Circle

developers.circle.com
Score: 95 out of 100, grade A95
Grade A
Last checked: April 2, 2026 · Rerun
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Simulation: Fern // bud
Day 0
CategoryCommunication
Checks passed15/22Warnings0Failed5

Circle scores 95/100 (Grade A), placing it among the most AI-agent-ready documentation sites evaluated. It passes 15 of 22 checks (68%), demonstrating strong support for AI coding agents. 5 items require attention to reach a perfect score.

# Agent Score Fix Report — Circle
URL: https://developers.circle.com/
Score: 95/100 (Grade A)

I need help improving the AI-readiness of the documentation at https://developers.circle.com/.
Agent Score found 5 failing checks and 0 warnings.

## Failing Checks (5)
- [page-size] Page Size Markdown: 1 of 10 pages exceed 100K chars (max 154K)
- [page-size] Page Size Html: 1 of 10 sampled pages convert to over 100K chars (max 154K, 0% boilerplate)
- [content-structure] Tabbed Content Serialization: 5 tab group(s) found; worst page serializes to 153K chars (over 100K)
- [observability] Llms Txt Freshness: llms.txt covers 72/605 sitemap doc pages (12%); 533 missing; 10 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)
- [observability] Markdown Content Parity: 1 of 10 pages have substantive content differences between markdown and HTML (avg 5% missing)



## Fix Instructions

For each issue above, please:
1. Analyze the documentation site at https://developers.circle.com/
2. Implement the specific fix
3. Verify the fix would cause the check to pass

### Common fixes:
- **No llms.txt**: Create /llms.txt following https://llmstxt.org — list all doc pages in markdown format
- **No .md URL support**: Configure your docs platform to serve pages at equivalent .md URLs (e.g. /docs/quickstart.md)
- **No content negotiation**: Return markdown when request includes Accept: text/markdown header
- **Large page size**: Reduce nav boilerplate, inline scripts, and repetitive markup
- **No sitemap**: Generate /sitemap.xml listing all documentation URLs
- **Auth walls**: Ensure docs pages return 200 without requiring login cookies or tokens
- **No Last-Modified header**: Configure your server/CDN to include Last-Modified response headers
- **Tab content hidden**: Ensure tabbed content is rendered in the HTML (not JS-only) so agents can read all variants

## Run afdocs Locally for More Detail

To get deeper visibility into what's failing, run afdocs against your docs:

  npx afdocs https://developers.circle.com/ --fixes --verbose

- **--fixes**: Adds "Fix:" lines to the output for each warn/fail check with actionable remediation steps
- **-v, --verbose**: Shows per-page details (specific URLs, character counts, error codes) for checks with issues — useful for per-URL visibility into what's failing
CHECK RESULTS

How your docs scored

tabbed-content-serialization5 tab group(s) found; worst page serializes to 153K chars (over 100K)
markdown-code-fence-validityAll 44 code fences properly closed across 11 pages
section-header-quality2 page(s) with tabs found, but no section headers inside tab panels to evaluate
llms-txt-freshnessllms.txt covers 72/605 sitemap doc pages (12%); 533 missing; 10 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)
markdown-content-parity1 of 10 pages have substantive content differences between markdown and HTML (avg 5% missing)
cache-header-hygieneAll 11 endpoints have appropriate cache headers
page-size-markdown1 of 10 pages exceed 100K chars (max 154K)
page-size-html1 of 10 sampled pages convert to over 100K chars (max 154K, 0% boilerplate)
rendering-strategyAll 10 sampled pages contain server-rendered content
content-start-positionContent starts within first 10% on all 10 sampled pages (median 0%)
auth-gate-detectionAll 10 sampled pages are publicly accessible
auth-alternative-accessAll docs pages are publicly accessible; no alternative access paths needed
llms-txt-existsllms.txt found at 1 location(s)
llms-txt-validllms.txt follows the proposed structure (H1, blockquote, heading-delimited link sections)
llms-txt-sizellms.txt is 14,913 characters (under 50,000 threshold)
llms-txt-links-resolveAll 10 same-origin sampled links resolve (95 total links)
llms-txt-links-markdown10/10 same-origin sampled links point to markdown content (100%) (13 external links excluded)
llms-txt-directivellms.txt directive found in all 10 sampled pages, near the top of content
markdown-url-support10/10 sampled pages support .md URLs (100%)
content-negotiation10/10 sampled pages support content negotiation (100%)
http-status-codesAll 10 sampled pages return proper error codes for bad URLs
redirect-behaviorAll 1 redirect(s) across 10 sampled pages are same-host HTTP redirects

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