# Marfin

> Venture builder of tech companies. We build, launch and scale software, services and media companies that help people work better and live smarter.

Marfin runs on two fronts. **Products** is where Marfin acts as a venture builder, starting and scaling its own software companies. **Services** is where Marfin works for clients, embedding expert teams that ship — staffed by the same people who build the products.

Every page on this site is also available as markdown: append `.md` to any URL, or send `Accept: text/markdown`.

## Start here

- [Portfolio](https://marfin.co/portfolio): every product, service and media property Marfin builds
- [Products](https://marfin.co/products): the software Marfin builds and runs
- [Services](https://marfin.co/services): expert teams that plug into your company and ship
- [Media](https://marfin.co/media): owned portals, social channels and newsletters
- [Company](https://marfin.co/company): the thesis, the principles and Marfin Labs
- [Contact](https://marfin.co/contact): how to reach the right team

## Products

### Marketing & Growth

https://marfin.co/products/category/marketing-growth

- [Wordz](https://marfin.co/products/wordz): Create viral LinkedIn content with AI
- [Postz](https://marfin.co/products/postz): Publish to all your social media accounts with 1 click
- [Rankz](https://marfin.co/products/rankz): Full SEO analysis for your website
- [LinkPic](https://marfin.co/products/linkpic): Create professional pictures with your selfies
- [Cutz](https://marfin.co/products/cutz): Turn long videos into viral short clips with AI
- [Pikey](https://marfin.co/products/pikey): Infinite canvas for design and video with AI
- [CRM](https://marfin.co/products/crm): AI-native CRM to manage deals and contacts

### Career & Education

https://marfin.co/products/category/career-education

- [Matchz](https://marfin.co/products/matchz): Optimize your CV to win job opportunities
- [Emily](https://marfin.co/products/emily): AI English conversation coach
- [Learnz](https://marfin.co/products/learnz): A premium library for founders and entrepreneurs

### Work & Productivity

https://marfin.co/products/category/work-productivity

- [Formz](https://marfin.co/products/formz): Generate forms with AI
- [Agents](https://marfin.co/products/agents): Build and deploy AI agents for your business
- [Chat Marfin](https://marfin.co/products/chat): Every model in one chat

### Industries & Engineering

https://marfin.co/products/category/industries-engineering

- [Mantis](https://marfin.co/products/mantis): Maintenance management (CMMS) with AI

### Cybersecurity

https://marfin.co/products/category/cybersecurity

- [Axen](https://marfin.co/products/axen): Cybersecurity and SOC 2 compliance, platform and services

### Data & Intelligence

https://marfin.co/products/category/data-intelligence

- [Statz](https://marfin.co/products/statz): Analyze data from all your social media accounts

### Consumer Apps

https://marfin.co/products/category/consumer-apps

- [Itz](https://marfin.co/products/itz): Nutrition app and calorie counter with AI
- [Runabit](https://marfin.co/products/runabit): Running plans built with AI
- [Receitinhas](https://marfin.co/products/receitinhas): A community and feed for home cooking

### Other

- [Skills](https://marfin.co/skills): Catalog of AI skills and MCP servers

## Services

- [SEO](https://marfin.co/services/seo): SEO squad for startups and scale-ups
- [dcdr:](https://marfin.co/services/dcdr): Your Software Engineer and CTO on subscription
- [MAAS](https://marfin.co/services/maas): Marketing as a service
- [Pagez](https://pagez.marfin.co): We create your professional landing page
- [Shortz](https://shortz.marfin.co): Short-form video editing for creators
- [Applied](https://marfin.co/applied): Applied AI engineering for the mid-market
- [AI-first](https://marfin.co/ai-first): We help companies become AI-first
- [US Press](https://marfin.co/services/us-press): PR and press placement in the US
- [Design as a Service](https://marfin.co/services/design-as-a-service): Graphic design subscription
- [Growth as a Service](https://growth.marfin.co): Growth squad for scale-ups with PMF

