Perseus Computing vs ActionBox

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

Perseus Computing compared with ActionBox
Detail	Perseus Computing	ActionBox
What it does	High-assurance infrastructure for AI agents	Human approval infrastructure for AI agents and automation workflows
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Open source	Freemium
Pricing	Not given	Developer: Free forever with 250 Actions/month, 3 Sources, 3 Watches, 7-day history. Pro: $10/month ($120/year, save 17%) with 1,000 Actions/month, unlimited Sources, 20 Watches, 30-day history, additional Actions at $8 per 1,000-pack. Team: $49.17/month ($590/year, save 17%) with 5,000 Actions/mont
Key features	Harpe: chooses what an AI agent reads under a token budget with consistent results Kibisis: keeps agent memory on your hardware with AES-256-GCM encryption Argus: append-only record that detects edits with cryptographic verification No network code by default for local and disconnected use MIT License with published code, benchmarks and raw results	Typed decisions (Boolean, choice, text, number, rating, structured forms) Heartbeat Watches for silent-work detection Action Controls for safe follow-up operations Multi-surface inboxes (web, mobile, Slack, CLI, MCP) Model Context Protocol (MCP) integration Signed receipts and durable decision history Mobile app for iOS (15+) with push alerts Slack approval integration (Beta) CLI with bounded long-poll waiting Integration guides for GitHub Actions, n8n, LangGraph, OpenAI Agents SDK
What makes it different	Measured empirical validation across 6,111 questions outperforming full-context models Zero plaintext on disk with encrypted vaults matching plaintext accuracy 78.3% fewer tokens sent to the model with a 1,200-token budget per turn Preserves conversational chronology and relational qualifiers under token budgets	Durable decision records that survive client disconnections and restarts Reduces median approval time significantly in production environments Unified API across multiple approval surfaces without building custom dashboards Source-scoped identity for independent credential rotation across runners Built-in monitoring for stalled background work with heartbeat watches
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)	42 +1 (up) since last check	5 no change since last check
Trust Flow (Majestic)	3	7
Citation Flow (Majestic)	24	24
Referring domains (Majestic)	62	42

4 details filled in for both companies.

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