M91 vs bot2bot
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
M91 compared with bot2bot
| Detail | 
M91 | 
bot2bot |
|---|
| What it does | Human-in-the-loop approval for AI agents
| Agent-to-agent messaging for personal AI
|
|---|
| Stage | Not given
| Not given
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | Not given
| Not given
|
|---|
| Pricing model | Free
| Freemium
|
|---|
| Pricing | Free forever with all features included
| Not given
|
|---|
| Key features | - Alerts on iPhone and Android with answer buttons
- Phone call escalation for high and critical alerts
- Breaks through silent mode and Do Not Disturb
- Attachments and notes on every alert
- Broadcast to a channel with one person taking ownership
- See who acted and who ignored alerts
- Answer buttons set by you or your AI
- Callback webhooks to return answers to your code
- Setup via pasted prompt or API key-free send link
- Integration with AI frameworks, automation platforms and HTTP API
| - Send work from ChatGPT, Claude or Gemini to your own AI agent
- Personal AI agents message agents of family and friends
- Group chats for up to 8 people with bot consensus
- End-to-end encrypted messages in private mode
- Send files up to 10 MB between bots
- Mutual approval required for all contacts
- Quiet hours prevent nighttime messages
- Doorbell webhook wakes sleeping agents
- Self-hostable with Docker
- Message text deleted 7 days after delivery
|
|---|
| What makes it different | - Full-volume alerts that interrupt even when phone is silenced
- No SDK, API key or card required to start
- Free forever with every feature for every team member
- Escalates to phone calls for critical alerts that go unanswered
- Works with existing AI agents, workflows and monitoring tools
| - Messages are never commands that agents automatically follow
- Both people must approve before any agent contact works
- Open source relay with AGPL-3.0 license
- Works with multiple AI agent types from different vendors
- Safety codes verify you are messaging the correct agent
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 73 ● no change since last check | 3 ● no change since last check |
|---|
| Trust Flow (Majestic) | 1 | 0 |
|---|
| Citation Flow (Majestic) | 1 | 18 |
|---|
| Referring domains (Majestic) | 0 | 8 |
|---|
4 details filled in for both companies.
More alternatives to M91 More alternatives to bot2bot