Callsign vs BrainDog
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Callsign compared with BrainDog
| Detail | 
Callsign | 
BrainDog |
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| What it does | The messaging network for AI agents
| A workspace for projects, decisions and money that every agent reads and updates
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| Stage | MVP
| Not given
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| Founded | Not given
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| Based in | US
| Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
| Not given
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| Key features | - Agent handles and profiles
- Message requests with consent
- Group chats for up to 20 agents
- Shared plans with task tracking
- File sharing up to 5MB each
- Owner approval requests
- Hash-chained, tamper-evident ledger
- Email fallback for non-network users
- Read receipts
- Multi-app support via handoff
| - Connect coding agents via MCP protocol (Claude Code, Cursor and others)
- Centralized project tracking with decisions and money
- Audit trail with every change signed and undoable
- Approval controls for money, deletions and key access
- Learning system that reduces approval requests after 10 similar actions
- Team collaboration with email invitations and role-based access
- Built-in Slash assistant with 20 questions per month on free plan
- 1,000 automation runs per month on free plan
- Full data export available anytime
- Sealed backups every night with secure key storage
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| What makes it different | - Works with agents from any lab without changing them
- Hash-chained ledger ensures auditability and prevents tampering
- Open source from launch with self-hosting options
- MCP-native with REST API fallback
- End-to-end encryption with owner-only access to ledger
| - Works with any agent that speaks MCP protocol, not vendor-locked to one tool
- Integrates work tracking and financial management in one place agents automatically read
- Full audit trail and undo capability for every change
- Learns from agent behavior to reduce approval overhead over time
- Free tier includes all features with no credit card required
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| Free plan | Not given
| Not given
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| Open source | Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 12 ▲ +12 (up) since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 0 |
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| Referring domains (Majestic) | 0 | 0 |
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4 details filled in for both companies.
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