# Vellum — Agent Score

> Score: 59/100 (Grade: F) | Docs: https://www.vellum.ai/docs | Checked: April 6, 2026

Vellum scored 59/100 (F) on Agent Score. 8 of 22 agent-readiness checks passed.

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

## Summary

- Total checks: 22
- Passed: 8
- Warnings: 0
- Failed: 5

## Category Scores

- page-size: 95/100
- observability: 100/100
- url-stability: 100/100
- authentication: 100/100
- content-structure: 100/100
- markdown-availability: 0/100
- content-discoverability: 0/100

## Check Results

### content-discoverability

- [fail] No llms.txt found at any candidate location (https://www.vellum.ai/docs/llms.txt, https://www.vellum.ai/llms.txt)
- [skip] Skipped: dependency check did not pass
- [skip] Skipped: dependency check did not pass
- [skip] Skipped: dependency check did not pass
- [skip] Skipped: dependency check did not pass
- [fail] No llms.txt directive found in any of 10 sampled pages

### markdown-availability

- [fail] No sampled pages support .md URLs (0/10 tested)
- [fail] Server ignores Accept: text/markdown header (0/10 sampled pages return markdown)

### page-size

- [pass] All 10 sampled pages contain server-rendered content
- [skip] Skipped: dependency check did not pass
- [fail] 1 of 10 sampled pages convert to over 100K chars (max 136K, 22% boilerplate)
- [pass] Content starts within first 10% on all 10 sampled pages (median 3%)

### content-structure

- [pass] No tabbed content detected across 10 sampled pages
- [pass] No tabbed content found; header quality check not applicable
- [skip] Site does not serve markdown content; nothing to analyze

### url-stability

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

### observability

- [skip] Skipped: dependency check did not pass
- [skip] Skipped: dependency check did not pass
- [pass] All 10 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