📣 Marketing OS ⚙️ Content Engine 🔍 Campaign Intelligence ✓ 30-Day Money-Back

Claude Code for Marketers:
Build an AI Marketing OS
That Never Sleeps

Automate content creation, campaign analysis, SEO research, and competitor monitoring — all powered by Claude Code configured to know your brand, audience, and strategy inside out.

📖 20 min read 🗓 Updated April 2026 📣 For content marketers, demand gen & marketing teams 🔧 Includes full CLAUDE.md + brain/ template

Your Marketing Stack Has a Thinking Problem

You have more AI tools than ever. Jasper for content. ChatGPT for brainstorming. HubSpot AI for emails. Notion AI for docs. And yet somehow, you're still doing the same work over and over — re-explaining your brand to each tool, re-contextualizing every campaign brief, manually stitching insights from five different dashboards into a report your boss will read once.

The problem isn't that AI tools don't exist. The problem is that none of them remember anything. Every session starts from zero. They don't know your brand voice, your competitive positioning, or the campaign you just ran. They're powerful but amnesiac.

Claude Code solves this at the infrastructure level — not with another SaaS layer, but by letting you configure AI behavior once in a plain text file that loads automatically every session.

🗂️
Tool Sprawl Without Memory

5 AI tools, none of them know each other exists. Re-explain your brand in every tab, every day. Context dies when you close the window.

🔄
Context Reset Every Session

ChatGPT, Jasper, Copy.ai — they all start blank. You spend 20% of every AI session re-pasting your brand guidelines before you can do anything real.

🔍
Repetitive Research That Never Compounds

You do competitor research every month. The insights live in a Google Doc nobody reads. Nothing feeds back into your content strategy automatically.

📊
Manual Reporting That Takes All Day

End-of-month reports take 2 days to compile and format. You're an analyst when you should be a strategist. The AI tools don't help because they don't know what "good" looks like for your brand.

💡
The Root Cause

Every AI tool you're paying for treats you like a stranger. Claude Code with Brainfile treats you like a client it's worked with for years — because the context is baked into the configuration, not the chat window.

The Claude Code Marketing OS

The foundation of the Marketing OS is a CLAUDE.md file in your project root. Claude Code reads this file at the start of every session — before you type a single prompt. It's your brand briefing, your campaign tracker, your competitor roster, and your style guide all in one.

Here's what the Marketing OS CLAUDE.md looks like at full build-out:

CLAUDE.md Marketing OS
# Marketing OS — [Brand Name] # Claude reads this at the start of every session. # All content, analysis, and strategy should align with this context. ## Brand Identity Voice: Confident but approachable. Expert without being condescending. Tone: Direct, data-backed, occasionally witty. Never corporate fluff. Target Audience: B2B SaaS marketers at companies with 20-500 employees Core Value Prop: We make complex marketing data simple to act on Prohibited Phrases: "leverage", "synergy", "game-changing", "best-in-class" Approved CTAs: "See how it works", "Start free", "Get the report" Reading Level: Grade 10. Short sentences. Paragraphs max 3 lines. ## Active Campaigns Q2 Hero Campaign: "The Attribution Gap" — targeting demand gen leaders Goal: 500 MQLs by June 30 Budget: $45,000 (60% paid, 40% content/SEO) Current Performance: 247 MQLs as of Week 8 (on track) Key Channels: LinkedIn Ads, organic LinkedIn, email nurture (3-touch) ## Content Pillars Pillar 1 — Attribution: How to measure what actually drives revenue Pillar 2 — Demand Gen: Building pipeline without blowing budget Pillar 3 — Marketing Ops: Systems, tools, and workflows for lean teams Publishing Cadence: 2x blog/week, 5x LinkedIn/week, 1x email/week Evergreen Priority: SEO content ranks over time — always optimize for search ## Competitor Intelligence Primary Competitors: Competitor A (leader), Competitor B (low-price), Competitor C (niche) Our Positioning Against A: Easier to implement, half the price, better support Our Positioning Against B: More accurate data, real integrations, not just dashboards Our Weakness: Less brand recognition — compensate with case studies and ROI data Monitor Weekly: Their blog, G2 reviews, LinkedIn ads, pricing page changes ## SEO Strategy Domain Authority: 42 (growing ~2pts/quarter) Top Ranking Keywords: "marketing attribution software", "demand gen metrics" (positions 3-8) Content Gap Priority: Comparison pages, use-case pages, integration landing pages Internal Linking Rule: Every post links to at least 2 existing posts and 1 conversion page Meta Description Format: [Benefit]. [Feature]. [CTA]. Max 155 chars. ## Metrics That Matter Primary KPI: MQLs per month (target: 125) Secondary KPIs: Organic traffic, email open rate, LinkedIn engagement rate North Star: Pipeline influenced by marketing (not just sourced) Reporting Cadence: Weekly dashboard (Monday AM), monthly exec report (1st of month) Attribution Model: W-shaped (first touch 30%, lead create 30%, opp create 40%) ## Content Standards Blog Posts: 1,200-2,500 words, H2/H3 structure, data-backed claims only LinkedIn Posts: Under 220 chars before "see more", hook on line 1, insight on line 3 Email Subject Lines: Under 45 chars, no emoji in subject, one clear topic per email Always Include: At least one stat, one actionable takeaway, one CTA per piece Never Do: Numbered lists in LinkedIn posts, "I" as first word in emails
🧠
Why this works

