---
title: "Evaluate decision questions"
method: POST
path: "/v1/systemone"
tags: ["Decisions"]
---

# Evaluate decision questions

`POST /v1/systemone`

## Request

- Base URL: `https://api.tokenlab.sh`
- URL: `https://api.tokenlab.sh/v1/systemone`
- Auth: HTTP bearer

Evaluate state with named probability, choice, and ordered score questions. Synchronous JSON only. Token usage is reported when available; zero-priced output tokens are still included.

## Headers

- `X-TokenLab-Delivery-Policy` 'auto' | 'verified' | 'official'

## Request body

- object
  - `model` string, required
  - `state` union, required
    - string
    - object
    - unknown[]
      - unknown
  - `questions` object, required

## Response `200`

Decision results

- object
  - `id` string
  - `model` string, required
  - `answers` object, required
  - `usage` object
    - `input_tokens` integer, required
    - `output_tokens` integer, required

## Other responses

- `400`: Bad Request - Invalid input
- `401`: Unauthorized - Invalid or missing API key
- `503`: The requested Delivery tier is temporarily unavailable.

---

[API](https://skmtc.dev/tokenlab/apis/tokenlab-ai-gateway.md) · [All operations](https://skmtc.dev/tokenlab/apis/tokenlab-ai-gateway/llms.txt) · [OpenAPI document](https://skmtc.dev/tokenlab/apis/tokenlab-ai-gateway/revisions/3208bfbcda22?raw)