free-tools

Use it when:: You're considering building a free calculator, generator, grader or similar tool to attract leads or links.
It does:: Finds tool ideas in your audience's pain points, checks search demand and fit with your product, and weighs gating, build options and scope.
You get:: A verdict from an eight-factor scorecard out of 40: strong candidate, promising, or reconsider.
Unlike lead-magnets:: That one, from the same repo, covers downloadable content such as ebooks and checklists; this one is about interactive tools.

TL;DR

Engineering as marketing: building something useful and giving it away so it brings in leads, search traffic and links. The idea is to take a capability others charge for and offer a free version, as Unsplash did with stock photos. A good tool solves a real problem for your audience, leads naturally to your product, and is worth more in leads than it costs to build and maintain. It sorts tools into calculators, generators, analyzers, testers, libraries and interactive tools, then finds ideas in what your audience searches for, the tedious tasks they do by hand, and what they need before buying. It weighs gating (fully, partly or not at all), keyword targets, custom, no-code or embedded builds, and a first version that skips accounts and saved results. Each idea is scored 1 to 5 on eight factors, including search demand, buyer match, uniqueness and maintenance burden. It warns against overbuilding before demand is proven and against counting visitors instead of leads. It reads your product marketing context if you have it (a shared file on your product, audience and positioning that the repo's product-marketing skill writes).

Summarizes the skill at 96798cf.

npx skills add https://github.com/coreyhaines31/marketingskills --skill free-tools

skills.sh page Source on GitHub All skills from coreyhaines31/marketingskills

Total Downloads: 80,805 on skills.sh, Nov 9, 2026
Repo stars: 59,261 coreyhaines31/marketingskills
First seen: May 14, 2026 on skills.sh

Weekly Downloads

3.4K

+26% over the 8 weeks to Nov 9

Weekly values

Week to	Installs
Sep 21	2,673
Sep 28	2,725
Oct 5	3,252
Oct 12	3,333
Oct 19	2,985
Oct 26	3,321
Nov 2	3,619
Nov 9	3,366

Category	category:marketing SEO, copy, conversion, social media and e-commerce.
Type	type:workflow A multi-step process the agent follows: interview, debug, run a TDD loop, review.
Effect	effect:none Adds no side effects of its own. It shapes how the agent thinks, writes or reviews. Guidelines and routers are always effect:none, even when the task they support edits code.
Needs	needs:none Instructions only. Works in any agent that supports skills.
Publisher	by:community Everyone else. Unverified vendor claims default to community.
Topics	marketing seo

SKILL.md

From coreyhaines31/marketingskills at 96798cf. Checked daily, last changed Nov 6, 2026.

Frontmatter

name: free-tools
description: When the user wants to plan, evaluate, or build a free tool for marketing purposes — lead generation, SEO value, or brand awareness. Also use when the user mentions "engineering as marketing," "free tool," "marketing tool," "calculator," "generator," "interactive tool," "lead gen tool," "build a tool for leads," "free resource," "ROI calculator," "grader tool," "audit tool," "should I build a free tool," or "tools for lead gen." Use this whenever someone wants to build something useful and give it away to attract leads or earn links. For downloadable content lead magnets (ebooks, checklists, templates), see lead-magnets.
metadata:
  version: 2.0.3

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

"Your product is my marketing opportunity." Bezos said "your margin is my opportunity." The engineering-as-marketing version: take a capability others monetize and build a free version as an acquisition channel. Unsplash gave away the stock photos Getty sold — and Getty acquired it. See references/tool-benchmarks.md for sourced cases and measurement limits.

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

For sourced case examples (Unsplash, HubSpot Website Grader, Buffer, Shopify) and evidence requirements: See references/tool-benchmarks.md

Ideation Framework

Start with Pain Points

What problems does your audience Google? - Search query research, common questions
What manual processes are tedious? - Spreadsheet tasks, repetitive calculations
What do they need before buying your product? - Assessments, planning, comparisons
What information do they wish they had? - Data they can't easily access, benchmarks

Validate the Idea

Search demand: Is there search volume? How competitive?
Uniqueness: What exists? How can you be 10x better?
Lead quality: Does this audience match buyers?
Build feasibility: How complex? Can you scope an MVP?

Lead Capture Strategy

Gating Options

Approach	Pros	Cons
Fully gated	Maximum capture	Lower usage
Partially gated	Balance of both	Common pattern
Ungated + optional	Maximum reach	Lower capture
Ungated entirely	Pure SEO/brand	No direct leads

Lead Capture Best Practices

Value exchange clear: "Get your full report"
Minimal friction: Email only
Show preview of what they'll get
Optional: Segment by asking one qualifying question

SEO Considerations

Keyword Strategy

Tool landing page: "[thing] calculator", "[thing] generator", "free [tool type]"

Supporting content: "How to [use case]", "What is [concept]"

Link Building

Free tools attract links because:

Genuinely useful (people reference them)
Unique (can't link to just any page)
Shareable (social amplification)

Build vs. Buy

Build Custom

When: Unique concept, core to brand, high strategic value, have dev capacity

Use No-Code Tools

Options: Outgrow, Involve.me, Typeform, Tally, Bubble, Webflow When: Speed to market, limited dev resources, testing concept

Embed Existing

When: Something good exists, white-label available, not core differentiator

MVP Scope

Minimum Viable Tool

Core functionality only—does the one thing, works reliably
Essential UX—clear input, obvious output, mobile works
Basic lead capture—email collection, leads go somewhere useful

What to Skip Initially

Account creation, saving results, advanced features, perfect design, every edge case

Evaluation Scorecard

Rate each factor 1-5:

Factor	Score
Search demand exists	___
Audience match to buyers	___
Uniqueness vs. existing	___
Natural path to product	___
Build feasibility	___
Maintenance burden (inverse)	___
Link-building potential	___
Share-worthiness	___

25+: Strong candidate | 15-24: Promising | <15: Reconsider

Task-Specific Questions

What existing tools does your audience use for workarounds?
How do you currently generate leads?
What technical resources are available?
What's the timeline and budget?

Common Pitfalls

Over-engineering — Shipping a bloated tool before validating demand. Unsplash started as a Tumblr blog with Dropbox links, then invested in a custom site after demand emerged. Scope to one useful job and test it with your audience.
Poor product integration — A tool with no natural path to your product earns traffic but not pipeline. The best cases surface the product's value (an analyzer can demonstrate the problem your paid product solves).
Maintenance / security debt — Tools that scrape, call APIs, or take user input rot and become attack surfaces. Budget for upkeep before you build.
Vanity metrics — Visitors and usage feel good but don't pay. Track leads, qualification rate, and trial/signup conversion — measured in your own funnel.

Related Skills

lead-magnets: For downloadable content lead magnets (ebooks, checklists, templates)
cro: For optimizing the tool's landing page
seo-audit: For SEO-optimizing the tool
link-building: For promoting the tool to sites that link to resources like it
analytics: For measuring tool usage
emails: For nurturing leads from the tool