Claude reads this entire file before your first prompt. When you ask for a LinkedIn post about your Q2 campaign, it already knows your voice, your prohibited phrases, your LinkedIn format rules, and which campaign is active. You don't paste context — Claude already has it.

brain/ Directory — Persistent Memory for Marketers

The brain/ directory extends your CLAUDE.md with detailed, evolving knowledge files. While CLAUDE.md holds your strategy, brain/ files hold the depth. Each file is plain Markdown that Claude reads on demand or when you reference it in a prompt.

your-marketing-project/ ├── CLAUDE.md # Brand OS — loaded every session ├── brain/ │ ├── brand-voice.md # Full tone + style guide, approved phrases, red flags │ ├── competitor-intel.md # What they're doing, gaps we exploit, ad examples │ ├── content-calendar.md # 90-day rolling editorial plan with brief status │ ├── seo-targets.md # Keywords, current rankings, content gap analysis │ ├── campaign-history.md # What worked, what didn't, what to repeat │ ├── audience-segments.md # Buyer personas, pain points, triggers, objections │ ├── channels.md # Platform rules, best posting times, format guides │ └── metrics.md # Current KPI baselines, benchmarks, targets ├── .claude/ │ └── rules/ │ ├── brand-voice.md # Enforced writing rules for all content │ ├── content-workflow.md # How to handle briefs, revisions, approvals │ ├── seo-rules.md # Keyword usage, heading structure, meta patterns │ ├── reporting-format.md # Report structure, data presentation standards │ └── email-rules.md # Subject line format, body rules, CTA placement └── campaigns/ ├── q2-attribution-brief.md # Current hero campaign full brief └── email-nurture-sequence.md # Active 5-email welcome flow

What each brain/ file contains

brain/brand-voice.md
Full tone guide with sentence structure rules, before/after rewrites showing correct vs. off-brand language, approved analogies, phrases to avoid, how to write for LinkedIn vs. email vs. blog, and 20+ example headlines in-voice.
brain/competitor-intel.md
Structured competitor profiles: their positioning, pricing tiers, top-ranked keywords, recent content angles, G2/Capterra review themes, LinkedIn ad messaging examples, product gaps you can exploit, and their ICP signals.
brain/content-calendar.md
Rolling 90-day editorial plan with topic, pillar alignment, target keyword, author, status (planned/briefed/written/published), and performance target. Claude updates this as you complete content.
brain/seo-targets.md
Primary keyword list with current rankings, monthly search volume, keyword difficulty, target content type (pillar/cluster/comparison), content assigned, and current gap analysis against top-ranking competitors.
brain/campaign-history.md
Structured post-mortems for every major campaign: goal vs. result, what drove over/underperformance, creative that worked, copy angles that flopped, audience segments that converted, lessons applied to future campaigns.
brain/audience-segments.md
Detailed buyer personas with job titles, company size, tech stack, buying triggers, primary pain points, common objections, preferred content format, and which channel they engage with at each stage of the funnel.
brain/channels.md
Platform-specific rules for LinkedIn, email, blog, X, YouTube, and podcasts. Best posting times, optimal content length, algorithm notes, format requirements, hashtag strategy, and engagement patterns by segment.
brain/metrics.md
Current baseline KPIs by channel, industry benchmarks for comparison, monthly targets, tracking methodology, and what "good" looks like for your specific business model and stage.

