AI Signal Tools
The ai signal tools we detect on new sites, ranked by how many use each. Part of AI & Emerging.
- Tools tracked
- 6
- in AI & Emerging
- Sites
- 2,324
- using at least one ai signal tool
- Above 1%
- 3
- tools on more than 1% of them
What we found
- Claude runs on more than half of the sites using an ai signal tool (86%), 7.7 times as many sites as OpenAI Domain Verification.
The leading ai signal tools
| # | Movement | Tool | Country | Share | Sites |
|---|---|---|---|---|---|
| 1 |
Claude
Sites that declare Claude as their generator, meaning the page was written with Anthropic's Claude models.
|
86% | 1,993 | ||
| 2 | OpenAI Domain Verification Meta tag verifying domain ownership for OpenAI integrations such as custom GPTs. | 11% | 259 | ||
| 3 | MCP Server Response header indicating the site exposes a Model Context Protocol server. | 2.8% | 64 | ||
| 4 | AEO Meta Tags Namespaced meta tags added to a page to describe it to AI answer engines for answer engine optimisation. | 0.4% | 9 | ||
| 5 | ChatGPT Pages that name an OpenAI GPT reasoning model as the author of their content. | 0.3% | 6 | ||
| 6 |
idAEO
Answer engine optimisation service that tracks AI crawler visits to a website.
|
<0.1% | 1 |
Share is of the 2,324 sites using an ai signal tool; a site can use more than one. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days.
Recently launched products using ai signal tools
| Product | Launched |
|---|---|
| Slow Beads | 17 Oct 2026 |
| memry7 | 14 Oct 2026 |
| THE RENDER OFFICE — On-Demand AI Image Department | 3 Sep 2026 |
| Amalgama Online | 24 Aug 2026 |
| WebFindDeals | 12 Aug 2026 |
| AgentConnect | 9 Aug 2026 |
Often built with
Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).
- Analytics 5
- Framework 5
- CSS Framework 4
- UI Library 4
- Developer Tools 3
- Font 3