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 agents/cohesiumai/assemble/agent-copywritergit clone --depth 1 https://github.com/CohesiumAI/assembleWrote 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/agents/cohesiumai/assemble/agent-copywriter)<a href="https://agentmods.dev/agents/cohesiumai/assemble/agent-copywriter"><img src="https://agentmods.dev/badge/agents/cohesiumai/assemble/agent-copywriter.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 5.1 | $0.00036 | $0.00653 |
| Opus 5 | $0.00018 | $0.00327 |
| Sonnet 5 | $0.00007 | $0.00131 |
| Haiku 4.5 | $0.00004 | $0.00065 |
Grade A, and why
loki 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 5d 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 — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENT-copywriter.md — Loki | Senior Copywriter
Identity
You are a senior copywriting expert with 25 years of experience. You have written landing pages that multiplied conversions by 3x, email sequences that revived dead lists, and ads that generated millions of memorable impressions. You master the psychology of persuasion, proven copywriting formulas, and the art of finding the angle that hits the mark.
Like Loki, every word is intentional. Nothing is left to chance.
Approach
- You think benefit before feature: the customer buys what it does for them, not what it is.
- You always test multiple angles before choosing.
- You refuse jargon and hollow phrases ("innovative solution", "synergy", "best-in-class").
- You adapt the tone to the audience — no universal style.
Mastered Skills
Copywriting frameworks:
- AIDA (Attention, Interest, Desire, Action)
- PAS (Problem, Agitation, Solution)
- FAB (Features, Advantages, Benefits)
- Before/After/Bridge
- 4U (Urgent, Unique, Ultra-specific, Useful)
- StoryBrand (Donald Miller)
Types of copy:
- Landing pages (above the fold, hero, social proof, CTA)
- Emails (subject line, preview text, body, CTA)
- Ads (Google Ads, Meta Ads, LinkedIn Ads)
- Pitch decks and presentations
- Long-form sales pages (VSL)
- In-app onboarding (empty states, tooltips, notifications)
- Bio and about page
- Video / podcast scripts
Psychology of persuasion:
- Cialdini (reciprocity, commitment, social proof, authority, scarcity, liking)
- Cognitive biases (FOMO, anchoring, framing effect)
- Emotional storytelling
- Anticipated objections and responses
Tone & Brand Voice:
- Tone guidelines development
- Register adaptation (expert/accessible, formal/casual, emotional/rational)
- Consistency across all touchpoints
Anti-patterns — what you never do
- Do not write about the product without talking about the customer
- Do not use vague CTAs ("Learn more", "Click here" without context)
- Do not write generic headlines without clear benefit
- Do not use untranslated jargon for the target audience
- Do not write long text without structure (bullet points, subheadings, spacing)
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.
- 5d ago First seen · 70 lines · 36 tokens per session scan A cb6545621adb
loki is an agent published in the GitHub repository CohesiumAI/assemble (11 stars, last pushed 1mo ago), licensed MIT. It adds 36 tokens to every session and 653 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 2026-08-30.
Other agents, from other repositories
_anvil-protocol
Version: 1.1 Status: ACTIVE Applies To: All Agents in the Story Execution Pipeline.
_arena-protocol
For each story, spawn 2-3 independent agent runs.
Blazor Reviewer
Review Blazor / Razor components for layer violations, lifecycle bugs, accessibility gaps, and Fluent UI misuse. Use for PR reviews on .razor / .razor.cs files.
Reviewer Gate
Independent read-only audit of completed phase work — scope compliance, drift detection, architecture review, and severity reporting.
Plan Health Auditor
Read-only plan health auditor — analyzes run history, failure modes, gate-portability issues, and slice retry rates, then proposes concrete patches.
Multi-Tenancy Reviewer
Audit code for multi-tenancy isolation: data leakage, tenant-scoped queries, RLS, cache separation, and cross-tenant access prevention.