5 Use Cases with Live Code Examples

Here's how marketers actually use Claude Code day-to-day with the Marketing OS configured. These aren't hypotheticals — these are real workflows.

01
Content Creation at Scale
From campaign brief to 5 LinkedIn posts in one session, on-brand every time
.claude/rules/brand-voice.md Rules File
# Brand Voice Rules — Always Apply Writing Rules - Maximum sentence length: 18 words - Maximum paragraph length: 3 sentences - Use active voice. Never passive. - Lead with the outcome, not the feature - One idea per paragraph. No stuffing. LinkedIn Post Format - Line 1: Hook (bold claim, surprising stat, or direct challenge) - Lines 2-3: Context. Why this matters right now. - Lines 4-8: The insight. Short punchy lines. White space is signal. - Final line: One CTA or question. Never both. - No numbered lists. No bullet points. No em-dashes. Prohibited Words & Phrases leverage, synergy, game-changing, best-in-class, holistic, robust, scalable solution, cutting-edge, seamlessly integrates, empower your team, unlock potential, drive results Approved CTA Templates - "Here's how we think about it: [link]" - "See the full breakdown → [link]" - "Worth reading if you're seeing this too."
Example Session Prompt Marketing Workflow
# User types this in Claude Code terminal: Draft 5 LinkedIn posts for our Q2 "Attribution Gap" campaign. Target: demand gen leaders at 50-500 person SaaS companies. Core insight: most teams measure first-touch attribution and wonder why their reports don't match sales reality. Angle: empathetic, not preachy. They know the problem. We have the solution. Show don't tell. # Claude already knows: - Brand voice rules from .claude/rules/brand-voice.md - LinkedIn format (no bullets, hook on line 1, no em-dashes) - Prohibited phrases (leverage, synergy, game-changing...) - The campaign context from CLAUDE.md Active Campaigns - Target persona from brain/audience-segments.md - What worked in past campaigns from brain/campaign-history.md # Output: 5 ready-to-schedule posts, on-brand, no edits needed
02
SEO Research & Content Planning
Competitor gap analysis, keyword prioritization, and content brief generation in one flow
SEO Research Workflow Prompt Sequence
# Step 1: Load context and identify gaps Read brain/seo-targets.md and brain/competitor-intel.md. I'm going to paste the top 10 results for "marketing attribution software". Analyze where our competitors rank, what content type they use, and identify 5 keyword angles we haven't targeted yet. [paste SERP data] # Claude outputs: - Gap analysis: 5 keyword clusters competitors own, we don't - Content type recommendation per cluster (pillar vs. comparison vs. tool page) - Difficulty + opportunity score for each - Which of our existing content could be updated to target these # Step 2: Generate content brief for top priority Generate a full SEO content brief for the top opportunity. Include: target keyword, secondary keywords, H2/H3 structure, internal linking targets from our existing content, meta title + description variants, and estimated word count. Apply our content standards from CLAUDE.md. # Output: Complete brief ready for writer or to execute immediately # Then: Update brain/seo-targets.md with new targets and assignments
03
Campaign Analysis & Reporting
Transform raw performance data into exec-ready insights — without the 2-day compile job
Monthly Report Workflow Prompt Sequence
# Paste raw data from 3-4 sources at once Here's our March marketing performance data: LinkedIn Ads: [paste CSV or key metrics] Email: [paste stats from ESP] Organic: [paste GA4 summary] MQL breakdown by source: [paste CRM data] Using our reporting format from .claude/rules/reporting-format.md, synthesize this into our monthly exec report. Include: 1. Three-sentence executive summary (what happened, why, what next) 2. KPI vs. target table (use brain/metrics.md for targets) 3. What's working section — top 2-3 wins with why they worked 4. What needs attention — 2-3 issues with recommended action 5. Q2 outlook — what we're changing and expected impact # Claude outputs structured HTML or Markdown report # Apply brand voice from CLAUDE.md automatically # Takes 8 minutes instead of 2 days
.claude/rules/reporting-format.md Rules File
