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Excession Labs vs Stacktrace

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

Excession Labs compared with Stacktrace
DetailExcession Labs logo Excession LabsStacktrace logo Stacktrace
What it doesAI security agent and hosted model API for authorized testing Real-time steering and guardrails for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelNot given Freemium
PricingStarter $20/month with $30 credit; Pro $100/month with $175 credit; Max $200/month with $400 credit; Ultra $500/month with $1,250 credit. Pay as you go: add funds from $10 to $1,000, balance never expires. DeepSeek V4.1 Flash: $0.035 input, $0.005 cached input, $0.50 output per 1M tokens. DeepSeek V Team: Free per organization, unlimited users, 200 session-hours per month. Enterprise and Gateway: Custom pricing, billed annually.
Key features
  • Terminal AI agent with parallel workers
  • Per-tool allow, deny and ask rules
  • Evidence-linked findings with severity and remediation steps
  • OpenAI and Anthropic SDK-compatible API endpoints
  • Session save, resume, fork and export
  • Headless mode with JSONL output and exit codes for CI
  • Support for MCP servers, skills, AGENTS.md, slash commands and hooks
  • DeepSeek V4.1 Flash and abliterated variant models
  • Cross-platform support for macOS, Linux and Windows
  • Shared account balance between terminal agent and API
  • 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
  • Unified billing for both terminal agent and hosted API
  • API compatible with OpenAI and Anthropic SDKs
  • Evidence-based findings with source lines and reproduction steps
  • Terminal agent with configurable tool rules and headless CI mode
  • 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 votes00
DR (Domain Rating by Ahrefs)15 −1 (down) since last check3 +2 (up) since last check
Trust Flow (Majestic)013
Citation Flow (Majestic)025
Referring domains (Majestic)023

4 details filled in for both companies.

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