Outcome Engine
25 AI-powered tools with outcome-based billing. Pay only when tools succeed. Web scraping, code execution, automation, and more. Free tier available.
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|Outcome Engine
Pay Only for What Works
Outcome Engine is the first MCP server built from the ground up for outcome-based billing. Unlike traditional API pricing that charges per request, Outcome Engine only bills agents when a tool call results in a VERIFIED_SUCCESS state change.
How It Works
- Agent connects and discovers available tools (free)
- Agent invokes a tool via tools/call
- Outcome Engine evaluates the result
- Only VERIFIED_SUCCESS outcomes trigger a billing event
- Failed attempts, retries, and discovery calls are always free
Why Outcome-Based
- Zero risk for agents - no charges for errors or retries
- Aligned incentives - you succeed when your agents succeed
- Transparent metering - every billable event is a verified state change
- Enterprise-grade - built on Firebase with Moesif analytics
Pricing
| Tier | Price | Details |
|---|---|---|
| Free | $0 | 5 tool calls/month |
| Pro | $0.10/outcome | Per verified success |
| Enterprise | Custom | Volume discounts available |
PlaygroundUpdated Mar 22, 2026