# Reporting Format Rules Executive Summary - Maximum 3 sentences. Never more. - Sentence 1: What happened (the headline number) - Sentence 2: Why it happened (primary driver) - Sentence 3: What we're doing about it (one concrete action) - Do not use jargon. Assume reader skims. Data Presentation - Always show % change vs. prior period AND vs. target - Color code: green = at/above target, red = below target - Never present vanity metrics without conversion context - Every chart needs a 1-line "so what" below it Recommendation Format - Problem: [what we observed] - Root cause: [why it's happening, with evidence] - Action: [specific change, who owns it, by when] - Expected outcome: [measurable result in 30-60 days]
04
Email Sequence Writing
Full 5-email welcome sequence with subject line variants and A/B logic built in
Email Sequence Prompt Marketing Workflow
# Write a 5-email welcome sequence for new trial signups. # Apply rules from .claude/rules/email-rules.md throughout. # Reference brain/audience-segments.md — primary persona: Demand Gen Manager. Write a 5-email welcome sequence for users who start a free trial. Send schedule: Day 0, Day 2, Day 5, Day 9, Day 14. For each email include: - Subject line (primary + A/B variant) - Preview text - Body (per our email format rules) - CTA (one per email, from approved CTA list in CLAUDE.md) - What triggers the next email if they don't open # Sequence architecture: Email 1 (Day 0): Welcome + the one thing to do in first 10 min Email 2 (Day 2): "Did you see this?" — key feature they likely missed Email 3 (Day 5): Customer story — someone exactly like them Email 4 (Day 9): Objection handler — most common "not sure yet" reason Email 5 (Day 14): Last chance framing + what they lose at trial end # Claude generates all 5 emails in one pass. # Subject line variants for A/B testing included automatically. # Every email respects: under 45-char subjects, no emoji, # one CTA per email, approved tone from brand voice rules.
.claude/rules/email-rules.md Rules File
# Email Writing Rules Subject Lines - Maximum 45 characters (preview on all devices) - No emoji in subject. Emoji in preview text = ok. - Never start with "We" — this is about them, not us - Use curiosity gaps, not clickbait: hint at value, don't bait - Always generate 2 variants for A/B testing (benefit vs. curiosity) Body Rules - Opening line: never "I hope this finds you well" or "Just checking in" - First sentence must be a specific claim or fact. No warmup fluff. - Max 200 words for nurture emails, 350 words for educational emails - One idea per email. Resist stuffing two topics. - P.S. line: optional, but always a soft CTA or human moment CTA Rules - One CTA per email. Never two. - CTA button text: verb-first, under 4 words ("See the data", "Start now") - Never use "Click here" or "Learn more" — too generic - Anchor inline text CTAs as the last sentence of a paragraph
05
Competitor Monitoring
Weekly intelligence gathering, positioning analysis, and threat detection — automated and structured
Competitor Intelligence Workflow Weekly Cadence
# Weekly competitor intelligence session (every Monday AM) Read brain/competitor-intel.md to refresh context on what we track. I'm going to paste competitor updates from this week. Analyze each and update our intelligence file. # Paste updates from: - Their blog (new posts, what topics they're targeting) - LinkedIn ad library screenshots (new messaging angles) - G2 reviews (new customer complaints or praise themes) - Pricing page changes (captured via manual check or tool) - Job postings (what they're building — hiring signals) For each competitor, identify: 1. New messaging angles they're testing this week 2. Keywords they're targeting that we're not (opportunity) 3. Customer pain points from their negative reviews (we can win on) 4. Any pricing or product moves that require our response 5. Threat level: high/medium/low with 1-sentence reasoning Then rewrite the "Current Competitive Threat Summary" section of brain/competitor-intel.md with today's date and updated context. # Output: Updated intel file + action items for marketing team # What used to take 1 day/month now runs in 30 minutes weekly # Compounding advantage: each week's intel builds on last week's

See the Full Marketing OS in Action

The Brainfile Marketing OS includes the complete CLAUDE.md, all 8 brain/ files pre-built, and 5 rules files — ready to customize for your brand in under 15 minutes.

