"Answer Engine Optimization (AEO) Audit Guide" matching MCP connectors:

Headless API-first double-entry accounting & bookkeeping engine. 84 MCP tools over HTTP.

[A4B](https://a4b.ai/) is a flat-rate CMMS (asset & maintenance management) that ships a native MCP server — an integration still uncommon in the CMMS category. AI assistants like Claude and ChatGPT can query asset inventory, create and update assets and maintenance tasks, search history, and generate reports. Secured with OAuth sign-in, audit logging, and per-organization isolation. Docs: https://docs.a4b.ai/mcp/

Governed retail, FMCG, and CPG operational tools: runs, cases, approvals, audit-ready execution.