## Media

- [Estoico Diário](https://marfin.co/media/estoico): Stoic philosophy, daily
- [Startupz](https://marfin.co/media/startupz): News from the Brazilian startup ecosystem
- [Driblou](https://marfin.co/media/driblou): Brazilian Série A football news
- [O Futuro do Trabalho](https://marfin.co/media/o-futuro-do-trabalho): Articles and research on the future of work
- [Filósofo Diário](https://marfin.co/media/filosofo-diario): Philosophy, daily
- [Newsletters](https://marfin.co/media/newsletters)
- [The Cap Table](https://marfin.co/media/the-cap-table): News from the UK startup ecosystem
- [Blog](https://marfin.co/media/blog): The Marfin blog

## Skills

Ready-made Claude skills built on Marfin's MCPs. Catalogue: https://marfin.co/skills

- [SEO Quick Audit](https://marfin.co/skills/seo-quickaudit): Full SEO audit of any URL in 60 seconds. 7 pillars, score, top 3 prioritized actions with a share-ready card.
- [LinkedIn Postmortem](https://marfin.co/skills/linkedin-postmortem): Diagnosis of your last 30 LinkedIn posts: what performed, the patterns behind the hits and 3 hypotheses for the next cycle.
- [CNPJ Dossiê](https://marfin.co/skills/cnpj-dossie): Full dossier on any Brazilian CNPJ: registration data, partners, capital, activities and risk indicators on a single page.
- [Keyword Opportunity](https://marfin.co/skills/keyword-opportunity): Finds keywords ranking 8-20 on your domain: the cheapest opportunities to lift traffic without creating new content.
- [Stoic Morning Pages](https://marfin.co/skills/stoic-morning-pages): Stoic morning practice in 5 steps: premeditatio, dichotomy of control, view from above, intention for the day and gratitude. In partnership with @estoicodiario.
- [3-3-3 Method](https://marfin.co/skills/3-3-3-method): Your day planned 3-3-3: 3h of deep work on ONE outcome, 3 priority tasks, 3 non-negotiable routines. In 5 minutes.
- [Pitch Deck Roast](https://marfin.co/skills/pitch-deck-roast): Brutal, structured critique of your pitch deck across 10 criteria. Points out what's vague, what you're hiding and what to cut.
- [PRD Writer](https://marfin.co/skills/prd-writer): Turns a raw feature idea into a dev-ready PRD: problem, metric, scope, edge cases, rollout.
- [Cold Email Engine](https://marfin.co/skills/cold-email-engine): Cold email personalized from the prospect's site and your ICP. Generates 3 variations with different hooks.
- [Discovery Call Script](https://marfin.co/skills/discovery-call-script): 30-min discovery call script for ONE hypothesis and ONE prospect. 4 timed blocks, signals per question, fallbacks and 3 closes (hot/warm/cold).
- [Call Postmortem](https://marfin.co/skills/call-postmortem): Sales-aware transcript postmortem in 5min: signals with quote+timestamp, objections classified by tone (hard/soft/performative), risks with probability, next steps with dates.
- [NPS Clusters](https://marfin.co/skills/nps-clusters): 3-5 thematic clusters per bucket (promoters/passives/detractors) from 50+ qualitative responses. Severity, verbatim quote, concrete action. Top 3 actions by leverage. 3-5 gold quotes for your landing page.
- [Runway Projection](https://marfin.co/skills/runway-projection): Runway across 3 scenarios (base/bear/bull) over 18 months + the risk month identified + 3 actions to extend it by 3 months each. Refuses optimistic-only projections.
- [Pricing Stress Test](https://marfin.co/skills/pricing-stress-test): SaaS pricing stress test across 6 lenses (anchor/decoy/frame/granularity/WTP/churn) with a 1-5 score + 2 weaknesses + 3 moves to TEST (hypothesis/cost/metric/risk/rollback) + a re-eval trigger.
- [Competitor Teardown](https://marfin.co/skills/competitor-teardown): Public teardown of a competitor: positioning, price, claims, segment. No paid tools.