Monthly subscription Monthly updates 30-day money-back guarantee

Before vs. After Claude Code

Time is the clearest measure. Here's what marketers report after building out their Marketing OS:

Marketing Task Before Claude Code After Claude Code Time Saved
Writing a 1,500-word blog post 4 hours 45 minutes 3h 15m
Monthly performance report 2 days 2 hours 14 hours
SEO keyword research + brief 3 hours 30 minutes 2h 30m
5-email welcome sequence 1 week 1 day 4 days
Competitor analysis 1 day/month 30 min/week Automated
LinkedIn content calendar (1 month) Half day 20 minutes 3+ hours
Campaign brief from strategy to draft 2-3 hours 25 minutes 2h+
Repurpose blog post to 3 formats 90 minutes 12 minutes 78 minutes
New landing page copy 1-2 days 90 minutes 6+ hours
Re-briefing AI on brand every session 20 min every session 0 minutes 100% eliminated
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The compounding effect

These gains compound. When you stop spending time re-contextualizing and re-researching, you spend it building. Marketers using the OS report producing 3-4x more content without increasing headcount — and the quality improves because Claude remembers what worked.

The .claude/rules/ System for Marketing Teams

The .claude/rules/ directory contains files that Claude loads for every single interaction in your project — not just when you reference them. They're enforced rules, not optional context. Here are three real examples from the Marketing OS package:

1. brand-voice.md — Your Writing Constitution

.claude/rules/brand-voice.md Always Loaded
# Brand Voice Rules — Enforced for ALL Content Tone Principles - Sound like a smart friend who works in marketing, not a brand account - Confident, not cocky. We know our stuff but don't need to prove it. - Never explain what the reader already knows. Give them the next layer. - When in doubt, be more direct. Cut the wind-up. Sentence Structure Rules - Lead with the verb or the outcome. Not "In order to..." or "When it comes to..." - Avoid nominalizations: "provide support" → "support", "make improvements" → "improve" - One idea per sentence for tactical/how-to content - Vary sentence length: short punchy sentences mixed with longer setup sentences Prohibited Patterns ❌ "In today's fast-paced digital landscape..." ❌ "It goes without saying that..." ❌ "At the end of the day..." / "The bottom line is..." ❌ Any metaphor involving journeys, rockets, or battles ❌ Passive voice in headlines ("mistakes were made" → "we made mistakes") ❌ Starting 3 consecutive sentences with the same word Approved Opening Patterns (by format) Blog: Lead with a problem stat or a contrarian claim LinkedIn: Open with a line that makes them stop scrolling Email: Start with a specific observation about their situation Report: Lead with the headline number, not the methodology Before / After Examples ❌ "Leverage our cutting-edge platform to unlock your team's potential" ✅ "Stop rewriting reports. Our platform does it in 8 minutes." ❌ "In order to maximize campaign performance, it is important to..." ✅ "Better campaign performance starts with one change:"

2. content-workflow.md — How Briefs Become Published Content

.claude/rules/content-workflow.md Always Loaded
# Content Workflow Rules When I Give You a Content Brief 1. Read the brief carefully. Identify: audience, goal, angle, format 2. Check brain/content-calendar.md for related content to link to 3. Check brain/seo-targets.md for the target keyword and secondary keywords 4. Generate outline first. Wait for my approval before writing full draft. 5. Draft the full piece applying all brand-voice.md rules 6. After draft: provide self-critique (what's weakest and why) When I Ask for Revisions - Apply the specific feedback. Don't revise things I didn't mention. - If my revision contradicts a brand voice rule, flag it before revising - Show the changed section clearly, not the entire piece again Repurposing Rules When repurposing a long-form piece to short-form: - Extract the single most actionable insight, not a summary - LinkedIn post ≠ blog excerpt. Rewrite for the format. - Email version: lead with the business impact, not the content - Never use the same opening line across formats Approval Signals - If I say "ship it" or "looks good" → content is final, update calendar - If I say "one more pass" → apply light polish only, don't restructure - If I paste feedback without a prompt → treat as revision instructions

