Product hub

Four APIs. One validation boundary.

ThoughtProof provides independent decision validation — checking whether a proposed action is justified by mandate and evidence before consequential execution. The products below are separate lines with their own contracts. They are not a single merged API.

Typical agent exit
Typical agent exit / pre-execution gate: start with Sentinel (POST /sentinel/verify). Use PLV, RV, or DQL when your workflow needs plan-level, adversarial-reasoning, or five-axis checks.
Gate

Sentinel

Pre-execution checkpoint for AI agents. Lifecycle-aware verify before irreversible actions.

sentinel.thoughtproof.ai · POST /sentinel/verify
Plan

PLV — Plan-Level Verification

Checks whether an agent’s plan or multi-step output still matches the stated goal and evidence — step by step, before you trust the result.

plv.thoughtproof.ai · API: verify.thoughtproof.ai · POST /v2/verify
Axes

DQL — Decision Quality Layer

Scores a proposed action on five axes — intent, scope, risk, consistency, and reversibility — so weak or overreaching decisions surface before they execute.

app.thoughtproof.ai · API: dql.thoughtproof.ai · POST /dql/verify

Four separate APIs for different decision types — pick the surface that matches your workflow. Developer tooling and open-source engines are covered in the docs, not listed here as extra products.