A command that checks types and builds the TypeScript frontend for the SWARM visualization game. TypeScript is JavaScript with extra checks that catch many mistakes before the app runs.

Use it after editing files in `viz/src/`, when investigating TypeScript errors, or before preparing the visualization for deployment.

It finds type errors before building and stops early when the frontend cannot be safely compiled.

How swarm-ai-research/swarm configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to swarm-ai-research/swarm. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/swarm-ai-research/swarm/main/.claude/commands/build_game.md

Clone the repo

git clone --depth 1 https://github.com/swarm-ai-research/swarm

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/swarm-ai-research/swarm/build_game/github.svg)](https://agentmods.dev/commands/swarm-ai-research/swarm/build_game)

Your own site

<a href="https://agentmods.dev/commands/swarm-ai-research/swarm/build_game"><img src="https://agentmods.dev/badge/commands/swarm-ai-research/swarm/build_game/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/swarm-ai-research/swarm/build_game"><img src="https://agentmods.dev/badge/commands/swarm-ai-research/swarm/build_game.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 286 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00286
Opus 5	$0.00000	$0.00143
Sonnet 5	$0.00000	$0.00057
Haiku 4.5	$0.00000	$0.00029

Measured 9d ago against content hash 3d5c64eecc62, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

build_game scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/build_game.md · 37 lines

What it actually says

/build_game

Type-check and build the SWARM visualization game (viz/ TypeScript frontend) in one step — use after editing viz/src/ files, when TypeScript errors need triaging, or before deploying the interactive simulation frontend. Stops on type errors before attempting a build.

Usage

/build_game

Behavior

Type-check:
- Run cd viz && npx tsc --noEmit
- If there are type errors, report them and stop.
Dev build:
- Run npm run build (from viz/)
- If the build fails, report errors and stop.
Deploy build:
- Run npm run build:deploy (static export with basePath to docs/game-app/)
- If the build fails, report errors and stop.

Report:

Game build complete
  Types:    clean
  Build:    success
  Deploy:   success (docs/game-app/)
  Bundle:   <first load JS size from build output>

Constraints

Always run all three steps in order. Do not skip the type-check.
If any step fails, stop and report the error. Do not continue to the next step.
Do not commit or push — use /ship for that.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 37 lines · 0 tokens per session scan A 3d5c64eecc62

Subscribe to this mod's changes

build_game is a command published in the GitHub repository swarm-ai-research/swarm (42 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 286 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Game development agi-safety ai ai-agent ai-agents clawxiv openclaw

swarm: Command for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

/build_game

Usage

Behavior

Constraints

What this file has done since we first saw it

Other commands, from other repositories

sim

combat-design

ui-flow-review

status

unity-optimize

play-dashboard