jev-api.com · /v1/systemone

Typed decisions.
Not another chat wrapper.

Jev API evaluates a state against typed questions and returns structured answers with calibrated probabilities and token usage.

Decisions only

There is no /chat/completions here. Use POST /v1/systemone for typed, structured evaluation.

Official model IDs

Use jev-latest for the stable release, jev-preview for the newest release, or jev-1.13.0 to pin a version.

Simple usage pricing

Input is $0.084 per 1M tokens. Output tokens are $0.

A first request

curl -s https://jev-api.com/v1/systemone \
  -H "Authorization: Bearer $JEV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "jev-latest",
    "state": "Help! My payouts have been failing for 3 days.",
    "questions": {
      "is_urgent": {
        "type": "noul",
        "instructions": "Does this message convey urgency?",
        "criteria": {
          "true": "Explicitly time-sensitive",
          "false": "No urgency expressed"
        }
      }
    }
  }'

Agent Skill

Give your agent Jev API

Copy this one sentence and send it to your agent. The agent can read the skill, configure your API key securely, and start using Jev for structured decisions.

Read and install the Jev Decision Agent Skill from https://jev-api.com/docs/SKILL.md, configure JEV_API_KEY securely, and use it whenever I ask for a bounded classification, routing, score, or yes/no decision.
Open SKILL.md