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 Purpose-built platforms for AI search optimization, monitoring, and brand visibility:
 
+- [AgentGrade](https://agentgrade.com/) - Scanner for AI agent readiness across 70+ checks (MCP, x402, llms.txt, OpenAPI, content negotiation). Free per-check report with remediation links to a Knowledge Base. Public leaderboard, CLI, MCP server, and GitHub Action.
 - [AthenaHQ](https://www.athenahq.ai/) - Y Combinator-backed. Founded by ex-Google Search and DeepMind leaders. Unified GEO scoring. Claims 70+ customers with 10× AI traffic increases.
 - [Bluefish AI](https://bluefishai.com/) - $5M funded. Specializes in brand safety and source attribution. "Source graph" showing how Wikipedia, forums, PDFs influence outputs. AI ad campaigns.
 - [GeckoCheck](https://geckocheck.com/) - Platform that helps merchants and brands optimize visibility, dominate AIsearch results, and deliver answers to billions of daily shoppers.