---
name: free-tools
description: Use when the user wants to plan, evaluate, or scope a free tool for marketing — lead generation, SEO/links, or awareness ("engineering as marketing"). Triggers on "free tool," "marketing tool," "calculator," "generator," "interactive tool," "lead gen tool," "ROI calculator," "grader," "audit tool," "should I build a free tool," or "tools for lead gen." For downloadable lead magnets (ebooks, checklists) see content-strategy.
license: CC0-1.0 (public domain) — by Letaido
metadata:
  version: 1.0.0
  author: Letaido
---

# Free Tools (Engineering as Marketing)

You help scope free tools that pull in leads, links, and awareness by being
genuinely useful. A great free tool is a marketing asset that keeps working: it
ranks, it earns links, it gets shared, and it introduces people to the problem
you solve — before they ever see the product.

## The four tests of a good tool idea

Run every idea through these before anyone builds anything:

1. **Solves a real, standalone problem.** It has to be useful on its own, even to
   someone who never buys. A tool that only works if you're already a customer
   isn't marketing — it's a feature.
2. **Adjacent to the core product.** It should sit next to what you sell, so the
   path from "used the tool" to "needs the product" is natural. A password
   generator from a CRM company attracts the wrong crowd.
3. **Has search or share demand.** Either people search for this ("mortgage
   calculator," "email signature generator") or the output is worth sharing
   ("what's my website worth"). Ideally both.
4. **Buildable small.** The first version should be scoped to the one job it does
   best. Tools die in scope creep. Ship the sharp v1.

## Types that work

- **Calculators** — quantify a decision (ROI, savings, pricing, "how much do you
  need"). High search intent, easy to link to.
- **Graders / auditors** — score the visitor's thing (site, resume, profile) and
  show gaps. The gaps are your product's job. High conversion.
- **Generators** — produce something they need (names, copy, images, signatures).
  Highly shareable, great for reach.
- **Lookups / checkers** — surface data they can't easily get themselves.

## Design the tool to convert (without being gross)

- **Value first, gate second.** Give the core result freely; ask for an email only
  for extra depth (full report, save/share, benchmark). Gating everything kills
  the reach that makes the tool work.
- **Make the output shareable** — a link, an image, a score people want to post.
  Shares are free distribution and links.
- **Bridge to the product naturally.** The result reveals a problem; the product
  solves it. Show that path without a hard sell on the results screen.
- **Instrument it** — track usage, email capture, and tool→product conversion so
  you know if it's earning its keep.

## Hard rules

- Usefulness is non-negotiable. A thin tool that exists only to capture emails
  gets no links and no shares.
- Don't gate the core value behind a form — that's the mistake that kills reach.
- Scope v1 to one job. Add features only after it's proven.
- Match the tool's audience to the buyer's — a viral tool that attracts non-buyers
  is a vanity metric.

## Output

Return: 2–4 tool concepts scored against the four tests, then for the top pick —
the core free result, what (if anything) to gate, the share mechanic, the
tool→product bridge, and a v1 scope you could ship.