- [Feature Matrix](https://marfin.co/skills/feature-matrix): 3x3 matrix (up to 5x5) vs 2-4 direct competitors: 3 real differentiators, 3 defensive gaps rated by impact and 1-2 redundancies to CUT from the pitch. Capped at 4 columns to preserve decision power.
- [OKR Breakdown](https://marfin.co/skills/okr-breakdown): Audits a vague OKR and returns 5-7 measurable KRs (baseline/target/deadline/confidence), 1-3 initiatives per KR and the top 2 prioritized by impact×effort. Refuses task-as-KR and targets without rationale.
- [Weekly Review](https://marfin.co/skills/weekly-review): Weekly review script for the solo founder: wins, losses, pending decisions, next week's focus.
- [Decision Doc](https://marfin.co/skills/decision-doc): 1-page ADR with a mandatory rollback plan. Refuses trivially reversible decisions and refuses to ship without a rollback.
- [Content Calendar 30](https://marfin.co/skills/content-calendar-30): 30 days with a pre-written hook, a 5-format mix (post/thread/video/newsletter/case study), 50/30/20 tone (educational/storytelling/promotional) and 3 tentpoles marked. Distributed by each channel's peak time.
- [Landing Copy Engine](https://marfin.co/skills/landing-copy-engine): Paste-ready PAS landing copy: 3 headlines (≤9 words, A/B candidates), sub, 3 before-vs-after bullets, social proof by stage, how-it-works, 6-objection FAQ, CTA + microcopy, A/B priorities.
- [Customer Interview 5-Why](https://marfin.co/skills/customer-interview-5why): 5-Why script for customer discovery: every Why about past behavior (never future intent), with the signal to listen for, follow-ups for socially-correct answers and a verbal bridge to the next one. Post-call summary template included.
- [Changelog from Commits](https://marfin.co/skills/changelog-from-commits): End-user changelog in plain prose from a raw git log. Filters noise (chore/refactor/ci), groups by theme, translates jargon, detects breaking changes. 4 sections + summary + social hook.
- [PR Triager](https://marfin.co/skills/pr-triager): PR triage in 2min: impact, review time, suggested owner, risky files, 8 red flags, questions for the author. Before you open a single file.
- [Stack Cost Compare](https://marfin.co/skills/stack-cost-compare): Compares 2-4 stacks for YOUR workload with projected cost, hidden gotchas (NAT Gateway, egress, CPU limits), trade-offs per dimension and a recommendation with explicit confidence + a trigger to re-evaluate.
- [Daily Standup Synth](https://marfin.co/skills/daily-standup-synth): 5 standups → 1 page in ≤350 words for investors/board: 3 real wins, blockers that matter (3+ days OR blocking deploy), plan vs reality, an open question with 2-3 options.

## MCPs

MCP servers for every Marfin product — connect them to Claude, Cursor or any MCP client. Each requires an active subscription to its product; install instructions live on each page. Catalogue: https://marfin.co/mcps

- [Rankz](https://marfin.co/mcps/rankz): Full SEO analysis by URL — 7 pillars, score, prioritized actions.
- [Statz](https://marfin.co/mcps/statz): Social media metrics and analytics in a single API.
- [Wordz](https://marfin.co/mcps/wordz): Generation and analysis of LinkedIn-optimized content.
- [Postz](https://marfin.co/mcps/postz): Publishing and scheduling across every social network.
- [Marfin CRM](https://marfin.co/mcps/marfin-crm): Deals, contacts, companies and activities from any AI agent.
- [Runabit](https://marfin.co/mcps/runabit): Running quests, training plans and progression for athletes.
- [Axen](https://marfin.co/mcps/axen): Security findings your AI can list, triage and fix.

## Optional

- [Marfin One](https://marfin.co/one): every active product on one subscription
- [Labs](https://marfin.co/labs): experiments and early bets
- [Blog](https://blog.marfin.co): notes on building
- [Store](https://marfin.store): merch and goods