Turn AI conversations into tests and runnable code.
Jev State — know why your agent takes the next step
1 / 3Overview
What is Jev State?
Turn AI conversations into tests and runnable code
Jev State turns AI conversations into tests and runnable code. Build and regression-test conversational workflows: define the behavior you want, reproduce a conversation, fix the wrong decision, and check for regressions before you ship.
Design state machines visually — drag states, connect transitions, and set entry conditions, confidence thresholds, and replies per state, strictly bounding what your agent may do. Run live with your own TypeSafe API key, or use the keyless deterministic simulation mode to verify wiring.
Every step shows why it happened: actual input, criteria, probability distribution, confidence, resolved model, latency, and token usage. Save good or bad conversations as repeatable multi-turn regression tests runnable in the studio or CLI/CI.
Export a full TypeScript project — workflow.json, execution engine, regression runner, CI config, and SKILL.md — and run it in your own app with no Jev State deployment needed. MIT open source, no account, no subscription: your keys, your usage.
Platforms and languages
Jev State Availability
Platforms
Languages
Capabilities
Jev State Key Features
Visual state machine builder
Drag states, connect transition edges, and set entry conditions, confidence thresholds, and replies — strictly bound what your agent may do.
Live and simulation try-runs
Use your own TypeSafe API key for live conversations, or the keyless deterministic simulation to verify wiring without credentials.
Explainable decisions
Every step shows actual input, criteria, probability distribution, confidence, resolved model, latency, and token usage.
Regression testing
Save any conversation as a repeatable multi-turn test with expected end state and reply assertions; run in the studio or CLI/CI.
Export runnable code
Download workflow.json, execution engine, regression runner, CI config, and SKILL.md as a TypeScript project — no Jev State deployment at runtime.
Best for
Who uses Jev State?
Developers building conversational AI agents
Define state-based conversation behavior, reproduce bad conversations, regression-test, and export runnable code
Plans and access
Jev State Pricing
Free
Free and MIT open source — no account, no subscription; live model usage billed by your own provider
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