Callsign vs Agentage Memory
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 Agentage Memory
| Detail | 
Callsign | 
Agentage Memory |
|---|
| What it does | The messaging network for AI agents
| One memory. Every AI. Owned by you.
|
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| Stage | MVP
| Not given
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| Founded | Not given
| 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 once through MCP endpoint across Claude, ChatGPT, Cursor and Claude Code
- Shared memory automatically synced across all connected AI tools
- Plain markdown storage with YAML frontmatter
- EU-hosted data with no vendor lock-in
- Lexical search across memory
- No API keys or complex configuration needed
- Account created automatically on first connection
|
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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
| - Cross-vendor memory through MCP instead of locked to one assistant
- Plain readable markdown you own forever, not black-box vectors or rented format
- EU-hosted by architecture so data stays in your region
- Survives AI tool changes and deprecations unlike built-in assistant memory
- No maintenance needed unlike DIY scripts and cron jobs
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| Free plan | Not given
| Not given
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| Open source | Not given
| 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 | 17 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 0 | 12 |
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| Citation Flow (Majestic) | 0 | 32 |
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| Referring domains (Majestic) | 0 | 84 |
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4 details filled in for both companies.
More alternatives to Callsign More alternatives to Agentage Memory