Jev Hold'em

Heads-up no-limit Texas hold'em against TypeSafe Jev. A local engine deals the cards, ranks hands, computes pot odds, and enforces legal actions. Jev only answers a fixed set of typed questions (Choice / Score / Noul); application code turns those answers into a bet.

Overview

Opening the page starts a match. You play as Hero; Jev sits across the table. Each time it is Jev's turn, the frontend posts one SystemOne request with the current table state. That decision is served by the @makers/jev model on EdgeOne Makers Models.

If the API is unavailable, a local heuristic still picks a legal action so the hand can continue.

Features

• Heads-up no-limit hold'em — blinds, streets, raise sizing, all-in, showdown, and side-pot-free chip accounting in a two-player match
• Typed Jev decisions — one @makers/jev call per action; no chat, no SDK
• Policy layer — if the Choice line is confident enough it is used directly; otherwise Score / Noul answers are composed into fold / check / call / bet / raise / all-in
• Model is injected — EdgeOne Makers Models supplies @makers/jev automatically, and edge-functions/typesafe/[[default]].js uses it for this match
• Mobile-first table — sticky action bar in portrait, side panel on the right in landscape and on desktop
• Fallback play — API errors fall back to a category-based heuristic instead of stalling the hand

How Decisions Work

Questions and thresholds live in src/jev/questions.js. One request covers:

Question	Type	Role
made_hand_strength	Score	Strength of the made hand, ignoring draws
draw_equity	Score	Extra equity from draws
board_danger	Score	How coordinated the board is
fold_to_price	Noul	Whether the price is too high to continue
value_bet	Noul	Whether to bet or raise for value
bluff	Noul	Whether a bluff is attractive
trap	Noul	Whether to check a strong hand
line	Choice	fold / check / call / bet / raise / all-in
bet_size	Choice	small / medium / large / all_in

src/jev/policy.js maps answers onto getLegal() output. @makers/jev is injected automatically by EdgeOne Makers Models. The only HTTP call is POST /typesafe/v1/systemone.

Project Structure

jev-holdem/
├── index.html
├── edgeone.json                         # EdgeOne Pages output directory: dist/
├── edge-functions/
│   └── typesafe/
│       └── [[default]].js               # Jev decision for this match
└── src/
    ├── main.js                          # Match loop, player input, Jev turn
    ├── ui.js                            # Table, controls, Jev panel
    ├── style.css
    ├── poker/
    │   ├── cards.js                     # Deck, suits, ranks
    │   ├── hand.js                      # 5-card evaluation
    │   ├── facts.js                     # Made hand + draws + pot odds
    │   └── engine.js                    # Table, streets, legal actions
    └── jev/
        ├── questions.js                 # SystemOne questions + thresholds
        ├── policy.js                    # Answers → legal action
        └── client.js                    # fetch + retry

Environment Variables

Variable	Required	Description
AI_GATEWAY_BASE_URL	Yes	Gateway base URL
AI_GATEWAY_API_KEY	Yes	Gateway API key

Learn More

• Vite
• TypeSafe
• TypeSafe docs