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 canonical-root-marketplace-path-normalizationgit 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/canonical-root-marketplace-path-normalization)<a href="https://agentmods.dev/skills/ychampion/cskill-agents/canonical-root-marketplace-path-normalization"><img src="https://agentmods.dev/badge/skills/ychampion/cskill-agents/canonical-root-marketplace-path-normalization/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/canonical-root-marketplace-path-normalization"><img src="https://agentmods.dev/badge/skills/ychampion/cskill-agents/canonical-root-marketplace-path-normalization.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 | $0.00028 | $0.00324 |
| Opus 5.5 | $0.00011 | $0.00130 |
| Sonnet 5.5 | $0.00006 | $0.00065 |
| Haiku 4.5 | $0.00003 | $0.00032 |
Grade A, and why
canonical-root-marketplace-path-normalization 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.
What it actually says
SKILL: Canonical-Root Marketplace Path Normalization
Domain: extensions-mcp Trigger: Use when project settings declare relative extension paths but the shared registry spans multiple worktrees or checkouts. Source Pattern: Distilled from reviewed shared-registry path normalization logic.
Core Method
Resolve relative local source paths against the repository's canonical root rather than the current worktree directory before comparing them to shared registry entries. This produces one stable identity for a shared record, prevents worktrees from overwriting each other with checkout-specific paths, and avoids dead paths when temporary worktrees disappear. Normalize before diffing so equivalent repo-relative settings are treated as the same source.
Key Rules
- Normalize shared local paths against the canonical repo root, not the active worktree.
- Run normalization before diff comparison so equivalent sources do not look like drift.
- Preserve a valid existing entry when a transient worktree path is missing but the canonical source is still the same.
Example Application
If a repo declares ./plugins/internal, normalize it against the canonical checkout root so every worktree resolves to the same shared registry path.
Anti-Patterns (What NOT to do)
- Do not stamp worktree-specific absolute paths into a user-global registry.
- Do not treat equivalent repo-relative paths as true source changes.
- Do not overwrite a valid shared entry with a dead temporary path.
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 · 28 lines · 28 tokens per session scan A 74c289e69863
canonical-root-marketplace-path-normalization is a skill published in the GitHub repository ychampion/cskill-agents (36 stars, last pushed 6mo ago), licensed MIT. It adds 28 tokens to every session and 324 once invoked, about $0.0001 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 2026-08-30.
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