A11y Check
NPM · @A11YCHK/MCP · SCANNED SEP 20
Web accessibility scanning (WCAG 2.2 AA + KWCAG 2.2) with Korean remediation guides
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 99 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to IsaacEryn/a11ychk). View diagnostics → Pass
- Clear OSI-approved license (Apache-2.0).Pass
- Actively maintained (last published 39 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability75
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 945 tokens (~157/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management90
- Stability observed for 27 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the A11y Check MCP server?
A11y Check runs locally as an npm package, launched with npx -y @a11ychk/mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @a11ychk/mcp
claude mcp add com-a11ychk-mcp -- npx -y @a11ychk/mcp
{
"mcpServers": {
"com-a11ychk-mcp": {
"command": "npx",
"args": [
"-y",
"@a11ychk/mcp"
]
}
}
} {
"servers": {
"com-a11ychk-mcp": {
"command": "npx",
"args": [
"-y",
"@a11ychk/mcp"
]
}
}
} codex mcp add com-a11ychk-mcp -- npx -y @a11ychk/mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-a11ychk-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@a11ychk/mcp"
],
"enabled": true
}
}
} openclaw mcp add com-a11ychk-mcp --command npx --arg -y --arg @a11ychk/mcp
mcp_servers:
com-a11ychk-mcp:
command: "npx"
args: ["-y", "@a11ychk/mcp"] {
"McpServers": {
"com-a11ychk-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"@a11ychk/mcp"
]
}
}
} assistant mcp add com-a11ychk-mcp -t stdio -c npx -a -y @a11ychk/mcp
{
"mcpServers": {
"com-a11ychk-mcp": {
"command": "npx",
"args": [
"-y",
"@a11ychk/mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 −2
- Stability: pass → 0.80 functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
- 15 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Sept 26 −2
- Stability: pass → 0.80 functional
- 9 Sept 26 0
- Stability: 0.97 → pass security
- 8 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed npm/@a11ychk/mcp@0.1.4
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | IsaacEryn/a11ychk |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/IsaacEryn/a11ychk/.github/workflows/publish-mcp.yml@refs/tags/mcp-v0.1.4 |
| Rekor log index | 2432368648 |
| Predicate type | https://slsa.dev/provenance/v1 |
| Subject digest | sha512:f3719f482d526bcc29f14d1dd5256dad94027750c874256990433c1522e83b042f803a68bb3bd85242e3d40559888d0ddbfe7fa2d91c3795b66935716 |
Background: How many MCP packages publish verified provenance →
Dependencies 99 packages
| Packages resolved | 99 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
crawl_sample 대표 페이지 표본 수집 ~109
사이트의 sitemap·내부 링크에서 대표 페이지 표본을 뽑는다 (WCAG-EM 방식 층화 표집, robots.txt 존중). 브라우저 없이 동작한다. 결과 URL들을 scan_pages에 넘겨 검사할 수 있다.
| Name | Type | Req | Description |
|---|---|---|---|
| lang | string | – | 결과 언어 (기본 ko) |
| maxPages | integer | – | 표본 크기 (기본 8, 최대 20) |
| url | string | yes | 사이트 루트 URL |
No output schema declared.
No examples provided.
get_fix_guide 규칙 개선 가이드 조회 ~97
검사 규칙(axe/자체 규칙) 하나의 한국어 개선 가이드와 WCAG·KWCAG 매핑을 조회한다. 코드 예시가 포함되어 수정 작업에 바로 쓸 수 있다. 브라우저 불필요.
| Name | Type | Req | Description |
|---|---|---|---|
| lang | string | – | 결과 언어 (기본 ko) |
| ruleId | string | yes | 규칙 id (예: image-alt, color-contrast) |
No output schema declared.
No examples provided.
kwcag_checkpoint KWCAG 검사항목 조회 ~109
KWCAG 2.2 검사항목(33개) 하나의 검사 방법·대응 WCAG 성공기준·자동 판정 규칙을 조회한다. id(예: 5.1.1) 또는 슬러그(예: alternative-text)로 찾는다. 브라우저 불필요.
| Name | Type | Req | Description |
|---|---|---|---|
| idOrSlug | string | yes | 검사항목 id 또는 슬러그 |
| lang | string | – | 결과 언어 (기본 ko) |
No output schema declared.
No examples provided.
scan_dir 로컬 폴더 접근성 검사 ~153
로컬 디렉터리의 정적 HTML 파일들을 재귀 수집해 일괄 검사한다 (최대 10개, 닷파일·node_modules 등 제외). 빌드 산출물·정적 사이트를 서버 없이 배포 전에 점검하는 용도다. file://로 열므로 fetch에 의존하는 CSR SPA 산출물은 빈 페이지가 된다 — 그런 경우 dev 서버를 띄워 scan_pages를 쓰세요.
| Name | Type | Req | Description |
|---|---|---|---|
| dir | string | yes | 검사할 디렉터리 절대 경로 |
| lang | string | – | 결과 언어 (기본 ko) |
| maxFiles | integer | – | 검사할 최대 파일 수 (기본 10) |
No output schema declared.
No examples provided.
scan_page 페이지 접근성 검사 ~157
웹 페이지 1개를 WCAG 2.2 AA + KWCAG 2.2 기준으로 검사한다 (axe-core + 자체 규칙). localhost 개발 서버와 로컬 정적 HTML(file:///…)도 검사할 수 있다. 각 위반에 한국어 개선 가이드(guide)가 붙는다. file://는 fetch가 차단되므로 CSR SPA 산출물은 빈 페이지가 된다 — 그런 경우 dev 서버 URL을 쓰세요. 사이트 전체 표본 검사·인증 준비 보고서는 a11ychk.com 웹 서비스의 기능이다.
| Name | Type | Req | Description |
|---|---|---|---|
| lang | string | – | 결과 언어 (기본 ko) |
| url | string | yes | 검사할 페이지 URL (http/https 또는 file://) |
No output schema declared.
No examples provided.
scan_pages 여러 페이지 접근성 검사 ~98
웹 페이지 여러 개(최대 10개)를 한 번에 검사한다. crawl_sample이 수집한 표본을 넣기 좋다. 그 이상 규모의 사이트 단위 검사는 a11ychk.com에서 표본 수집부터 보고서까지 자동으로 처리한다.
| Name | Type | Req | Description |
|---|---|---|---|
| lang | string | – | 결과 언어 (기본 ko) |
| urls | array | yes | 검사할 URL 목록 (최대 10개) |
No output schema declared.
No examples provided.
What is the A11y Check MCP server?
A11y Check is an MCP server listed in the public MCP registry as com.a11ychk/mcp. Web accessibility scanning (WCAG 2.2 AA + KWCAG 2.2) with Korean remediation guides. This page covers its npm package (@a11ychk/mcp).
Is the A11y Check MCP server safe to use?
A11y Check scores 93 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the A11y Check MCP server expose?
A11y Check exposes 6 tools: scan_page, scan_dir, scan_pages, crawl_sample, get_fix_guide, kwcag_checkpoint. Their descriptions and schemas cost roughly 723 tokens of context every time the server is loaded.
Is the A11y Check MCP server still maintained?
A11y Check is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the A11y Check MCP server under?
A11y Check declares the Apache-2.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.