Why is my llms.txt file returning HTML instead of plain text?

Your llms.txt file isn't configured properly and returns HTML content instead of plain text. This prevents AI systems from reading your site's instructions. You need to create a proper text file at the /llms.txt endpoint with correct MIME type headers.

What does it mean when no opening content is found?

Your pages lack clear opening content that directly answers user queries. This hurts your chances of appearing in AI-generated responses and featured snippets. Add concise, answer-focused content at the beginning of your pages.

How do missing date signals affect my website's search performance?

Search engines can't determine when your content was created or updated without date signals. This impacts freshness rankings and user trust. Add publication dates, last modified timestamps, or structured data to show content recency.

Why is having an H1 tag critical for my pages?

Missing H1 tags hurt your SEO because they're the primary heading that tells search engines what your page is about. Every page needs exactly one H1 tag that clearly describes the main topic or purpose.

Can outdated content without dates hurt my search engine rankings?

Yes, content without clear publication or update dates can rank lower in search results. Search engines prefer fresh, recently updated content for many queries. Adding visible dates helps both users and search engines assess content relevance.

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Operand SEO & AI Visibility Audit

Operand is a search and knowledge platform that indexes enterprise data across documents, applications, and repositories. It enables teams to find information, answer questions, and retrieve context from internal sources with unified search that connects siloed data into a single queryable system.

operand.com

SEO + AEO + E-E-A-T combined

41%

Audited March 03, 2026 · 4 pages analyzed

Overall Scores

Area	Score	Grade
SEO	62%	C
AEO (AI Visibility)	20%	F
E-E-A-T	26%	F
Combined	41%	—

Fastest way to fix your site is to use our Custom Connector for Claude Desktop, or other IDEs.

E-E-A-T Breakdown

Signal	Score	Issue
Trustworthiness	43%	No about/team page links detected, No privacy policy link detected, 6 security headers missing, No terms of service link detected, 1/4 contact signals found
Expertise	13%	1 words, 0 headings, 0 outbound links
Authoritativeness	20%	No Organization JSON-LD schema found, No JSON-LD schema types detected, No third-party review signals detected
Experience	0%	No social proof signals detected, Freshness issues, No headings found on page, No first-hand experience signals detected

Stobo finds what's broken and generates the fixes

Claude Desktop MCP integration settings showing how to add a custom MCP server

Try these in Claude Desktop

stobo my site: operand.com

stobo this article: operand.com/blog/my-article

Generate a robots.txt for operand.com

stobo my blog: operand.com/blog

Recommendations

llms.txt not found (server returned HTML instead of text) AEO
Create an llms.txt file so AI models can understand what operand.com does. Stobo generates one automatically.
```
Generate an llms.txt for operand.com
```
No opening content found AEO
Add a direct answer in the first 40-60 words of the page. AI engines pull from the opening paragraph.
```
stobo this site: operand.com
```
Freshness issues: no date signals found AEO
Add date markup (datePublished, dateModified) so AI engines know content is current. Stobo generates the JSON-LD.
```
Generate freshness code for operand.com
```

Track your score over time

We'll re-audit your site in 7 days and email you what changed. Free, automatic.

Embed your audit badge

Show your score on your README or website.

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Frequently asked questions

Why is my llms.txt file returning HTML instead of plain text?: Your llms.txt file isn't configured properly and returns HTML content instead of plain text. This prevents AI systems from reading your site's instructions. You need to create a proper text file at the /llms.txt endpoint with correct MIME type headers.
What does it mean when no opening content is found?: Your pages lack clear opening content that directly answers user queries. This hurts your chances of appearing in AI-generated responses and featured snippets. Add concise, answer-focused content at the beginning of your pages.
How do missing date signals affect my website's search performance?: Search engines can't determine when your content was created or updated without date signals. This impacts freshness rankings and user trust. Add publication dates, last modified timestamps, or structured data to show content recency.
Why is having an H1 tag critical for my pages?: Missing H1 tags hurt your SEO because they're the primary heading that tells search engines what your page is about. Every page needs exactly one H1 tag that clearly describes the main topic or purpose.
Can outdated content without dates hurt my search engine rankings?: Yes, content without clear publication or update dates can rank lower in search results. Search engines prefer fresh, recently updated content for many queries. Adding visible dates helps both users and search engines assess content relevance.

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