Agentboxd vs Stacktrace

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

Agentboxd compared with Stacktrace
Detail	Agentboxd	Stacktrace
What it does	Real email inboxes for AI agents with API, webhooks, and AI triage	Real-time steering and guardrails for AI agents
Stage	MVP	Not given
Founded	Not given	Not given
Based in	GB	Not given
Pricing model	Free	Freemium
Pricing	Free during public beta. Planned after beta: Builder $15/month, Team $60/month, Scale custom. Builder includes 25,000 emails/month, 100 inboxes, 25,000 AI triage calls/month. Team includes 150,000 emails/month, 1,000 inboxes, 150,000 AI triage calls/month. Overage pricing: $1 per 1,000 emails, $0.50	Team: Free per organization, unlimited users, 200 session-hours per month. Enterprise and Gateway: Custom pricing, billed annually.
Key features	AI triage on every email with category, phishing, injection, and urgency scoring Inboxes with one API call on shared or custom domains Drafts with human approval before sending DKIM-signed sending with threaded replies Webhooks with HMAC-SHA256 signature verification Full-text search and long-poll wait endpoints Text extraction from attachments including OCR Sign in with Agentboxd for AI agent authentication	Reads every tool call agents make and blocks unsafe ones before they run Catches stalled and runaway sessions while they run Steers agents back when they go past what was asked Tracks every session's tokens against usual usage Stops credential and data leaks before they leave the machine Inventories all agents, MCP servers and skills in use Blocks dangerous calls before they run in agent hooks and at the gateway Sends every finding to Slack, webhook or SIEM Verifies each agent's identity before access Keeps audit-grade masked records of every action and decision
What makes it different	AI processing is optional with privacy switch	Works with Claude Code, Codex, Cursor, Devin and more Runs on your machines, gateways and in the cloud Active steering corrects or stops drifting runs One policy applied across all MCP servers, plugins and skills Continuously monitors components for known vulnerabilities
Community votes	0	0
DR (Domain Rating by Ahrefs)	21 +4 (up) since last check	3 +2 (up) since last check
Trust Flow (Majestic)	5	13
Citation Flow (Majestic)	31	25
Referring domains (Majestic)	55	23

5 details filled in for both companies.

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