them nod "yes, that's me")
DESIRE:       Show the transformation or outcome (paint the picture of success)
ACTION:       Clear CTA (tell them exactly what to do next)

Example (SaaS landing page):

ATTENTION:    "Spend 10 hours/week on client reporting? Automate it in 10 minutes."
INTEREST:     "Most agencies waste entire days pulling data from 6 different tools
               into one report. Your clients don't care about your process — they
               want insights, fast."
DESIRE:       "Imagine sending polished, branded reports automatically every Monday.
               Your clients stay informed. Your team stays focused on the work that
               actually grows accounts."
ACTION:       "Start your free 14-day trial — no credit card required."

Framework 2: PAS (Problem, Agitate, Solution)

Best for pain-driven products or when your audience is already aware of the problem.

Read the full file on GitHub · 225 lines

Files

What ships with it

2 files 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. 2d ago First seen · 225 lines · 123 tokens per session scan A 4d89ce0eaad0

Subscribe to this mod's changes

copywriting is a skill published in the GitHub repository zai-org/Synapse (438 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 123 tokens to every session and 2,340 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to copywriting, differing in 3 lines, and is treated as a copy.

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