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 ychampion/cskill-agents --skill terminal-specific-art-fallbacksgit clone --depth 1 https://github.com/ychampion/cskill-agentsWrote 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/ychampion/cskill-agents/terminal-specific-art-fallbacks)<a href="https://agentmods.dev/skills/ychampion/cskill-agents/terminal-specific-art-fallbacks"><img src="https://agentmods.dev/badge/skills/ychampion/cskill-agents/terminal-specific-art-fallbacks/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/ychampion/cskill-agents/terminal-specific-art-fallbacks"><img src="https://agentmods.dev/badge/skills/ychampion/cskill-agents/terminal-specific-art-fallbacks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00031 | $0.00433 |
| Opus 5 | $0.00015 | $0.00217 |
| Sonnet 5 | $0.00006 | $0.00087 |
| Haiku 4.5 | $0.00003 | $0.00043 |
Grade A, and why
terminal-specific-art-fallbacks 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 8d 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 — 28 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: Terminal-specific Art Fallbacks
Domain: terminal-ui
Trigger: When the same brand art must render on Apple Terminal, xterm, and other hosts with different Unicode/color capabilities while preserving the mascot identity.
Source Pattern: Distilled from reviewed terminal rendering and compatibility patterns.
Core Method
Detect the terminal host (e.g., via env.terminal) before rendering and prepare specialized fragments for hosts that need them. Use a default art path for general terminals but route sensitive fragments (eye shapes, raised arms, background fills) through the host-specific data, keeping the fallback path centered on the default segments so the identity stays consistent even when the terminal cannot express the fancy fragments.
Key Rules
- Gate the choice of fragment set on the detected terminal (Apple Terminal uses the
APPLE_EYESset; others reusePOSES) so hosts with different capabilities stay readable. - Keep the identity stable by falling back to the default pose when a specialized host-specific variant is unavailable, rather than constructing a completely new layout.
- When a test host requires a background-fill trick (Apple Terminal’s background-color fill), wrap the fragments in a dedicated render path instead of mixing it with the default path.
Example Application
If your release banner has env.terminal === "Apple_Terminal" users and others, detect the host early, feed Apple with background-filled eye fragments, and serve the general Unicode art to everyone else while maintaining the same mascot name, spacing, and pose structure.
Anti-Patterns (What NOT to do)
- Rendering only a single art variant and letting hosts with lesser glyph support break the UI or show garbage characters.
- Mixing host-specific fragments inside the default render path so every render re-evaluates terminal detection and corrupts memoization caches.
- Creating entirely separate mascots per terminal host instead of sharing the same segments and only swapping fragments.
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.
- 8d ago First seen · 28 lines · 31 tokens per session scan A ffa6d87f494d
terminal-specific-art-fallbacks is a skill published in the GitHub repository ychampion/cskill-agents (36 stars, last pushed 5mo ago), licensed MIT. It adds 31 tokens to every session and 433 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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