free-tools
Skill190 starsChanged 6 months agoMITView on GitHub
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.
We split this skill into the rules it gives an agent
6 rules. 5 are common, 0 are distinctive, and 1 is very specific to this project.
5
Common
Most of the 8 edited versions we read keep these.
0
Distinctive
This author's own choices. Worth a look.
1
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 15
If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older …
- Common: line 17
Before designing a tool strategy, understand:
- Common: line 68
What problems does your audience Google?: - Search query research, common questions
- Common: line 122
When: Unique concept, core to brand, high strategic value, have dev capacity
- Common: line 126
When: Speed to market, limited dev resources, testing concept
- Common: line 129
When: Something good exists, white-label available, not core differentiator
“Common” is measured: kept by at least 6 in 10 of the 8 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
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
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?
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
- analytics: For measuring tool usage
- emails: For nurturing leads from the tool
Other versions24 projects use a version of this.
Word for word · 13
- open-fox/agents★ 55100% same
- SZcalligrapher/slash-skills-subscription★ 32100% same
- TommyBez/skillsboard★ 8100% same
- agrivisionai/claude-skills★ 1100% same
- altrwork/skills★ 1100% same
- ngothanhtung/claude-code-skills★ 1100% same
- productionx-in/Core-Skills★ 1100% same
- xeroc/skills★ 1100% same
- AayanHetam/chess-coach-ai★ 0100% same
- AbdelrhmanAlquran/claude-skills★ 0100% same
3 more not listed
Edited · 9
- coreyhaines31/marketingskills★ 58k77% same
- anis-dr/skills★ 379% same
- Shri-Phnx/claude-skills★ 265% same
- patinaproject/skills★ 179% same
- claude1cryptwareinfotech-star/Claude-Skill★ 079% same
- GAPZ787/claude-skills★ 079% same
- Gopyr/gopyr-skills-hub★ 082% same
- jratlee/FDI★ 079% same
- masterpeteworld/claude-skills★ 079% same
Wrote their own version · 2
- scayver/marketing-skills★ 8same name
- david-corroy/skills-marketing-fr★ 1same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
Used alongsideProjects with it also use marketing-council, marketing-loops and 10 more.
Other files people use alongside this one.
Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
coreyhaines31Skillmarketing-council
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coreyhaines31Skillmarketing-loops
When the user wants to set up a recurring, self-running marketing workflow — a repeatable loop an AI agent runs on a cadence (weekly, daily, on a trigger) rather than a one-off task. Also use when the user mentions 'marketing loop,' 'recurring marketing workflow,' 'automate my marketing,' 'marketing on autopilot,' 'weekly marketing review,' 'ad fatigue check,' 'weekly ads check,' 'content refresh loop,' 'churn watch,' 'ranking drop alert,' 'run my SEO,' 'SEO operator,' 'daily SEO agent,' 'run my outbound,' 'AI SDR,' 'reply triage,' 'always-on marketing,' 'marketing automation workflow,' or 'run this every week.' Use this to pick, adapt, and schedule an ongoing marketing loop that orchestrates the other marketing skills. For one-off marketing ideas, see marketing-ideas. For the experimentation loop specifically, see ab-testing.
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riggyzSkillattribution
Attribution rules for issues, pull requests, work items, reviews, and comments created or edited by the agent in GitHub, Linear, Azure DevOps, or similar collaboration systems. Use when creating, commenting on, reviewing, or modifying external tracker content.
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OpenAISkillweb-perf
Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed. Biases towards retrieval from current documentation over pre-trained knowledge.
Also in 3 projects that use this
In this repository46 other files it gives its agents.
- AGENTS.mdAGENTS.md
- CLAUDE.mdCLAUDE.md
- ab-testingSkill
- ad-creativeSkill
- adsSkill
- ai-seoSkill
- analyticsSkill
- asoSkill
- churn-preventionSkill
- cold-emailSkill
- co-marketingSkill
- community-marketingSkill
- competitor-profilingSkill
- competitorsSkill
- content-strategySkill
- copy-editingSkill
- copywritingSkill
- croSkill
- customer-researchSkill
- directory-submissionsSkill
- emailsSkill
- imageSkill
- launchSkill
- lead-magnetsSkill
- marketing-ideasSkill
- marketing-planSkill
- marketing-psychologySkill
- offersSkill
- onboardingSkill
- paywallsSkill
- popupsSkill
- pricingSkill
- product-marketingSkill
- programmatic-seoSkill
- prospectingSkill
- public-relationsSkill
- referralsSkill
- revopsSkill
- sales-enablementSkill
- schemaSkill
- seo-auditSkill
- signupSkill
- site-architectureSkill
- smsSkill
- socialSkill
- videoSkill
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
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Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

