Wix against Squarespace on what an agent reads
In short
Wix auto-generates a default llms.txt that describes the site and documents how AI agents can access live content through the Wix MCP endpoint. Squarespace: On 2026-11-04 www.squarespace.com answered Accept: text/markdown with text/html. Squarespace leads on content in the initial HTML, 2 to 1; Wix sites are server-rendered, with heavy script payloads.
The sourced difference
Wix documents an auto-generated llms.txt that points agents to its MCP endpoint, plus an API to edit it; native llms.txt on Squarespace 7.1 is reported only by a third party, and squarespace.com serves its own file through a 301 to /assets/llms.txt. Source, read 4 November 2026.
The rubric side by side
| Key | Wix | Squarespace |
|---|---|---|
| Content in the initial HTML | 1, with setup | 2, on by default |
| Real status codes | 2, on by default | 2, on by default |
| llms.txt generation | 2, on by default | 1, with setup |
| llms.txt linking | 0, not offered | 0, not offered |
| Markdown on request | 0, not offered | 0, not offered |
| JSON-LD output | 1, with setup | 1, with setup |
| OpenAPI exposure | n/a | n/a |
| Fenced, tagged code | n/a | n/a |
| Total | 6 of 12 | 6 of 12 |
The two differ on 2 of the numeric keys: content in the initial HTML, llms.txt generation. Evidence for each score is on the profiles of Wix and Squarespace.
Verdicts by reader
- Technical SEO
- Wix has a documented llms.txt; Squarespace support is unconfirmed from a primary source.
- Docs owner
- Wix owners can stop worrying about the file; Squarespace owners should check their settings.
- Front-end developer
- Neither serves markdown on request on the sites observed.
What each leaves undone
Wix
- Does not serve markdown on request on the sites observed.
- Does not keep an edited llms.txt in sync with site changes.
Squarespace
- Does not serve markdown on request on squarespace.com.
- Does not publish (as far as found) a help article on llms.txt.
Work left to the developer: Wix, Low for llms.txt; markdown needs an edge product. Squarespace, Medium: confirm the llms.txt setting on your plan, link it yourself, add markdown at the edge.
Sources
- dev.wix.com: the difference https://dev.wix.com/docs/api-reference/business-management/marketing/seo/txt-file-server/llms-txt/introduction, read 4 November 2026
- Wix: documentation https://support.wix.com/en/article/understanding-your-sites-llms-txt-file, read 4 November 2026
- Squarespace: documentation https://www.collaborada.com/blog/squarespace-llms-txt, read 4 November 2026
Last reviewed 4 November 2026