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ActSeal vs Guardian

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

ActSeal compared with Guardian
Detail ActSealGuardian logo Guardian
What it doesEd25519-signed receipts for agent actions Human authority infrastructure for autonomous AI
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelNot given Freemium
PricingFree: 100 receipts per UTC day. Starter: $19/month via USDC, USDT, or ETH for 500 receipts per UTC day. Free: $0 per month with 2 connections, 1 agent, 500 protected actions per month. Developer: $99/month with 25,000 billable executions included, then $0.001 per billable execution with $500 default overage cap. Business: Contact Sales for paid pilots and enterprise contracts.
Key features
  • 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
  • Cryptographically signed receipts and verifiable evidence
  • Multi-party approval for organizational authority
  • Open-source SDK, MCP server, and framework adapters
  • Authority lifecycle management from grant to revocation
  • Supported integrations with payments and cloud accounts
  • Individual, family, business, and enterprise deployment options
  • Enforcement at tool execution boundaries
What makes it different
  • 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
  • Write-once signed decisions verifiable by auditors without trusting the vendor
  • Controls sit at the point where AI systems take consequential actions
  • One company integrating security and compliance disciplines
  • Open-source cores and published research allow vendor review
  • Human authority never transferred to the agent
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last check3 no change since last check
Trust Flow (Majestic)20
Citation Flow (Majestic)1626
Referring domains (Majestic)318

4 details filled in for both companies.

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