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 Dragoon0x/canon --skill canon-statesgit clone --depth 1 https://github.com/Dragoon0x/canonWrote 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/dragoon0x/canon/canon-states)<a href="https://agentmods.dev/skills/dragoon0x/canon/canon-states"><img src="https://agentmods.dev/badge/skills/dragoon0x/canon/canon-states/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/dragoon0x/canon/canon-states"><img src="https://agentmods.dev/badge/skills/dragoon0x/canon/canon-states.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 | $0.00071 | $0.02842 |
| Opus 5.5 | $0.00028 | $0.01137 |
| Sonnet 5.5 | $0.00014 | $0.00568 |
| Haiku 4.5 | $0.00007 | $0.00284 |
Grade A, and why
canon-states 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 2mo 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 — 355 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CANON · States
Every screen has at least 4 states beyond "happy path". Most products ship 1 or 2 and call it done. The states below are the contract: when reality breaks the pattern, the UI handles it gracefully.
The Four Required States
For any data-driven screen (list, table, dashboard, feed):
| State | When | Required |
|---|---|---|
| Initial / Loading | Data being fetched | Always |
| Empty | No data exists | Always |
| Error | Fetch failed | Always |
| Populated | Data present (happy path) | The default everyone designs |
For interactive components (button, form, modal):
| State | When |
|---|---|
| Default | Idle |
| Loading | In-flight |
| Success | Completed |
| Error | Failed |
Loading States
| Wait time | Pattern |
|---|---|
| 0–400ms | Show nothing. Below this threshold, perceived as instant. |
| 400ms–1s | Spinner appears at 400ms |
| 1s–10s | Skeleton screen OR determinate progress |
| > 10s | Progress + status + estimated remaining |
Skeleton Screens
Skeletons reserve layout space and reduce perceived wait. Better than spinners for content that has a known shape.
.skeleton {
background: linear-gradient(
90deg,
var(--color-surface) 0%,
var(--color-surface-hover) 50%,
var(--color-surface) 100%
);
background-size: 200% 100%;
animation: skeleton-shimmer 1500ms infinite linear;
border-radius: 4px;
}
@keyframes skeleton-shimmer {
0% { background-position: 200% 0; }
100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
.skeleton { animation: none; }
}
| Property | Value | Source |
|---|---|---|
| Animation duration | 1000–2000ms | Slower = calmer |
| Color contrast (skeleton vs surface) | 1.2:1 to 1.5:1 | Subtle, never high |
| Shape | Match the content shape | Don't use circles for text |
| Stop on data load | Yes (don't keep animating) |
Don't skeleton everything. Skeletons are for primary content. Don't skeleton secondary chrome (sidebars, headers) that users already know.
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.
- 2mo ago First seen · 355 lines · 71 tokens per session scan A d019ac8238f4
canon-states is a skill published in the GitHub repository Dragoon0x/canon (6 stars, last pushed 6mo ago), licensed MIT. It adds 71 tokens to every session and 2,842 once invoked, about $0.0003 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.
canon-states compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| canon-statesDragoon0x/canon | Skill | 6 | 6mo ago | MIT | A | 71 | Claude Code, Codex |
| accessibilitydiegosouzapw/awesome-omni-skills | Skill | 170 | 4mo ago | MIT | C | 119 | Claude Code, Codex |
| accessibilityericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 86 | Claude Code, Codex |
| accessibility-auditoyi77/1ai-skills | Skill | 17 | yesterday | MIT | A | 29 | Claude Code |
| a11y-auditgreglas75/zuvo | Skill | 7 | 3d ago | MIT | A | 147 | Claude Code |
| axe-audittonone-ai/tonone | Skill | 77 | 23d ago | MIT | A | 47 | Claude Code |
| accessibility-compliance-accessibility-audit-v2diegosouzapw/awesome-omni-skills | Skill | 170 | 4mo ago | MIT | A | 76 | Claude Code |