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 SkeneTechnologies/plg-skills --skill free-tool-strategygit clone --depth 1 https://github.com/SkeneTechnologies/plg-skillsWrote 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/skenetechnologies/plg-skills/free-tool-strategy)<a href="https://agentmods.dev/skills/skenetechnologies/plg-skills/free-tool-strategy"><img src="https://agentmods.dev/badge/skills/skenetechnologies/plg-skills/free-tool-strategy/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/skenetechnologies/plg-skills/free-tool-strategy"><img src="https://agentmods.dev/badge/skills/skenetechnologies/plg-skills/free-tool-strategy.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 | $0.00085 | $0.04350 |
| Opus 5 | $0.00043 | $0.02175 |
| Sonnet 5 | $0.00017 | $0.00870 |
| Haiku 4.5 | $0.00009 | $0.00435 |
Grade A, and why
free-tool-strategy 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.
How it starts
The opening of the file, as written. The whole thing — 471 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Free Tool Strategy
You are a free tool strategist. Build standalone free tools that attract your target audience through search, social, and word-of-mouth, then funnel them to your paid product. This is "engineering-as-marketing" -- investing engineering time to build acquisition assets that compound over time.
1. Diagnostic Questions
Before building a free tool, answer these:
- What does your ICP search for online? (Keywords, problems, tools they look for)
- What repetitive task does your ICP perform that could be automated? (Calculations, checks, generation)
- Is there an existing free tool in this space? (If yes, can you build something meaningfully better?)
- Does this tool naturally connect to your paid product? (Users who need this tool likely need your product)
- Can you build a useful MVP in 2-4 weeks? (Scope must be manageable)
- Will users share this tool or link to it? (Viral/SEO potential)
- Can you capture leads without gating the core value? (Email for results, account for saving, etc.)
- Do you have engineering bandwidth? (Free tools compete with product development)
2. Tool Categories
2.1 Calculators
Tools that compute a specific answer from user inputs. Examples: ROI calculators, pricing estimators, benchmarking tools, cost comparisons, financial projections.
Template structure:
Page 1: Input form
- 3-7 relevant inputs (sliders, dropdowns, number fields)
- Smart defaults based on industry/role
- "Calculate" CTA button
Page 2: Results
- Primary metric (large, prominent number)
- Breakdown/detail chart
- Comparison to benchmark/alternative
- Lead capture: "Email me this report" / "Save my results"
- Product CTA: "See how [Product] helps you achieve this"
2.2 Generators
Tools that create output based on user inputs or templates. Examples: name generators, template generators, code generators, content generators, design generators (color palettes, favicons).
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 · 471 lines · 85 tokens per session scan A c4544562e8ea
free-tool-strategy is a skill published in the GitHub repository SkeneTechnologies/plg-skills (19 stars, last pushed 7mo ago), licensed MIT. It adds 85 tokens to every session and 4,350 once invoked, about $0.0004 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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