Cobrain vs ActSeal

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Cobrain compared with ActSeal
Detail	Cobrain	ActSeal
What it does	Shared memory for Claude, ChatGPT and your AIs	Ed25519-signed receipts for agent actions
Stage	Startup	Not given
Founded	2026	Not given
Based in	IT	Not given
Pricing model	Not given	Not given
Pricing	Free: $0, up to 1,000 notes. Pro: $9/month, unlimited notes and shares. Team: $7/seat per month (minimum 3 seats), company brain with multiple admins.	Free: 100 receipts per UTC day. Starter: $19/month via USDC, USDT, or ETH for 500 receipts per UTC day.
Key features	Shared memory across different AIs Markdown notes in real folders Share branches with collaborators MCP connector for Claude, ChatGPT and compatible AIs Search by meaning on Pro and Team plans Attach PDFs and documents for AI to read Version history with unlimited revisions on Pro Permission-based access control	Issue signed receipts over action hashes Public verification without authentication Payment via USDC, USDT, or ETH Idempotency-Key support for 24 hours stdio MCP integration Issue and consume one-shot receipts
What makes it different	Free plan with no expiration for solo users Receivers of shares never pay Built by an agency using it daily with 648 notes	Portable cryptographic signatures verifiable by anyone without trusting the agent or service Built specifically for agent stacks and MCP/OpenAPI agents Cross-agent trust without sharing private keys
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	1 no change since last check
Trust Flow (Majestic)	7	2
Citation Flow (Majestic)	27	16
Referring domains (Majestic)	15	3

4 details filled in for both companies.

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