# Twilio — Agent Score

> Score: 78/100 (Grade: C) | Docs: https://docs.sendgrid.com | Checked: April 3, 2026

Twilio scored 78/100 (C) on Agent Score. 10 of 22 agent-readiness checks passed.

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

## Summary

- Total checks: 22
- Passed: 10
- Warnings: 8
- Failed: 3

## Check Results

### content-discoverability

- [warn] llms.txt found but only reachable via cross-host redirect (agents may not follow it)
- [warn] llms.txt contains parseable links but doesn't fully follow the proposed structure: https://www.twilio.com/llms.txt: No H1 heading found, No blockquote summary found
- [fail] llms.txt is 2,192,437 characters (exceeds 100,000 threshold; will be truncated by most agents)
- [pass] All 10 same-origin sampled links resolve (7120 total links)
- [pass] 10/10 same-origin sampled links point to markdown content (100%)
- [warn] llms.txt directive found in 7 of 10 sampled pages, but buried deep in the page (past 50%)

### markdown-availability

- [pass] 10/10 sampled pages support .md URLs (100%)
- [pass] 10/10 sampled pages support content negotiation (100%)

### page-size

- [pass] All 10 sampled pages contain server-rendered content
- [warn] 1 of 10 pages between 50K–100K chars (max 88K)
- [warn] 1 of 10 sampled pages convert to 50K–100K chars (max 88K, 0% boilerplate)
- [warn] 1 of 10 sampled pages have content starting at 10–50% (worst 35%)

### content-structure

- [pass] No tabbed content detected across 10 sampled pages
- [pass] No tabbed content found; header quality check not applicable
- [pass] All 156 code fences properly closed across 11 pages

### url-stability

- [fail] 8 of 10 sampled pages return 200 for non-existent URLs (soft 404)
- [pass] No redirects detected across 10 sampled pages

### observability

- [warn] llms.txt covers 7119/8052 sitemap doc pages (88%); 933 missing; 1400 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)
- [fail] 2 of 10 pages have substantive content differences between markdown and HTML (avg 8% missing)
- [warn] 9 of 11 endpoints have moderate cache lifetimes (1–24 hours)

### authentication

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