2026-07-28 Final Spec Ships Today; Primary Research Pages Average 11.3 Citations

MCP 2026-07-28 Final Spec Ships Today: Stateless Core, 10K+ Servers, 97M Monthly SDK Downloads

Why it matters for your score

Servers built on the 2026-07-28 revision may not work with older clients, which means any business running an MCP server needs to check client compatibility now. The protocol now has more than 10,000 public servers in production, and OpenAI, Google, Microsoft, and AWS have all built MCP into their agent stacks. Deprecated features including Roots, Sampling, and Logging remain functional for at least 12 months under the new formal deprecation policy.

Growth Memo Study: Primary Research Pages Are 3.3x More Citation-Dense in LLMs, But Only 2.7% of Cited Pages Qualify

Why it matters for your score

Only 2.7% of cited pages — 8 of 301 — qualified as genuine primary research, yet they earned 8.4% of all citations (90 of 1,075). Original data does not automatically win LLM citations; the study found content must also be structured for AI extraction. Key citation drivers identified were entity-rich comparisons, named competitors, first-party data, and transparent methodology.

Contently / Anagram Data: AI Search Visits Up 42.8% YoY to 27.4B in Q1 2026; 87.4% of AI Referral Traffic From ChatGPT

Why it matters for your score

AI search visits grew 42.8% year-over-year, from 15.6 billion to 27.4 billion between Q1 2025 and Q1 2026. With 87.4% of AI referral traffic originating from ChatGPT, blocking OAI-SearchBot is the single decision most likely to remove a brand from AI-generated citations. Cloudflare customers who block crawlers classified as 'Training' will also block Googlebot, Applebot, and BingBot starting September 15, 2026, because those are classified as mixed-use crawlers.