Latest research and insights on AEO, MCP, and AI agent integration
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Felt-first AXR rating of 225 services and 3-layer test of 188 recipes. AAA=96% success, D=33%. Multi-agent comparison with Claude/GPT/Gemini.
A full overview of the AEO rating's three evaluation pillars (MCP readiness, API quality, agent track record), the 7-tier grade system, data sources, and the end-to-end rating process.
Read more →We live in an era where AI agents choose SaaS services. Learn the concept of AEO (Agent Engine Optimization), evaluation criteria, and concrete actions to improve your score.
Read more →A thorough explanation of MCP, the open protocol by Anthropic. Discover why this standard connectivity specification between AI agents and external services matters.
Read more →A report on the results of AI agents actually connecting to and operating 225 SaaS/API services. Success rates, stumbling points, and improvement suggestions from the agent's perspective.
Read more →Frequent error patterns and their solutions when deploying MCP Servers. Comprehensive best practices covering authentication flows, schema design, and error handling.
Read more →A comparison of the fundamental differences between MCP and API from technical, use case, and AEO score perspectives. A decision guide for SaaS companies navigating agent-readiness technology choices.
Read more →Rating 225 major global and Japanese SaaS/API services by AI agent readiness. A comprehensive summary of grade distribution from AAA to CCC, category analysis, and key trends.
Read more →freee (AAA, 90% success) vs Money Forward (AA, 93%, 135ms fastest) vs Yayoi (BB, no MCP). A full AEO comparison of Japan's top three accounting platforms using real agent telemetry.
Read more →SmartHR's agent success rate is just 39% across 89 runs. Auth failures, v1/v2 endpoint issues, and semantic discoverability gaps — plus freee HR's official MCP and KING OF TIME at 65%.
Read more →Sansan leads with AA (60% success, 173ms, official MCP). Salesforce falls to BB (43% success, 474ms, no official MCP). Real agent telemetry across Japan's top 4 CRM platforms.
Read more →Backlog earns AAA (90% success, 119ms, MIT-licensed official MCP). kintone holds AA (78%, 187ms). Japan-built tools outperform global platforms across 150+ agent runs.
Read more →Slack earns AAA (91% success, 157ms, verified official MCP). Chatwork holds AA with official MCP but 66% success and 378ms latency. LINE WORKS has no MCP and 20% success — Japan's largest messenger lags far behind.
Read more →Zero of 7 marketing platforms offer official MCP. Only SendGrid is verified (AA, 80%, 140ms via 3rd-party MCP). Marketo sits at BBB (63%). Japan's SATORI shows 100% success in 2 runs. Marketing SaaS is the least agent-ready category by far.
Read more →Zero official MCP servers across the entire category. Freshdesk leads with 100% success rate (Grade A). Zendesk draws the most agent attempts (30) but only a 33% success rate. Each vendor's AI internalization strategy is structurally blocking MCP adoption.
Read more →Shopify dominates with AAA (94%, 123ms, 4 official MCP servers). Rakuten's XML-RPC protocol delivers a 50% success rate and 550ms latency. The starkest global-vs-domestic AEO gap of any category we track.
Read more →E-signature AEO rating report covering 5 services. CloudSign leads domestically with 80 connections but 61% success rate. DocuSign achieves 100% via third-party MCP. Real data analysis of agent readiness in Japanese legal SaaS.
Read more →Security AEO rating report covering 3 services. HENNGE One leads with AA grade in Japan's zero-trust market. 1Password Business offers MCP server support. Auth0 carves a niche with OAuth2-specialized agent integration.
Read more →Developer tools AEO rating report covering 7 services. GitHub achieves AAA with best-in-class official MCP. AWS, GitLab, Playwright MCP, GCP, Vercel, and Fly.io compared across CI/CD, IaC, and test automation agent workflows.
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KanseiLink research data is also accessible via MCP server.
AI agents can connect to the kansei-link MCP Server to use tools such as
AEO score search, service detail retrieval, and report generation.
Available endpoints: search_services, get_service_detail,
get_insights, generate_aeo_report