browser-fps

browser-fps is a skill for Claude Code from DanMcInerney/orchflows. It costs 32 tokens per session (448 once invoked), scanned A, original, MIT.

A workflow for building a small first-person game that runs in a web browser. It uses research, a design brief, staged implementation checkpoints, and a playable test command.

In plain words
What is it for?
Use it to choose a browser game engine, define the room, controls, feel, and obstacles, then build and test the result in stages.
Why use it?
It turns a short game idea into a checked process with recorded decisions and evidence. This helps prevent the engine, level design, and implementation from drifting apart.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/danmcinerney/orchflows/browser-fps
Any agent
npx skills add DanMcInerney/orchflows --skill browser-fps
Clone the repo
git clone --depth 1 https://github.com/DanMcInerney/orchflows

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.

agentmods badge for browser-fps

README.md
[![agentmods](https://agentmods.dev/badge/skills/danmcinerney/orchflows/browser-fps.svg)](https://agentmods.dev/skills/danmcinerney/orchflows/browser-fps)
Your own site
<a href="https://agentmods.dev/skills/danmcinerney/orchflows/browser-fps"><img src="https://agentmods.dev/badge/skills/danmcinerney/orchflows/browser-fps.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 448 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.00448
Opus 5 $0.00016 $0.00224
Sonnet 5 $0.00006 $0.00090
Haiku 4.5 $0.00003 $0.00045

Measured 2d ago against content hash 853daf72c61d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

browser-fps 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 2d 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.

research/workflow-ladder-dogfood-2026-09-02/ring/workflows/browser-fps/SKILL.md · 45 lines

What it actually says

Require: brief, the game in a paragraph; workspace, the repository the build cuts from; probe, the command that plays the built site; bound, each call's budget.

tickets.py frame-open <run> --goal-file <brief> --workflow browser-fps

fan-out, both launched together:

tickets.py do <run> --pack orch-research-pack --parent <frame>
  --bound <bound> --goal-file <engine-goal>
tickets.py do <run> --pack orch-content-pack --parent <frame>
  --sheet fps-design --workspace <workspace> --goal-file <design-goal>

The first names the engine that fits brief, every claim sourced and dated. The second fixes level, input, feel and what blocks.

Then checkpointed-build under this frame, its Require filled from both returned lines: pack orch-code-pack, judge-pack orch-design-pack, sheets [threejs], and this workflow's workspace, probe and bound.

tickets.py frame-open <run> --goal-file <build-goal>
  --workflow checkpointed-build --parent <frame>

One design judge over the tip it returns, carrying the sheet a code-pack wave may not:

tickets.py judge <run> --pack orch-design-pack --parent <frame>
  --sheet fps-design --artifacts git:<tip> --goal-file <judge-goal>

bounded-repair.

Never: stamp fps-design on a code-pack call, which its packs: refuses; let a call default its workspace, which silently fixes the run's integration target; close on a claim.

Return: outside-close - tickets.py frame-close <run> <frame> --done <probe> over the returned tip, artifact: git:<tip> and the judge's findings: line relayed verbatim.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 2d ago First seen · 45 lines · 32 tokens per session scan A 853daf72c61d

Subscribe to this mod's changes

browser-fps is a skill published in the GitHub repository DanMcInerney/orchflows (53 stars, last pushed yesterday), licensed MIT. It adds 32 tokens to every session and 448 once invoked, about $0.0002 per session on Opus 5. 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 2026-09-03.

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