Question 1

What is Jev-Character?

Accepted Answer

A modular TypeScript framework for role-playing agents and autonomous NPCs powered by the Jev decision model. It combines agent memory, character knowledge, personal goals, bounded action selection and programmatic dialogue in a reusable SDK other games can embed.

Question 2

How does it use Jev?

Accepted Answer

Developers describe character principles in natural language and supply changing observations and memories; Jev selects eligible actions and communicative intents with typed decisions, while the host executes world effects and composes responses from authored plans and permitted facts.

Question 3

What is the Fog Harbor demo?

Accepted Answer

The playable case study: a bilingual 2D AI town with five residents, a small neighborhood and a player trying to make a living. The README notes its screenshots use the explicitly labeled offline rules mode to illustrate the interface, not as evidence of Jev model quality.

Question 4

Does Jev write the dialogue itself?

Accepted Answer

No: the README says there is no free-form text generation in the Jev dialogue path. Jev picks what a character intends to communicate, and the program layer combines that choice with permitted facts, current state, remembered encounters and authored phrasing to produce a readable response.

Question 5

Can I use the character core in my own project?

Accepted Answer

Yes — the README presents Jev-Character as the independent core and Fog Harbor as one host, with a section on using the core in another project. The captured excerpt was truncated before that section, so check the repository for the current embedding steps and API.

Question 6

What language is it written in and what license does it use?

Accepted Answer

TypeScript, with 1 star and no license listed in the GitHub metadata captured 2026-10-15. The repository was created and last pushed in September 2026 per the metadata, so it is a young project.

Question 7

Is it production-ready for a game?

Accepted Answer

The README calls it a software alpha and frames it as an exploration from individual characters toward agent societies, explicitly not evidence of large-scale social emergence or superiority over rule-based or LLM-based agents. Treat the five-resident town as a demonstration, not a shipped AI-town system.

Jev Charactor

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