Alex Built by Alex McFarland

Your own AI co-writer.
Built for your business.

A custom co-writer and thinking partner. Write content, brainstorm ideas, plan strategy, research anything — all with an AI that knows your voice and your business.

Apply Now See What's Inside
your-cowriter/
📄 CLAUDE.md Your co-writer's brain
📁 context/
└ voice-dna.json Your voice
└ business.json Your business
└ audience.json Your audience
📁 .claude/agents/ Your agents
📁 .claude/skills/ Your skills
The math

Skip the retainers.
Own your co-writer.

The old way

Monthly retainers

$3-10k/mo
Writers, marketers, researchers
  • Dependent on their availability
  • Back-and-forth on every project
  • They leave, you start over
  • Separate hires for writing, research, marketing
The new way

Your AI co-writer

One-time
Pay once. Yours forever.
  • Content, research, strategy, marketing
  • Available 24/7, knows your voice
  • You own it, no dependencies
  • One system handles everything

No retainers. No monthly fees.

See it work

Your co-writer in action.
Not a chatbot. A thinking partner.

Simple prompts. No hand-holding required. It already knows your context.

claude — your-cowriter
You
newsletter on this https://anthropic.com/news/claude-model-spec
Thinking — newsletter request, delegating to newsletter-writer agent...
Agent newsletter-writer
WebFetch anthropic.com/news/claude-model-spec
Read voice-dna.json, icp.json
Skill thought-leadership
✓ Newsletter draft ready
Subject: Anthropic just published their AI's soul

Yesterday, Anthropic did something no AI company has done before.

They published the complete document that defines who Claude is. Not marketing. Not a press release. The actual instructions...

[1,200 words in your voice, formatted for Substack]
You
I need a deep dive on the AI agents market for my investor update next week
Thinking — research task for investor materials, delegating to researcher...
Agent researcher
WebSearch "AI agents market 2024" "agentic AI funding" "autonomous agents startups"
WebFetch a16z.com, sequoia.com, crunchbase.com/ai-agents
Read business-profile.json
Thinking — synthesizing market data, formatting for investor context...
✓ Research report ready
AI Agents Market Deep Dive — Q4 2024

Market Size: $2.1B in 2024, projected $28.5B by 2028 (CAGR 68%)...

Key Players: Anthropic (Claude), OpenAI (GPT Agents), Langchain, CrewAI...

Your Position: Based on your focus on [your niche], the opportunity is...

[Full report with sources, charts data, and strategic recommendations]
You
need a welcome sequence for new subscribers
Thinking — email sequence request, delegating to marketing-writer...
Agent marketing-writer
Read voice-dna.json, icp.json, business-profile.json
Skill sales-email-sequence
Glob **/emails/*.md — Found 8 past emails
✓ Email sequence ready
Email 1 (Day 0): "Here's what you signed up for"
Email 2 (Day 2): "The mistake everyone makes"
Email 3 (Day 5): "My system (the short version)"
Email 4 (Day 8): "Quick question for you"
Email 5 (Day 12): "Ready to go deeper?"

[Full copy for each email, ready to paste]
You
help me think through pricing for the new course. not sure if I should do $997 or $1500
Thinking — strategy discussion, no agent needed, handling directly...
Read business-profile.json, icp.json
Read products/co-writer-system.json
Thinking — analyzing positioning, audience income, market comparables...
✓ Strategy breakdown
Based on your ICP and positioning, here's how I'd think about it:

$997: Lower barrier, higher volume needed. Works if you're building audience...

$1,500: Signals premium. Your audience (founders, execs) won't blink at this price if the value is clear...

My take: Given your premium positioning and done-for-you offer, $1,500 creates better price anchoring...

[Continues with pros/cons, launch strategy options]

No prompt engineering. No "write in my style." It already knows.

What's inside

A complete co-writer.
Ready to work with you.

Your co-writer comes loaded with agents and skills tailored to your workflows. Here's what's possible:

Agents — your specialized co-writers
📝

Newsletter Writer

Drafts complete newsletters in your voice. Knows your format and style.

📱

Social Media Writer

Creates LinkedIn posts, Twitter threads, Substack notes. Platform-native.

🔄

Content Repurposer

Turns long-form content into multiple pieces. Videos to threads. Podcasts to posts.

🔍

Researcher

Gathers context, analyzes trends, prepares briefs for your content.

💼

Marketing Writer

Email sequences, sales pages, profile optimization. Conversion-focused.

💬

Community Engagement

Comment responses, DM replies, discussion threads. Your voice everywhere.

Skills — specialized expertise
🧵

Twitter Threads

Hooks, flow, engagement. Optimized for the algorithm.

💼

LinkedIn Posts

Professional but personal. Built for the feed.

📚

How-To Guides

Step-by-step content that teaches and converts.

📧

Email Sequences

Welcome flows, launch sequences, nurture campaigns.

🎯

ICP Builder

Define your ideal customer so every piece hits.

🎙️

Voice DNA

Your writing style captured and replicated.

These are examples. Your co-writer is customized for your specific workflows.

Alex McFarland
About me

I'm Alex. I build
AI co-writers.

I've spent 6+ years in AI content — working with startups, managing content operations, writing for publications. I've seen what works and what doesn't.

I built my own co-writer first. Now I build them for founders, thought leaders, and professionals who want the same thing: a co-writer that knows their voice and their business.

No wrappers. No SaaS dependencies. Built directly in Claude Code — the same tool enterprises use. You own the files. Forever.

6+
Years in AI content
10k+
Newsletter subscribers
↑
Rising on Substack
How it works

Three steps. Two weeks.

01

Discovery call

We talk about your business, your workflows, and what you need your co-writer to do.

02

I build it

I create your custom co-writer — system instructions, agents, skills, context profiles. 1-2 weeks.

03

Handoff

I walk you through everything. You get training videos. You're ready to work with your co-writer.

FAQ

Questions

No. If you can use apps, you can use this. Training videos walk you through everything.

Your co-writer adapts. Built on Claude's native structure, so updates improve it rather than break it.

Training program: you learn to build it yourself. This service: I build it for you, you just use it.

Yes. You own all the files. Modify anything you want.

Book a strategy call or request a new agent or integration. Priced separately.

Ready for your
own co-writer?

Apply below. I'll review your answers and reach out within 24-48 hours.

Apply Now