3. seo-rules.md — Search-Optimized by Default

.claude/rules/seo-rules.md Always Loaded
# SEO Rules — Apply to All Blog Content Keyword Usage - Target keyword in: H1, first 100 words, one H2, meta description, alt text - Secondary keywords: distribute naturally across H2s and body - Keyword density target: 1-2% (no stuffing) - Use semantic variants — don't repeat exact phrase more than 3x Heading Hierarchy Rules - H1: One per page. Includes target keyword. Under 65 characters. - H2s: Every 300-400 words. Keyword variations or related terms. - H3s: Supporting points under H2s only. Never standalone. - No H4s unless the piece is a deep technical guide (2,500+ words) Meta Description Format Pattern: [Primary benefit]. [What they'll learn/get]. [CTA]. Length: 145-155 characters exactly Always include: target keyword, one specific outcome, action verb Never include: "In this article" or "Click here to learn" Internal Linking Rules - Minimum 2 internal links per post to existing content - Minimum 1 link to a conversion page (demo, trial, product page) - Anchor text: descriptive, keyword-adjacent, never "click here" - Check brain/content-calendar.md for content IDs to link to Featured Snippet Optimization - For "how to" and "what is" queries: include a direct 40-60 word answer in a paragraph immediately after the relevant H2 - For list-type queries: use ordered or unordered lists with 6-8 items - For comparison queries: include a structured table near the top

Pricing vs. Jasper, Copy.ai & HubSpot AI

The Brainfile Marketing OS costs $149/mo. Most of its direct competitors charge that per month — and none of them give you persistent memory or a configurable brand OS.

Tool Cost/Year What It Does What's Missing
Jasper $588/yr AI content generation, templates No persistent memory. Re-explain brand every session. Generic output.
Copy.ai $420/yr Workflow templates, content drafting Template-based only. Can't adapt to your actual brand context.
HubSpot AI $800+/yr CRM-tied content tools, email AI Locked to HubSpot. Limited customization. Expensive for content volume.
Writer.com $1,080/yr Brand governance + AI content Enterprise pricing. Requires IT setup. No terminal-native workflow.
Brainfile Marketer OS $149/mo Full Marketing OS: CLAUDE.md + brain/ + rules files + 50+ prompts Nothing. Bring your own Claude Pro ($20/mo). Active with subscription.
💡
Monthly subscription. Active with subscription.

$149/mo is your monthly subscription. You pay for Claude Pro separately ($20/month via Anthropic) — that's the model that does the work. Brainfile provides the configuration layer that makes Claude behave like a dedicated marketing AI for your brand. SaaS subscription. Pay monthly. Cancel anytime.

Full Package Contents

Everything you need to go from "Claude Code installed" to "AI is writing on-brand content" in under 15 minutes.

500+
Lines in the CLAUDE.md Marketing OS template
8
Pre-built brain/ knowledge files ready to customize
5
Enforced .claude/rules/ files for consistent output
50+
Battle-tested prompts for every marketing use case
CLAUDE.md (Marketing OS)
500+ line template covering Brand Identity, Active Campaigns, Content Pillars, Competitor Intelligence, SEO Strategy, Metrics, Content Standards, and Platform-specific rules. Fully commented and customizable.
brain/ directory (8 files)
Pre-built Markdown templates for brand-voice, competitor-intel, content-calendar, seo-targets, campaign-history, audience-segments, channels, and metrics. Each includes example content so you know exactly what to fill in.
.claude/rules/ (5 rules files)
brand-voice.md, content-workflow.md, seo-rules.md, reporting-format.md, and email-rules.md. These load automatically for every session and enforce consistent output without you having to re-explain anything.
50+ Battle-Tested Prompts
Organized by use case: content creation, SEO research, campaign analysis, email sequences, competitor monitoring, social media, reporting, and brainstorming. Copy-paste ready, optimized for the Marketing OS context.
Quick-Start Guide (15 Minutes to First Output)
Step-by-step setup: install Claude Code, place files, fill in your brand details, run your first prompt. Annotated with what each section does and why. Most marketers produce real content within the first session.
Monthly Updates
Claude Code is actively evolving — new hooks, new slash commands, new configuration patterns. Every update to the Marketing OS package is included at no extra cost. Your OS never goes stale.

