Decision engines
Run a decision
Building your check is free. Already bought?
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Use the address you bought with. We email you a one-time link: no password to remember.
Not a customer yet? The Startup and Business Soundchecks are free with no sign-in, and the 30-day Decision Sprint unlocks the paid engines. Developers and AI agents: use the API or MCP server.
Free, no credits: Startup Soundcheck · Business Soundcheck
Your runs
Open a run to see it again, or run it again with updated inputs: that is your 90-day re-baseline.
Prefer every field? Use the , or send JSON through the API or MCP server.
Your draft is saved on this device as you go.
· review
Ready to run?
What we'll send the engine (for the curious, and for agents)
Let my AI draft it
The prompt
Connected Signal Band to your AI through MCP? It can run the engine for you instead: see the developer guide.