Structured AI decisions with probabilities for developers
The approval layer for AI agents
Stage
Not given
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Founded
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Based in
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US
Pricing model
Paid
Freemium
Pricing
Starter: $9.9 with 100,000 credits, no expiry; Pro: $99 with 1,000,000 credits, no expiry; Enterprise: $999 with 11,000,000 credits. One-time plans do not auto-renew; credits remain available after purchase.
Open Source: free and self-hosted. Free: $0/month hosted plan with up to 5 members. Scale: $20 per user per month. Enterprise: Custom annual contract.
Key features
Typed decision output with Choice, Score, and Noul question types
Probability and confidence results on every answer
Online playground for testing with unlimited runs
REST API and SDK integration
Multiple concurrent requests
Team workspaces and collaboration
Up to 8 typed questions per request
Fast decision latency around 120ms
Agent Skill for coding agents and LLM workflows
Support for English and Simplified Chinese
Tool call interception for all agent frameworks
Automatic approval rules to prevent fatigue
AI judge for complex rule evaluation
Works with LangGraph, CrewAI, Mastra, Claude Agent SDK and more
Open Agent Approval Protocol for framework independence
Self-hosted or cloud-hosted deployment options
Custom permission policies and organization controls
What makes it different
Structured output with defined answer space
Probability-backed decisions code can use directly
Multiple questions from one state in parallel
Developer control over business logic and actions
Designed to integrate into existing systems without replacement
Framework-agnostic: works with any AI agent through the open Agent Approval Protocol
No vendor lock-in: open source spec and SDKs let you swap providers without rewriting agents
Comprehensive audit trail for accountability and compliance
Meets reviewers where they work with multi-platform notifications
Policy-based routing to eliminate approval bottlenecks