The Decision Quality Layer

An independent second opinion on your agent's plan — before you commit.

Identity, authorization and security ask if an action is allowed, safe, and from a real user. None of them asks the last question: is the plan your agent came up with actually a good one? That's the layer we're building.

Join the waitlist

Opens an email to our team — reply and you're on the list. Browser extension (Comet, Genspark, Chrome/Edge agent mode) and MCP proxy (Claude Desktop, Cursor, Copilot) shipping this quarter. No spam, one launch email.

Five checks · every action · any agent

Intent match

Does the plan actually solve the request, or is it a plausible-sounding detour?

Consequence awareness

Does the plan recognize every irreversible side effect before it happens?

Constraint compliance

Does it stay within your stated bounds — budget, time, allow/deny lists?

Plausibility

Are the numbers, prices, times and facts within a reasonable range?

Alternative existence

Is there an obviously better option the agent missed?

Who it's for

You use an agent browser — Perplexity Comet, Genspark, or Chrome/Edge with agent mode. The extension pauses the action and shows you the verdict before you commit.

You use an MCP client — Claude Desktop, Cursor, VS Code Copilot. The proxy checks every tool call first; sound ones pass through invisibly.

You're a developer — the Sentinel API is already live at sentinel.thoughtproof.ai. Integrate directly.