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 Community-Access/accessibility-agents --skill kb-severity-mappinggit clone --depth 1 https://github.com/Community-Access/accessibility-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/community-access/accessibility-agents/kb-severity-mapping)<a href="https://agentmods.dev/skills/community-access/accessibility-agents/kb-severity-mapping"><img src="https://agentmods.dev/badge/skills/community-access/accessibility-agents/kb-severity-mapping/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/community-access/accessibility-agents/kb-severity-mapping"><img src="https://agentmods.dev/badge/skills/community-access/accessibility-agents/kb-severity-mapping.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 | $0.00046 | $0.00840 |
| Opus 5.5 | $0.00018 | $0.00336 |
| Sonnet 5.5 | $0.00009 | $0.00168 |
| Haiku 4.5 | $0.00005 | $0.00084 |
Grade A, and why
kb-severity-mapping 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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Severity Mapping
Canonical severity definitions shared across web, document, and markdown audit domains.
Canonical Severity Levels
Each level, with its definition, WCAG conformance and score impact.
| Level | Definition | WCAG Conformance | Score Impact |
|---|---|---|---|
| Critical | Blocks access entirely for one or more user groups. No workaround exists. | Fails Level A | -15 to -22 points |
| Serious | Severely impairs access; a workaround may exist but is unreasonable. | Fails Level A or AA | -5 to -10 points |
| Moderate | Causes friction or confusion; most users can still complete the task. | Fails Level AA (advisory) | -2 to -4 points |
| Minor | Polish issue; no meaningful barrier for most users. | Technique deviation | -1 point |
Cross-Domain Equivalents
Each canonical level, with its web (axe-core or playwright), document (office or PDF) and markdown.
| Canonical Level | Web (axe-core / Playwright) | Document (Office/PDF) | Markdown |
|---|---|---|---|
| Critical | critical (axe-core) |
Missing document title; untagged PDF; missing heading structure | Broken anchor link leading to dead navigation |
| Serious | serious (axe-core) |
Missing alt text on informational image; table has no headers | Ambiguous link text (e.g., "click here"); missing alt text on image |
| Moderate | moderate (axe-core) |
Merged table cells; color-only data encoding | Skipped heading level; missing table caption |
| Minor | minor (axe-core) |
Decorative image with non-empty alt; redundant bookmark | Emoji in heading; em-dash used as list separator |
Score Impact Rules
Score impacts listed above are additive per finding. When the same issue recurs across many elements:
- First occurrence — full deduction
- Same issue type, same page/file — no additional deduction (already counted once per issue rule)
- Same issue type, different page/file — full deduction applies again to the new page/file score
Conversion Rules (Normalizing Cross-Domain Reports)
What ships with it
1 file 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.
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 · 72 lines · 46 tokens per session scan A 8409c7aadae2
kb-severity-mapping is a skill published in the GitHub repository Community-Access/accessibility-agents (428 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 840 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 2026-09-23.
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