FAQ: 8 Questions Marketers Ask

Do I need to know how to code to use the Brainfile Marketing OS? +
No coding required. Claude Code runs from your terminal, but you interact with it entirely through plain English prompts. The Marketing OS includes a pre-built CLAUDE.md and brain/ directory — you fill in your brand details with any text editor, then start prompting in plain English. Most marketers are producing content within 15 minutes of setup. If you can write a Google Doc, you can use this.
Which Claude subscription do I need? +
You need a Claude Pro subscription ($20/month from Anthropic). Claude Code is included in Claude Pro at no extra charge. You bring your own Claude subscription — Brainfile provides the CLAUDE.md framework, brain/ directory structure, and rules files that make Claude behave like a dedicated marketing AI for your brand. The $149/mo is your monthly subscription to Brainfile. The $20/month goes directly to Anthropic for Claude access.
Can I use the Marketing OS for client work? +
Yes. The Marketing OS is designed to be duplicated per client. Each client gets their own project folder with their own CLAUDE.md, brand voice rules, competitor intel, and campaign context. Claude Code keeps each client's context completely separate — you just open a different folder for each client. Many freelancers and agencies use Brainfile to service 5-10 clients with the same underlying workflow, dramatically increasing their capacity without increasing hours.
Does this work for both B2B and B2C marketing? +
Yes. The CLAUDE.md template includes configuration sections for both audience models. For B2B, Claude focuses on thought leadership, LinkedIn content, long buying cycles, multi-stakeholder messaging, and pipeline-oriented KPIs. For B2C, it emphasizes emotional hooks, short-form content, conversion copy, social-first strategies, and revenue attribution. The brain/audience-segments.md file lets you define exactly which model applies and which personas matter most to your business.
How is this different from ChatGPT for marketing? +
ChatGPT has no persistent memory. Every session starts blank — it doesn't know your brand voice, your competitor landscape, your current campaigns, or what LinkedIn format you use. Claude Code with Brainfile reads your CLAUDE.md and rules files at the start of every session, so Claude always has full context before you type a single word. It's the difference between briefing a freelancer every single day versus having a full-time team member who knows your brand cold. The quality gap is enormous, and the time saving on re-contextualization alone pays for the package within the first week.
Can I customize the templates for my brand? +
Everything is fully customizable. The CLAUDE.md is a plain Markdown text file — edit it in VS Code, Notepad, Obsidian, or any text editor. Add your brand voice guidelines, prohibited phrases, CTA templates, competitor names, target keywords, current campaign details. The brain/ files work the same way. Claude reads all of it automatically. The more specific you make the context, the more on-brand and useful the output. The template is a starting point — the real value compounds as you add your own context over time.
What if I already use HubSpot, Jasper, or other marketing tools? +
Claude Code works alongside your existing stack — it's not a replacement for your CRM, ESP, or publishing tools. Marketers use Claude Code to generate content and analysis, then paste the output into HubSpot, Mailchimp, Notion, or wherever they publish. Think of it as an always-on content and strategy brain that feeds everything else. You can also add workflow integration notes to your CLAUDE.md (for example: "Format email output as HTML for paste into HubSpot") so Claude automatically formats output to match your tools.
What does "monthly updates" mean? +
When you purchase the Brainfile Marketing OS, you get all future updates to the CLAUDE.md template, brain/ files, and rules files at no extra cost. As Claude Code evolves — new hooks system, new slash commands, new configuration patterns, new best practices — we update the package and you get access. Claude Code is a fast-moving product and the configuration patterns that work best change every few months. Monthly updates mean your Marketing OS never goes stale, and you always have the most effective configuration available.

Stop Switching Tabs.
Start Actually Creating.

You're spending 30-40% of your marketing time on work AI should be doing. The Marketing OS gives Claude the context it needs to work like a team member — not a stranger who needs briefing every day.

$149/mo
Jasper costs $588/yr
Monthly subscription
Includes all future updates
Add your own Claude Pro ($20/mo)
30-day money-back guarantee Instant download 1,000+ marketers using Brainfile Works with Claude Pro ($20/mo from Anthropic)