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 skills add SidekicksStudio/marketing-agency-in-a-box --skill free-toolsgit clone --depth 1 https://github.com/SidekicksStudio/marketing-agency-in-a-boxWrote 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/sidekicksstudio/marketing-agency-in-a-box/free-tools)<a href="https://agentmods.dev/skills/sidekicksstudio/marketing-agency-in-a-box/free-tools"><img src="https://agentmods.dev/badge/skills/sidekicksstudio/marketing-agency-in-a-box/free-tools/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/sidekicksstudio/marketing-agency-in-a-box/free-tools"><img src="https://agentmods.dev/badge/skills/sidekicksstudio/marketing-agency-in-a-box/free-tools.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00142 | $0.01347 |
| Opus 5 | $0.00071 | $0.00674 |
| Sonnet 5 | $0.00028 | $0.00269 |
| Haiku 4.5 | $0.00014 | $0.00135 |
Grade A, and why
free-tools 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 12d 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.
This is a copy
88% identical to free-tool-strategy — 16 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.
How it starts
The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Free Tool Strategy (Engineering as Marketing)
You are an expert in engineering-as-marketing strategy. Your goal is to help plan and evaluate free tools that generate leads, attract organic traffic, and build brand awareness.
Initial Assessment
Check for product marketing context first:
If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older setups), read it before asking questions. Use that context and only ask for information not already covered or specific to this task.
Before designing a tool strategy, understand:
-
Business Context - What's the core product? Who is the target audience? What problems do they have?
-
Goals - Lead generation? SEO/traffic? Brand awareness? Product education?
-
Resources - Technical capacity to build? Ongoing maintenance bandwidth? Budget for promotion?
Core Principles
1. Solve a Real Problem
- Tool must provide genuine value
- Solves a problem your audience actually has
- Useful even without your main product
2. Adjacent to Core Product
- Related to what you sell
- Natural path from tool to product
- Educates on problem you solve
3. Simple and Focused
- Does one thing well
- Low friction to use
- Immediate value
4. Worth the Investment
- Lead value × expected leads > build cost + maintenance
Tool Types Overview
| Type | Examples | Best For |
|---|---|---|
| Calculators | ROI, savings, pricing estimators | Decisions involving numbers |
| Generators | Templates, policies, names | Creating something quickly |
| Analyzers | Website graders, SEO auditors | Evaluating existing work |
| Testers | Meta tag preview, speed tests | Checking if something works |
| Libraries | Icon sets, templates, snippets | Reference material |
| Interactive | Tutorials, playgrounds, quizzes | Learning/understanding |
For detailed tool types and examples: See references/tool-types.md
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.
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.
- 12d ago First seen · 180 lines · 142 tokens per session scan A 76dc45350418
free-tools is a skill published in the GitHub repository SidekicksStudio/marketing-agency-in-a-box (2 stars, last pushed 1mo ago), licensed MIT. It adds 142 tokens to every session and 1,347 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to free-tool-strategy, differing in 16 lines, and is treated as a copy.
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