What we tested
Probed live on 23 Aug 2026 against rubric v1. 5 of 5 checks passed.
PROBE-VERIFIEDtier 2 of 3
✓Markdown negotiationAccept: text/markdown
✓Markdown twin at a predictable URL/page.md
✓llms.txt/llms.txt
✓API catalogRFC 9727
✓MCP server answers/.well-known/mcp/server-card.json → tools/list
What an agent could do here
Read from the page’s own content, with the wording each was drawn from. Inference is kept separate from tested facts — an agent completing the action is tier 3.
UNVERIFIED
query_api“One API to search, crawl, and ingest the real-time web”https://api.search1api.com/openapi.json
contact“Contact Search1API: https://s1.dev/contact”https://s1.dev/contact
register“New accounts start with 100 free credits”https://s1.dev/auth.md
Context
4 sites in the index share the category web search api, of which 2 are transactional.
How we grade
Three tiers. Every listing shows which one it has reached, and when. The rubric.
tier 1Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
tier 2Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
tier 3Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
Own this site?
Behavioural verification — an agent completing your booking, purchase or contact flow end to end, with the date published here — opens to a small founding cohort first. Leave an email to be in it.
Related verified sites
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web search api Olostep DocsOlostep provides a web search, scraping, and crawling API for AI agents with CLI and MCP s
web search api VibeMarketologRussian AI marketing platform offering agents for advertising, analytics, and sales with 2
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ai video summarization tool MewayzMewayz is an all-in-one business management platform offering over 144 modules including C
business management platform BibiGPTBibiGPT is an AI tool that summarizes and transcribes audiovisual content from multiple pl
ai video summarization tool Record generated from a live database query. Method: about the index.