Checks web pages for accessibility with axe-core and Puppeteer, including WCAG checks and color blindness simulation.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add web-a11y --env MCP_OUTPUT_DIR='<MCP_OUTPUT_DIR>' -- node /path/to/mcp-web-a11y/build/index.js~/.codex/config.toml
[mcp_servers.web-a11y]
command = "node"
args = ["/path/to/mcp-web-a11y/build/index.js"]
env = { MCP_OUTPUT_DIR = "<MCP_OUTPUT_DIR>" }
# codex mcp add web-a11y --env MCP_OUTPUT_DIR='<MCP_OUTPUT_DIR>' -- node /path/to/mcp-web-a11y/build/index.js~/.cursor/mcp.json
{
"mcpServers": {
"web-a11y": {
"command": "node",
"args": [
"/path/to/mcp-web-a11y/build/index.js"
],
"env": {
"MCP_OUTPUT_DIR": "<MCP_OUTPUT_DIR>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"web-a11y": {
"type": "stdio",
"command": "node",
"args": [
"/path/to/mcp-web-a11y/build/index.js"
],
"env": {
"MCP_OUTPUT_DIR": "<MCP_OUTPUT_DIR>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"web-a11y": {
"command": "node",
"args": [
"/path/to/mcp-web-a11y/build/index.js"
],
"env": {
"MCP_OUTPUT_DIR": "<MCP_OUTPUT_DIR>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"web-a11y": {
"command": "node",
"args": [
"/path/to/mcp-web-a11y/build/index.js"
],
"env": {
"MCP_OUTPUT_DIR": "<MCP_OUTPUT_DIR>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"web-a11y": {
"command": "node",
"args": [
"/path/to/mcp-web-a11y/build/index.js"
],
"env": {
"MCP_OUTPUT_DIR": "<MCP_OUTPUT_DIR>"
}
}
}
}Environment variables
MCP_OUTPUT_DIR
Replace the placeholders with your own credentials and keep them out of version control.