Si Live

si-live

Interactive Spirit Island board-state tool. Eliminates typed shorthand from the table workflow: the web UI writes data/current-game.json; skills (si-at-the-table, si-post-game) read the same file.

Prerequisites

• Rust toolchain (for backend + MCP server).
• Node 18+ / npm (for Vue 3 frontend).
• One-time frontend install: cd tools/si-live/frontend && npm install.

How to launch (manual)

The server needs to run outside the Claude Code process — Claude's skills are stdin/stdout and can't host a long-lived web server. Brett launches it once per session:

./tools/si-live/start.sh

Opens two processes:

• axum backend on http://127.0.0.1:7777 — owns data/current-game.json writes.
• Vite dev server on http://127.0.0.1:5173 — proxies /api to the backend.

Brett opens the frontend URL in a browser, sets up the game (adversary, spirits, board), and clicks through state updates. The backend persists to data/current-game.json debounced.

How Claude uses this skill

Phase A (current — file read): every skill that needs live board state (si-at-the-table, si-post-game) reads data/current-game.json directly. Schema is documented at tools/si-live/common/src/schema.rs.

Phase B (planned — MCP): the si-mcp binary exposes get_game_state, compute_innate_threshold, compute_draw_probability, etc. as MCP tools. Skills switch to MCP calls instead of file reads. File-read remains the fallback.

When to invoke

• User is about to play a game and asks Claude to help track / analyze in real time.
• User says "launch the tool" / "start si-live" / "open the board".
• si-at-the-table detects the state file is stale or missing and wants to prompt launch.

Do not auto-launch on every Claude invocation — Brett runs the tool when he wants it up. If the state file is missing or stale, tell Brett to run ./tools/si-live/start.sh; don't try to spawn it yourself.

State schema summary

See tools/si-live/common/src/schema.rs for the authoritative types. Key shapes:

• GameState: { version, round, phase, setup, pools, spirits, board_state, log }
• Spirit: { energy, card_plays, presence_on_board, presence_on_track_energy, presence_on_track_cardplay, elements_this_turn, hand, discard, forgotten, played_this_turn, growth_options }
• Board: { lands: { "<id>": Land } }
• Land: { terrain, coastal, explorers, towns, cities, dahan, blight, tokens }

Tracks are represented as remaining-covered-slot arrays. The head of the array is the next slot that will be revealed. Starting Energy/CP come from presence_energy_track[0] / presence_cardplay_track[0] — this is the invariant si-rules-check relies on.

Related skills

• si-rules-check — validate proposed plays against starting state + growth options.
• si-at-the-table — read the live state + return Rei-format option trade analysis.
• si-post-game — pull end-state from data/current-game.json and append to playlog.
• si-wiki-fetch — authoritative source for spirit/card/adversary data.