# Tanstack — Agent Score

> Score: 76/100 (Grade: C) | Docs: https://tanstack.com/router/latest/docs/overview | Checked: April 6, 2026

Tanstack scored 76/100 (C) on Agent Score. 13 of 22 agent-readiness checks passed.

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

## Summary

- Total checks: 22
- Passed: 13
- Warnings: 4
- Failed: 4

## Category Scores

- page-size: 88/100
- observability: 33/100
- url-stability: 84/100
- authentication: 100/100
- content-structure: 100/100
- markdown-availability: 59/100
- content-discoverability: 68/100

## Check Results

### content-discoverability

- [pass] llms.txt found at 1 location(s)
- [pass] llms.txt follows the proposed structure (H1, blockquote, heading-delimited link sections)
- [pass] llms.txt is 20,411 characters (under 50,000 threshold)
- [pass] All 10 same-origin sampled links resolve (35 total links)
- [warn] Same-origin links point to HTML, but 7 have .md variants available (16 external links excluded)
- [fail] No llms.txt directive found in any of 10 sampled pages

### markdown-availability

- [warn] 7/10 sampled pages support .md URLs (70%); inconsistent support
- [warn] Content negotiation partially supported: 4 correct type, 0 wrong type, 6 HTML only

### page-size

- [pass] All 10 sampled pages contain server-rendered content
- [pass] All 7 pages under 50K chars (median 4K, max 5K)
- [fail] 3 of 10 sampled pages convert to over 100K chars (max 214K, 41% boilerplate)
- [warn] 2 of 10 sampled pages have content starting at 10–50% (worst 30%)

### content-structure

- [pass] No tabbed content detected across 10 sampled pages
- [pass] No tabbed content found; header quality check not applicable
- [pass] All 3 code fences properly closed across 8 pages

### url-stability

- [fail] 2 of 8 sampled pages return 200 for non-existent URLs (soft 404); 2 failed to fetch
- [pass] All 3 redirect(s) across 10 sampled pages are same-host HTTP redirects

### observability

- [fail] llms.txt covers 0/1 sitemap doc pages (0%); 1 missing
- [pass] All 7 pages have equivalent markdown and HTML content (avg 0% missing)
- [pass] All 11 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