Planning a weekend, researching a purchase, or testing an idea? Write your question once, choose your agents, and compare their suggestions in one window. Follow up with everyone or just one agent. Your comparisons stay saved so you can return to them later.
Actual Messages comparison captured from an earlier app version. The replies are illustrative sample text.
Features
- App Agents and Messages Agents together. Compare installed Mac assistants and the agents you already text. Optional websites and CLI conversations can join the same blast.
- Prompts and replies in one place. See your outgoing message, submission status, and each agent’s reply in msgblast. Follow-ups stay with the original conversation.
- Keep going while agents are busy. Responding agents show Busy and are unavailable for another selection. Send to ready agents without manually deselecting the busy ones; their saved choices stay intact.
- Saved comparisons and drafts. Reopen a comparison from the sidebar, continue its conversations, or start a New Blast without losing an unsent prompt. Replies that arrive later stay attached to the original comparison.
- Simpler setup. Review access, choose agents, and connect them. Setup remembers progress across permission restarts, and the same permission controls and App Agent setup are available in Settings.
- Your accounts. Use the account signed in to each native app, add named website accounts for work and personal use, or enable Codex CLI and Claude Code separately.
- Rich Messages. Send photos and files to Messages Agents and read attachment previews, link cards, and reactions. Generate a comparison report from their replies.
- Quick access and discovery. Start a blast from the menu bar or a configurable keyboard shortcut. Find more assistants in Discover, and revisit changes from the sidebar’s What’s New panel.
- Feedback you control. Review eligible crash summaries before choosing to send one privately to the msgblast team. Manage optional usage and app-health sharing in Settings.
Supported agents
App Agents
Install and sign in to the native Mac app, then enable it in onboarding or Settings → App Agents. Your service’s account, subscription, and usage limits still apply.
| Agent | Conversation in the native app |
|---|
| ChatGPT | A dedicated ChatGPT chat for each comparison. |
| Dots | Your ongoing Your dot conversation inside the ChatGPT app. A Dot must already be set up and available in your account; no separate Dots app is needed. |
| Claude | A dedicated Claude chat for each comparison. |
| Muse | A dedicated Muse side chat for each comparison. |
| Grok Bot | Choose a bot in msgblast. Prompts continue that bot’s existing conversation across comparisons. Separate from the Grok website. |
| Wabi | A dedicated Wabi AI chat for each comparison. |
Choose ChatGPT or Dots, rather than both in the same blast: they share the ChatGPT app. Dots availability depends on the signed-in account. Native Gemini is deferred and cannot be connected in this build.
msgblast opens a closed app when you explicitly connect or start a conversation. Apps can remain on other macOS desktops. Some apps briefly come forward for message entry and submission; focus returns to msgblast while it collects the reply. Existing drafts and active responses are preserved. Connection checks never send a test prompt.
See desktop app conversations for setup, conversation behavior, and compatibility limits.
Messages Agents
Connect existing one-to-one iMessage conversations with assistants such as Instinct, Fo, Szn, Poke, and tinyNature. With Messages permissions enabled, eligible existing agent conversations are added automatically during setup; deselect any you don’t want. Discover helps you find more agents.
Messages Agents support photos and files. Attachments are available for a shared blast when only Messages Agents are selected; blasts that include apps, websites, or CLIs use text.
Websites and other connections
| Connection | Agents | Availability and behavior |
|---|
| Optional websites | Muse Web, ChatGPT Web, Claude Web, Grok Web, Dots Web | Enable in Settings → Web agents. These alternatives are hidden from onboarding. Website sign-ins and conversations are separate from native app accounts. Dots continues the account’s dot conversation. |
| Other websites | rabbit OS3 Web, Hark Web | rabbit OS3 continues one account-wide conversation across comparisons. Hark supports manual chat in its own pane; it does not receive shared blasts. |
| Optional CLI conversations | Codex CLI, Claude Code | Enable in Settings → Your local accounts. Use installed, signed-in CLIs with their own saved conversations and configured capabilities. |
| Optional Grok Bot webhook | Grok Bot | A separate connection from both the native Grok Bot app and Grok Web. Configure a bot’s routine and reply connection in Settings. Webhook setup and limits. |
For Muse Web, ChatGPT Web, Claude Web, and Grok Web, add separate named accounts in Settings or duplicate an agent with a shared sign-in. Each agent keeps its own drafts and conversations. Native apps use the account currently selected in that app. See multiple accounts.
CLI chats respect the installed CLI’s permissions, skills, tools, and connectors. Interactive approvals may require Terminal; msgblast does not bypass them. Claude Code requires 2.1.259 or later. Website sign-in does not sign in a CLI. See CLI accounts and conversations.
This is the beginning of the README. Read the rest at the original. Read the full README ↗
