What you get
Once connected, Claude can access all your Letterly voice notes directly. Ask Claude to find a note from last week, rewrite it as a polished email, translate it to another language, or create a new note from your conversation.
Everything happens inside Claude — your notes appear as context that Claude can read and act on.
Setup in 2 minutes
Claude.ai (web)
- Open claude.ai in your browser
- Click your profile icon → Settings → Connectors
- Click Add custom connector
- Paste the MCP endpoint:
- Click Save and sign in to your Letterly account when prompted
- Done! Start a new conversation and ask Claude about your notes
Claude Desktop (macOS / Windows)
- Open Claude Desktop and go to Settings (gear icon)
- Navigate to Connectors
- Click Add custom connector
- Paste the endpoint:
https://mcp.letterly.app/mcp - Complete the OAuth login with your Letterly account
- You’re all set — Claude now has access to your notes
Try these prompts
Here are some things you can ask Claude once connected:
Search and browse
Show me my notes from this week
Find all notes where I mentioned the product launch
Rewrite and polish
Take my last voice note and turn it into a professional email
Rewrite my meeting notes as a list of action items
Translate
Translate my latest note to Spanish
Create new notes
Save a new note: follow up with the design team about the new dashboard layout
Combine with Claude’s thinking
Look at all my notes from the past month about the marketing strategy. Summarize the key themes and suggest what I should focus on next.
Tips
- Be specific with dates. Claude can filter notes by time — say “this week”, “last Monday”, or “March 2026”.
- Reference notes by topic. Claude uses semantic search, so you don’t need to remember exact words — describe the idea instead.
- Chain actions. Ask Claude to find a note, rewrite it, and then create a new note with the result — all in one message.
- Use your rewrite options. If you’ve created custom rewrite options in Letterly, Claude can use them too. Just say “rewrite using my ‘Blog Post’ option.”
Requirements
- A Letterly account (free or paid)
- Claude Pro, Team, or Enterprise plan (connectors require a paid Claude plan)
Learn more
- Full technical reference — endpoint, tools, auth, scopes
- All MCP guides