batocera-display

batocera-display is a skill for Claude Code from t3chnaztea/batocera-skills. It costs 116 tokens per session (1,802 once invoked), scanned A, original, MIT.

A guide for configuring how games appear on a Batocera arcade cabinet, including CRT-like effects, screen borders, resolution, and image alignment. Batocera is a Linux system for running retro games.

In plain words
What is it for?
Use it to set system or game-specific display effects, configure bezels and overlays, find missing metadata files, and verify changes by launching a game and inspecting a screenshot.
Why use it?
It reduces display problems such as incorrect shader selection, cropped artwork, misalignment, and visual patterns caused by unsuitable settings.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the batocera plugin — 6 skills shipped together

Good fit Use it to set system or game-specific display effects, configure bezels and overlays, find missing metadata files, and verify changes by launching a game and inspecting a screenshot.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/t3chnaztea/batocera-skills/batocera-display
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.

Any agent
npx skills add t3chnaztea/batocera-skills --skill batocera-display
Clone the repo
git clone --depth 1 https://github.com/t3chnaztea/batocera-skills

Made for: Claude Code.

Or install batocera, the plugin that ships this one along with the rest of its 6 skills.

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 batocera-display

README.md
[![agentmods](https://agentmods.dev/badge/skills/t3chnaztea/batocera-skills/batocera-display/github.svg)](https://agentmods.dev/skills/t3chnaztea/batocera-skills/batocera-display)
Your own site
<a href="https://agentmods.dev/skills/t3chnaztea/batocera-skills/batocera-display"><img src="https://agentmods.dev/badge/skills/t3chnaztea/batocera-skills/batocera-display/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.

agentmods 80×15 button for batocera-display

Your own site · 80×15
<a href="https://agentmods.dev/skills/t3chnaztea/batocera-skills/batocera-display"><img src="https://agentmods.dev/badge/skills/t3chnaztea/batocera-skills/batocera-display.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,802 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00116 $0.01802
Opus 5 $0.00058 $0.00901
Sonnet 5 $0.00023 $0.00360
Haiku 4.5 $0.00012 $0.00180

Measured 11d ago against content hash 53f77149bde8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

batocera-display 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 11d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/filter_small_bezels.py, scripts/generate_tbp_info.py, scripts/snes-bezel-fallback.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/batocera-display/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Batocera Display

Shaders, bezels, and display mode — everything about how the picture looks. Assumes the connection pattern, batocera.conf/configgen model, and verify loop from batocera-ops. Because display changes are visual, the batocera-ops remote verify loop (ES HTTP API launch + batocera-screenshot) is your primary tool here: never declare a shader or bezel "working" from the config alone — launch it and look.

Shaders

Shaders are assigned per-system (or per-game) in batocera.conf. Two key mechanisms and the traps around each.

shaderset resolves against TWO search paths

<system>.shaderset=<name> is a folder-name lookup resolved against both:

  1. /userdata/shaders/configs/<name>/ (user-installed)
  2. /usr/share/batocera/shaders/configs/<name>/ (system-bundled)

Checking only one path is enough to wrongly declare a preset invalid. Some built-in names are aliases that resolve to a preset deep under /usr/share/batocera/shaders/. Before concluding a shaderset value is dead:

SSHB "find /userdata/shaders /usr/share/batocera/shaders -maxdepth 3 -iname '<name>*'"

And read the launch log for the shader actually used on the last launch — it is authoritative:

SSHB "grep -i 'set-shader\|shader' /userdata/system/logs/es_launch_stdout.log | tail"

Two shader keys: shaderset vs -renderer.shader

  • <system>.shaderset=<name> — a Batocera shaderset folder (may bundle bezel art, e.g. Koko-AIO/Duimon presets).
  • <system>-renderer.shader=<path> — a direct RetroArch .slangp path (relative to the shaders dir, or absolute). This is how you assign a plain CRT preset like crt/crt-super-xbr or a custom .slangp.

Per-game overrides use the exact-filename key from batocera-ops → batocera-conf: snes["Super Mario World (USA).sfc"]-renderer.shader=.... A glob (snes["Star Fox*"]...) never matches.

Anti-moiré: integer scaling is impossible inside a custom-viewport bezel

A CRT mask shader (crt-royale and friends) can produce rainbow moiré when the game isn't integer-scaled. The usual cure — video_scale_integeris ignored for a custom viewport, and bezels that force a custom RetroArch viewport (with fractional coordinates) put you exactly there. So you cannot integer-scale inside those bezels.

Read the full file on GitHub · 142 lines

Files

What ships with it

5 files 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. 11d ago First seen · 142 lines · 116 tokens per session scan A 53f77149bde8

Subscribe to this mod's changes

batocera-display is a skill published in the GitHub repository t3chnaztea/batocera-skills (4 stars, last pushed 19d ago), licensed MIT. It adds 116 tokens to every session and 1,802 once invoked, about $0.0006 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 2026-08-31.

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