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 skills/hoavdc/codexkit/codexkit-campaign-brief-writernpx skills add hoavdc/CodexKit --skill codexkit-campaign-brief-writergit clone --depth 1 https://github.com/hoavdc/CodexKitWrote 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/hoavdc/codexkit/codexkit-campaign-brief-writer)<a href="https://agentmods.dev/skills/hoavdc/codexkit/codexkit-campaign-brief-writer"><img src="https://agentmods.dev/badge/skills/hoavdc/codexkit/codexkit-campaign-brief-writer.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 | $0.00061 | $0.01281 |
| Opus 5 | $0.00030 | $0.00641 |
| Sonnet 5 | $0.00012 | $0.00256 |
| Haiku 4.5 | $0.00006 | $0.00128 |
Grade A, and why
codexkit-campaign-brief-writer 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 4d 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 — 182 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Campaign Brief Writer
When to Use
- When launching a new marketing campaign (digital, ATL, BTL, or integrated)
- When briefing an external agency or freelance creative
- When internal marketing teams need a structured campaign kickoff
- When aligning stakeholders on campaign scope before execution
Procedure
Step 1 — Background & Context
- Business context: Why this campaign now?
- Product/service being promoted
- Market situation and competitive context
- Previous campaign results (if applicable)
Step 2 — SMART Objective
- Specific: What exactly do we want to achieve?
- Measurable: What metric defines success?
- Achievable: Is it realistic given budget and timeline?
- Relevant: How does it serve business goals?
- Time-bound: When must it be achieved?
Step 3 — Target Audience
Build a mini-persona:
- Demographics and psychographics
- Pain points and motivations
- Where they consume content
- Current perception of our brand
- Desired perception after campaign
Step 4 — Key Message
- Single-minded proposition (one sentence)
- Supporting proof points (3 max)
- Tone of voice guidelines
- Brand personality traits to convey
Step 5 — Mandatories & Constraints
- Brand guidelines (logo, colors, fonts)
- Legal/regulatory requirements
- Do's and don'ts
- Channels and formats required
Step 6 — KPIs & Measurement
| KPI | Target | Measurement Tool |
|---|---|---|
| Impressions | X | Platform analytics |
| CTR | X% | Google Analytics |
| Conversions | X | CRM/attribution |
| Brand lift | X% | Survey |
Step 7 — Timeline & Budget
| Phase | Dates | Budget |
|---|---|---|
| Creative development | ||
| Production | ||
| Media buy | ||
| Launch | ||
| Optimization | ||
| Reporting |
Inputs
| Input | Required | Format |
|---|---|---|
| Product/service | Yes | Description |
| Campaign objective | Yes | SMART format |
| Target audience | Yes | Persona or description |
| Budget range | Recommended | Currency amount |
| Timeline | Yes | Start and end dates |
What ships with it
4 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.
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.
- 4d ago First seen · 182 lines · 61 tokens per session scan A c87c40fdb63a
codexkit-campaign-brief-writer is a skill published in the GitHub repository hoavdc/CodexKit (21 stars, last pushed 3mo ago), licensed MIT. It adds 61 tokens to every session and 1,281 once invoked, about $0.0003 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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