a11y MCP
Open-source MCP server by priyankark exposing axe-core to AI agents via an open agentic loop. The agent receives the list of a11y violations and can iterate (analyze → patch → re-analyze) until the WCAG 2.1 AA score is clean. Open-source alternative to the official Deque axe-mcp, same engine (axe-core), no commercial support but zero vendor lock-in.
Strengths
- Open agentic loop: agent iterates until WCAG pass without intervention
- Zero vendor lock-in, pure open-source, local axe-core runner
- Full axe-core coverage: WCAG 2.1/2.2 AA + RGAA
Limitations
- No Deque pro support, no SLA or private rules
- Maintained by a solo dev, long-term sustainability risk
Best for
- Open-source-first teams that do not want to depend on a commercial SaaS for a11y
- Experimental agentic stacks (Claude Code, Cursor) where loop control matters most