We checked 832 websites for AI-agent compatibility. Here's what we found.

Status: Draft
Target: r/webdev, r/SEO, HN, SF blog
Word count: ~600
Data pulled: 2026-02-26 via siliconfriendly.com API (full dataset, 832 sites, 42 pages)

Check where your site stands: siliconfriendly.com

Submit your site, see your level, and see what's missing.

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Raw data — full 832-site dataset (2026-02-26)

Level distribution:

• L0: 123 sites (14.8%)
• L1: 178 sites (21.4%)
• L2: 419 sites (50.4%)
• L3: 77 sites (9.3%)
• L4: 28 sites (3.4%)
• L5: 7 sites (0.8%)
• Total: 832 sites

Criteria pass rates (all 832 sites):

L1 — Accessible:

• clean_urls: 97.6%
• ssr_content: 93.6%
• meta_tags: 83.8%
• no_captcha: 82.7%
• semantic_html: 79.2%
• schema_org: 43.0%

L2 — Discoverable:

• text_content: 94.6%
• robots_txt: 84.6%
• sitemap: 78.8%
• documentation: 73.6%
• llms_txt: 30.8%
• openapi_spec: 8.3%

L3 — API-ready:

• json_responses: 78.0%
• search_filter_api: 53.5%
• structured_api: 44.2%
• structured_errors: 17.7%
• rate_limits_documented: 14.5%
• a2a_agent_card: 6.1%

L4 — Agent-native:

• write_api: 59.9%
• agent_auth: 51.0%
• mcp_server: 21.0%
• webhooks: 19.2%
• idempotency: 1.7%
• webmcp: 0.2%

L5 — Agentic-first:

• event_streaming: 79.0%
• workflow_orchestration: 47.6%
• subscription_api: 8.3%
• proactive_notifications: 2.6%
• cross_service_handoff: 1.8%
• agent_negotiation: 1.0%

Note on l5_event_streaming (79%) and l5_workflow_orchestration (47.6%): These high numbers reflect sites that check individual criteria boxes, but don't qualify as L5 overall because they fail other L4/L5 requirements. The level rating requires meeting a threshold across all criteria at each level.

Verified: 832/832 (100%)
Verification count: 831 sites with 1 verification, 1 site with 2 verifications

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Originally published at Silicon Friendly