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.
npx skills add striderZA/OpenCodeGameStudios --skill balance-checkgit clone --depth 1 https://github.com/striderZA/OpenCodeGameStudiosWrote 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.
[](https://agentmods.dev/skills/striderza/opencodegamestudios/balance-check)<a href="https://agentmods.dev/skills/striderza/opencodegamestudios/balance-check"><img src="https://agentmods.dev/badge/skills/striderza/opencodegamestudios/balance-check/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.
<a href="https://agentmods.dev/skills/striderza/opencodegamestudios/balance-check"><img src="https://agentmods.dev/badge/skills/striderza/opencodegamestudios/balance-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00061 | $0.01411 |
| Opus 5.5 | $0.00024 | $0.00564 |
| Sonnet 5.5 | $0.00012 | $0.00282 |
| Haiku 4.5 | $0.00006 | $0.00141 |
Grade A, and why
balance-check 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Phase 1: Identify Balance Domain
Determine the balance domain from $ARGUMENTS:
- Combat → weapon/ability DPS, time-to-kill, damage type interactions
- Economy → resource faucets/sinks, acquisition rates, item pricing
- Progression → XP/power curves, dead zones, power spikes
- Loot → rarity distribution, pity timers, inventory pressure
- File path given → load that file directly and infer domain from content
If no argument, use question:
- "Which system should I check for balance?"
- Options:
[A] Combat balance/[B] Economy balance/[C] Progression balance/[D] Loot balance
Phase 2: Gather Context
Run these in parallel using Glob/Grep:
Glob pattern="assets/data/**/*.json" → find all data files
Glob pattern="assets/data/**/*.tres" → find Godot resource data files
Grep pattern="balance" path="design/gdd/" → find relevant GDDs
Glob pattern="design/balance/**/*.md" → find previous balance reports
- Read the GDD for the identified domain from
design/gdd/ - Read all relevant data files from
assets/data/ - Extract intended design targets, tuning knobs, and expected value ranges from the GDD
Phase 3: Delegate Expert Analysis
Spawn specialist agents via Task in parallel for the identified domain. Pass the full GDD content and data file content to each agent.
Combat balance → spawn systems-designer
Ask them to:
- Calculate DPS for all weapons/abilities at each power tier
- Check time-to-kill at each tier
- Identify any options that dominate all others (strictly better)
- Check if defensive options can create unkillable states
- Verify damage type/resistance interactions are balanced
- Produce a table of outliers with expected vs actual values
Economy balance → spawn economy-designer
Ask them to:
- Map all resource faucets and sinks with flow rates
- Project resource accumulation over time
- Check for infinite resource loops
- Verify gold sinks scale with gold generation
- Check if any items are never worth purchasing
- Produce a resource flow diagram in table form
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.
- 1mo ago First seen · 160 lines · 61 tokens per session scan A 14e11670ef45
balance-check is a skill published in the GitHub repository striderZA/OpenCodeGameStudios (101 stars, last pushed 17d ago), licensed MIT. It adds 61 tokens to every session and 1,411 once invoked, about $0.0002 per session on Opus 5.5. 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.
Other skills, from other repositories
professional-game-developer
Universal production game engineering skill — design, build, profile, test, and ship games across Unreal Engine 5, Unity 6 (DOTS), Godot 4.3+, Roblox (Luau), and Web/Custom engines with senior studio-grade architectural discipline. Encompasses all 42 specialized game studio job roles across 6 departments: Game Design…
design-system
Guided, section-by-section GDD authoring for a single game system. Gathers context from existing docs, walks through each required section collaboratively, cross-references dependencies, and writes incrementally to file.
setup-engine
Configure the project's game engine and version. Pins the engine in OPENCODE.md, detects knowledge gaps, and populates engine reference docs via WebSearch when the version is beyond the LLM's training data.
gate-check
Validate readiness to advance between development phases. Produces a PASS/CONCERNS/FAIL verdict with specific blockers and required artifacts.
reverse-document
Generate design or architecture documents from existing implementation. Works backwards from code/prototypes to create missing planning docs.
launch-checklist
Complete launch readiness validation covering every department: code, content, store, marketing, community, infrastructure, legal, and go/no-go sign-offs.