# Square — Agent Score

> Score: 56/100 (Grade: F) | Docs: https://developer.squareup.com/docs | Checked: April 30, 2026

Square scored 56/100 (F) on Agent Score. 9 of 23 agent-readiness checks passed.

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

## Summary

- Total checks: 23
- Passed: 9
- Warnings: 1
- Failed: 9

## Category Scores

- page-size: 90/100
- observability: 68/100
- url-stability: 100/100
- authentication: 100/100
- content-structure: 100/100
- markdown-availability: 0/100
- content-discoverability: 28/100

## Check Results

### content-discoverability

- [pass] llms.txt found at https://developer.squareup.com/llms.txt
- [warn] llms.txt contains parseable links but doesn't fully follow the proposed structure: https://developer.squareup.com/llms.txt: No H1 heading found, No blockquote summary found
- [fail] llms.txt is 104,117 characters (exceeds 100,000 threshold; will be truncated by most agents)
- [fail] Only 0/10 same-origin sampled links resolve (0%); 10 broken
- [fail] Same-origin links point to HTML and no markdown alternatives detected; 3 rate-limited (HTTP 429)
- [fail] No llms.txt directive found in HTML of any of 5 sampled pages; 5 failed to fetch
- [fail] Could not fetch markdown for any of 10 pages; 10 had no markdown version

### 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); 3 rate-limited (HTTP 429)

### page-size

- [pass] All 10 sampled pages contain server-rendered content
- [skip] Skipped: dependency check did not pass
- [pass] All 10 sampled pages under 50K chars (median 241K HTML → 16K markdown (74% boilerplate))
- [fail] 3 of 10 sampled pages have content starting past 50% (worst 66%)

### content-structure

- [pass] 7 tab group(s) across 2 of 10 sampled pages; all serialize under 50K chars
- [skip] 2 page(s) with tabs found, but no section headers inside tab panels to evaluate
- [pass] All 0 code fences properly closed across 1 pages

### url-stability

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

### observability

- [fail] llms.txt covers 448/872 sitemap doc pages (51%); 424 missing; 24 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)
- [skip] Skipped: dependency check did not pass
- [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