# Clerk — Agent Score

> Score: 74/100 (Grade: C) | Docs: https://clerk.com/docs | Checked: April 2, 2026

Clerk scored 74/100 (C) on Agent Score. 12 of 22 agent-readiness checks passed.

[View full report](https://buildwithfern.com/agent-score/company/clerk)
[All companies](https://buildwithfern.com/agent-score/llms.txt)

## Summary

- Total checks: 22
- Passed: 12
- Warnings: 4
- Failed: 4

## Check Results

### content-discoverability

- [pass] llms.txt found at 2 location(s)
- [warn] llms.txt contains parseable links but doesn't fully follow the proposed structure: https://clerk.com/docs/llms.txt: No blockquote summary found
- [fail] llms.txt is 297,392 characters (exceeds 100,000 threshold; will be truncated by most agents)
- [pass] All 10 same-origin sampled links resolve (2459 total links)
- [pass] 9/10 same-origin sampled links point to markdown content (90%)
- [fail] No llms.txt directive found in any of 10 sampled pages

### markdown-availability

- [warn] 8/10 sampled pages support .md URLs (80%); inconsistent support
- [warn] Content negotiation partially supported: 7 correct type, 0 wrong type, 3 HTML only

### page-size

- [pass] All 10 sampled pages contain server-rendered content
- [pass] All 8 pages under 50K chars (median 4K, max 18K)
- [fail] 10 of 10 sampled pages convert to over 100K chars (max 628K, 27% boilerplate)
- [pass] Content starts within first 10% on all 10 sampled pages (median 2%)

### content-structure

- [pass] 1 tab group(s) across 1 of 10 sampled pages; all serialize under 50K chars
- [skip] 1 page(s) with tabs found, but no section headers inside tab panels to evaluate
- [pass] All 9 code fences properly closed across 10 pages

### url-stability

- [pass] All 10 sampled pages return proper error codes for bad URLs
- [pass] No redirects detected across 10 sampled pages

### observability

- [warn] llms.txt covers 2022/2213 sitemap doc pages (91%); 191 missing
- [fail] 6 of 8 pages have substantive content differences between markdown and HTML (avg 23% missing)
- [pass] All 12 endpoints have appropriate cache headers

### authentication

- [pass] All 10 sampled pages are publicly accessible
- [skip] All docs pages are publicly accessible; no alternative access paths needed