Superhuman Power Tools

A Chrome extension that adds productivity features to Superhuman.

Features

1. Auto-Clicker (automatic)

Automatically dismisses "SEND ANYWAY" and "SCHEDULE ANYWAY" confirmation popups so you never have to click them manually.

2. Gmail Filter Creation (Alt+G)

Press Alt+G on any email to jump to Gmail with a pre-populated search for creating filters based on the sender and subject.

3. Comment Popup Blocker (automatic)

Hides the annoying "Comment & Share Conversation" popup that appears when hovering over certain areas.

4. Copy Email Button

Adds a Copy button near the email header. Copies both HTML (for rich text editors) and plain text formats.

5. AI Email Summarization

Adds a Summarize button that uses Claude AI to analyze emails and provide:

• TL;DR: 2-4 bullet point summary
• Key Takeaways: Comprehensive analysis including response requirements, context, action items, and questions to consider

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Installation

1. Download or clone this repository
2. Open Chrome and go to chrome://extensions/
3. Enable Developer mode (toggle in top-right corner)
4. Click Load unpacked
5. Select the folder containing this extension

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Setup: AI Summarization

The Summarize feature requires an Anthropic API key. Follow these steps:

Step 1: Get an API Key

1. Go to console.anthropic.com
2. Sign up or log in
3. Navigate to API Keys
4. Create a new API key
5. Copy the key (it starts with sk-ant-)

Step 2: Add the Key to the Extension

1. Open Superhuman in Chrome
2. Open Chrome DevTools:
   • Windows/Linux: Press F12 or Ctrl+Shift+I
   • Mac: Press Cmd+Option+I
3. Click the Console tab
4. Paste this command, replacing sk-ant-your-key-here with your actual key:

chrome.storage.local.set({ anthropicApiKey: 'sk-ant-your-key-here' })

5. Press Enter
6. You should see undefined — this means it worked
7. Close DevTools

Step 3: Test It

1. Open any email in Superhuman
2. Look for the Summarize button near the subject line (next to Copy)
3. Click it to generate an AI summary

Troubleshooting

"API key not configured" error:

• Make sure you ran the command on a Superhuman tab
• The key must start with sk-ant-
• Try the setup again

To check if your key is saved:

chrome.storage.local.get('anthropicApiKey', result => console.log(result.anthropicApiKey ? 'Key is set' : 'No key found'))

To remove your key:

chrome.storage.local.remove('anthropicApiKey')

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Usage Guide

Summarize Button

1. Open an email in Superhuman
2. Click the Summarize button (next to Copy button)
3. A sidebar opens with two tabs:
   • TL;DR: Quick 2-4 bullet summary
   • Key Takeaways: Detailed analysis with response requirements, context, action items
4. Content streams in real-time as the AI generates it
5. Summaries are cached — clicking Summarize again reopens without regenerating
6. Press Escape or click × to close

Copy Button

1. Open an email in Superhuman
2. Click the Copy button
3. Paste anywhere — HTML formatting is preserved in rich text editors like Word or Google Docs

Gmail Filter (Alt+G)

1. Open an email in Superhuman
2. Press Alt+G (or click the toolbar icon)
3. Gmail opens with search pre-filled with sender/subject
4. Click Show search options → Create filter to finish

Comment Popup Blocker

No action required. The popup is automatically hidden.

Required Superhuman setting: Enable "Hide comment bar" in Superhuman settings:

1. Press Cmd+K (Mac) or Ctrl+K (Windows)
2. Type "Settings" and select it
3. Go to Advanced
4. Enable "Hide comment bar"

Auto-Clicker

No action required. Confirmation popups are automatically dismissed within ~200ms.

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Privacy & Cost

Privacy

• Local processing: All features except AI Summarization work entirely locally
• AI Summarization: Email content is sent to Anthropic's API for processing
• No tracking: This extension does not collect or transmit any analytics
• API key storage: Your key is stored locally in Chrome's extension storage

Cost

AI Summarization uses Claude 3.5 Haiku. Typical costs:

• ~$0.01-0.03 per email summary
• Costs are displayed in the sidebar footer

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Debug API

Open DevTools console on any Superhuman page:

Function	Returns
getExtensionErrorReports()	Last 10 tracked JS errors
getExtensionEnvironment()	Current page state and diagnostics
checkCurrentFocus()	Logs focus state

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Architecture

mail.superhuman.com                              mail.google.com
┌────────────────────────────────┐              ┌──────────────────┐
│ content.js                     │              │ gmail-content.js │
│                                │              │                  │
│ • Auto-Clicker (polls 150ms)   │              │ Reads stored     │
│ • Comment Popup Blocker (CSS)  │              │ filter data,     │
│ • Copy Button                  │              │ navigates Gmail  │
│ • Summarize Button + Sidebar   │              │                  │
│ • Filter Data Extraction       │              │                  │
└────────────────────────────────┘              └──────────────────┘
         │                                               ▲
         │ messages                                      │
         ▼                                               │
┌────────────────────────────────────────────────────────┴───────┐
│ background.js (service worker)                                 │
│                                                                │
│ • Orchestrates filter creation flow                            │
│ • Streams AI summaries from Anthropic API                      │
│ • Manages chrome.storage for data passing                      │
└────────────────────────────────────────────────────────────────┘

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Project Structure

├── manifest.json        # Extension config (Manifest V3)
├── background.js        # Service worker — filter creation + AI streaming
├── content.js           # Superhuman — all 5 features
├── gmail-content.js     # Gmail — filter search navigation
├── tests/
│   └── content.test.js  # Unit tests
└── icons/
    ├── icon16.png
    ├── icon48.png
    └── icon128.png

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Permissions

Permission	Why
activeTab	Send messages to active Superhuman tab
storage	Store API key and pass data between scripts
host_permissions	Connect to Anthropic API for summarization

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Development

npm install    # Install test dependencies
npm test       # Run unit tests

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License

MIT