Tell Claude.
Just once.
Claude has a memory — but it's the wrong one. It hoards everything you type instead of what matters, and it's locked to a single login: one model, one email, one profile. Your work isn't — it runs across clients, projects and every account you sign into. AquaBrain is one memory that belongs to you, not your accounts. Your Brain. Your Digital Twin.
Capture the decisions, context and your voice once — and Claude uses it in every conversation.
Capture thoughts at the end of a conversation. Add text and documents to your Brain from the web and iOS app, scrape webpages with the Chrome extension, or save threads with the Slack app.
Built for people who
already live inside Claude.
- You want Claude's output to feel like it thinks and writes like you.
- You feel the pain of starting from zero every morning, pasting in context.
- You want a thinking partner — not a sycophantic robot.
Consultants
One Brain, every client. A Lens per engagement, so context never bleeds and you never confuse Acme's pricing with Beta's roadmap. Generate content in your voice and the project's context.
Writers, bloggers & creators
Your voice, your themes, your best work — saved once, recalled on demand, separated by project or theme. The AI stops writing in a voice and starts writing in yours. The drafts need an edit, not a rewrite.
Founders
Product, customers, fundraising, hiring — and the same company context pasted into Claude five times a day. Your Brain knows your pitch and your last three decisions. So does Claude, from the first message.
Three steps. One Brain.
Up and running.
Connect your Brain.
- Register at
app.aquabrain.ai - Install the MCP server in Claude —
app.aquabrain.ai/connect - Add a few Lenses: projects, clients, interests
Add 2–3 thoughts.
- From a past Claude chat:
Save to AquaBrain [LENS] - Upload a document at
app.aquabrain.ai/capture - Paste text from another AI tool and save it as a thought
Let Claude use them.
- Start any request with
Use AquaBrain [LENS] - Claude pulls the right thoughts into the conversation
- No pasting, no re-explaining — it already knows
One Brain.
Accessed by Claude.
Multiple capture surfaces, one memory underneath — all available to Claude.
Thoughts, not documents.
Your thoughts are stored as small thought fragments in a graph database, so they can be recalled efficiently in different contexts. Lenses add categorisation. Nothing is dumped in as a full document that blows up the context window and confuses the model.
Where the magic happens.
Install the MCP server in Claude (or ChatGPT Pro) and it knows how to capture and recall thoughts from your conversation. Behind the scenes, AquaBrain's AI engine decides how to break things into thought fragments for future recall.
Built-in slash commands.
AquaBrain ships with skills it uses to save (/aq-save) and use (/aq-extract) thoughts. There are more you can call directly — /aq-lens creates a Lens, and /aq-tradeoffs synthesises the benefits, costs, risks and unknowns around a decision, with an honest take.
Make it your own.
Create your own skills, or copy a built-in one and change it — /aq-skill helps you build them. This is how you extend AquaBrain: for example /ig-blog for a specific blog structure, or /ig-compare to compare products (the prefix is just your initials).
Text & documents.
Capture thoughts from text or documents — including conversations in LLMs that don't support MCP, or bulk onboarding by uploading files. It's also where you maintain your Lenses and skills.
Scrape the web.
See something worth capturing? Scrape it and store it straight to your Brain as a thought — without breaking your flow.
Save a thread.
Working in Slack? Save a thread to your Brain with the /aq slash command. Spin up a personal app for your workspace in about five minutes — clear step-by-step instructions included.
Simple. Personal.
Yours forever.
Capture is free. Recall from your AI is paid — that's the part that earns its keep.
- Start capturing thoughts and using them
- Trial starts when you first use a thought
- Export everything as a single Markdown file, anytime
- ×After 30 days: no new thought captures
- ×One conversation per day with saved thoughts
- Everything in Free
- MCP recall in Claude, ChatGPT, Cursor, Claude Code
- Slack capture — reactions + slash commands
- Nine built-in Skills for structured capture & analysis
- Bulk file import — up to 25 files per job
- Bring your own OpenRouter key
- Everything in Personal
- Saves $11 vs paying monthly
- Priority support
- Locked-in pricing for the life of your subscription
Start with a free 30-day trial — no credit card. Upgrade to Personal any time; your rate stays locked in for the life of your subscription.
Tell Claude.
Just once.
If you're re-explaining yourself to Claude every week, this is for you.
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