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Vellum

What it is

Vellum is a personal AI assistant designed specifically for macOS. It lives on the user's computer and integrates deeply with local files, email, calendar, and other desktop applications. It aims to be a "proactive" assistant that learns user patterns and takes action on their behalf.

What problem it solves

It bridges the gap between conversational AI and practical task execution. Unlike web-based chat tools, Vellum can see the user's screen (with permission), manage local files, and interact with other macOS apps directly to automate repetitive workflows.

Where it fits in the stack

Category: Automation & Orchestration / Personal AI Assistant. It is a local agent that orchestrates various tools and services.

Typical use cases

  • Inbox Management: Automatically triaging and drafting replies to emails in Gmail.
  • Backlog Grooming: Auto-labeling and triaging GitHub issues or Linear tasks based on team rules.
  • Meeting Preparation: Summarizing Slack conversations and documents to provide a briefing before a meeting.
  • Local Automation: Cleaning up a cluttered desktop or organizing local files based on natural language commands.

Strengths

  • Deep macOS Integration: Leverages accessibility and screen recording for "computer use" capabilities.
  • Privacy-First Architecture: Stores credentials in macOS Keychain; memories and workspace data remain local.
  • Proactive Intelligence: Designed to act before being asked by noticing patterns in user behavior.
  • Extensible: Ships with 60+ built-in skills and supports custom skill development.

Limitations

  • Platform Restricted: Currently only available for macOS (Apple Silicon and Intel).
  • Cost: Uses a prepaid credit system for AI model usage.
  • Resource Intensive: Running a deep-integration assistant can impact system performance on older hardware.

When to use it

  • If you are a macOS user looking for a deeply integrated personal AI agent.
  • If you want to automate routine digital tasks like email triage or issue management.
  • If you value local data storage and privacy in your AI interactions.

When not to use it

  • If you are on Windows or Linux.
  • If you prefer a fully open-source, community-managed agent like OpenClaw.

Sources / references

Contribution Metadata

  • Last reviewed: 2026-05-11
  • Confidence: high