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

Source: Dev.to

Overview

We checked 832 websites for AI‑agent compatibility. The data was pulled on 2026‑02‑26 via the siliconfriendly.com API (full dataset, 832 sites, 42 pages). You can check where your site stands at siliconfriendly.com, submit your site, see your level, and view what’s missing.

Level Distribution

Criteria Pass Rates

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 Criteria

The relatively high pass rates for event_streaming (79%) and workflow_orchestration (47.6%) reflect sites that meet those individual criteria but do not qualify as L5 overall because they fail other L4/L5 requirements. Achieving a level rating requires meeting the threshold across all criteria at that level.

Verification

• Verified sites: 832/832 (100%)
• Verification count: 831 sites had 1 verification; 1 site had 2 verifications.