Cranium vs Sickle
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Cranium compared with Sickle
| Detail | 
Cranium | 
Sickle |
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| What it does | Secure & Govern Enterprise AI
| Email MCP server for Claude, Cursor and other AI agents to access every mailbox you own
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | US
| GB
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| Pricing model | Contact for pricing
| Free trial
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| Pricing | Not given
| Monthly: €8.99/month after 7-day free trial. Yearly: €30/year (€2.50/month equivalent, 72% savings). Includes both the Mac app and the MCP connector.
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| Key features | - Discover every AI model, agent and vendor across the enterprise
- Govern AI policies mapped to NIST AI RMF, EU AI Act and ISO 42001
- Prove compliance with real-time AI Cards and audit-ready attestation
- AI Bill of Materials (AI-BOM) for complete system inventory
- Third-party vendor AI assessment and continuous verification
- SOC 2 Type 2 compliant and ISO 27001 certified
- Continuous AI discovery and exposure mapping
| - Search across multiple mailboxes simultaneously
- Read full email threads with conversation history
- Move, archive and mark emails as read
- Scoped permissions: read, change, and send separately
- Attach files up to 18 MB to drafts and emails
- Download and open email attachments
- Native macOS mail client included
- Support for multiple email providers
- Encrypted file handling during transfer
- Revoke access anytime within the hour
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| What makes it different | - One platform for the entire AI lifecycle instead of seven tools and seven dashboards
- Independent vendor with no model to sell and no sides in the AI ecosystem
- Trusted by Fortune 10 companies, global carriers and banks
- Born from KPMG Studio with decades of combined AI and cybersecurity expertise
- Continuous loop that automatically rediscovers and re-proves AI systems as they change
| - Works with any MCP client, not locked to one AI platform
- No installation required; works on macOS, Windows and Linux
- Access unlimited email accounts simultaneously in one connection
- Send emails with opt-in permission and approval workflow
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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) | 53 ● no change since last check | 13 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 12 | 8 |
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| Citation Flow (Majestic) | 31 | 22 |
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| Referring domains (Majestic) | 344 | 17 |
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5 details filled in for both companies.
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