What we tested
Probed live on 23 Aug 2026 against rubric v1. 4 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 its MCP server offers
We connected, ran tools/list, and recorded what came back on 23 Aug 2026. 5 tools.
search_api_docssearch_webhook_docssearch_guidesread_doclist_api_sections
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
contact“Contact: https://www.surfboardpayments.com/contact”https://www.surfboardpayments.com/contact
Context
9 sites in the index share the category payments platform, of which 8 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?
1 check did not pass when we last looked: Markdown twin at a predictable URL. Each is a small, specific fix; the rubric says exactly what we look for.
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
RazorpayRazorpay is an Indian finance platform enabling businesses to accept payments, make payout
payments platform NiumNium provides a global payments platform enabling real-time cross-border money transfers,
payments platform NiumNium provides a global payments platform enabling businesses to send, receive, and convert
payments platform FedaPayFedaPay is an online payment platform enabling businesses and individuals to collect payme
payments platform PagosDocumentation for Pagos platform offering payments data monitoring, optimization, and APIs
payments platform Waffo PancakeWaffo Pancake is a SaaS platform that handles global payments, taxes, compliance, and payo
payments platform FedaPayFedaPay is an online payment platform offering payment collection, Mobile Money deposits,
payments platform Record generated from a live database query. Method: about the index.