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TC39
What this score means
Your AEO score measures whether AI search engines (ChatGPT, Claude, Perplexity, Gemini) can actually read your site and cite it in answers. Two-thirds of websites are invisible to them. TC39 just got measured.
4/10 means TC39 is borderline visible. AI bots can crawl your site but your structured-data signals are thin. You are at risk of being skipped when buyers ask AI for a recommendation.
About TC39
Notes Specs Toggle sub-menu for specs Active Proposals ECMA-262, ECMAScript ECMA-402, Intl API ECMA-404, JSON ECMA-414, ECMAScript Specification Suite Contribute Toggle sub-menu for Contribute Contribute to Proposals Contribute to Tests Reading the Spec Join the Discourse State of Proposals Toggle sub-menu for Contribute English Deutsch 简体中文 日本語 Русский Українська Français Specifying JavaScript.
Key Topics
Details
Category: Technology
tc39.github.ioAI Visibility Breakdown
3
Structured Data
6
Content Structure
4
Entity Clarity
3
E-E-A-T Signals
5
Technical AEO
2
AI Discoverability
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Your full 6-category score breakdown
Exact fixes: robots.txt, schema, llms.txt
AI bot crawls from ChatGPT, Claude, Perplexity, Gemini
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Tech Shoppers Do More Research Than Anyone. Are You There When They're Looking?
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Source & Attribution
Scored by Engagemii on May 22, 2026. Methodology: engagemii.com/aeo/methodology
Source URL: https://engagemii.com/aeo/brands/tc39-github-io
Cite this score: Engagemii (2026). "AEO Score for TC39." Retrieved from https://engagemii.com/aeo/brands/tc39-github-io
Licensed under CC BY 4.0. You may reuse this data with attribution: a visible link to engagemii.com.
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