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. 3 tools, served from sanitizeemail.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_sanitize_email_api_docsquery_docs_filesystem_sanitize_email_api_docssubmit_feedback
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“Email: support@sanitizeemail.com”mailto:support@sanitizeemail.com
register“Get Your API Key”https://app.sanitizeemail.com/api-key
query_api“Validate email addresses for syntax, domain, deliverability with REST API”https://base.sanitizeemail.com/v1/api/email-validation/
Context
5 sites in the index share the category email validation 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?
1 check did not pass when we last looked: API catalog. 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
Email-Check.appEmail-Check.app provides a real-time email validation API for signup flows, CRM hygiene, l
email validation api DeBounce APITechnical overview and documentation of the DeBounce email validation API for developers.
email validation api Cleariflow APICleariflow API provides an email validation service that checks email deliverability, form
email validation api ValidKitValidKit provides a real-time email validation API with under 200ms response times for sig
email validation api Aptos DocumentationAptos Developer Documentation provides guides, SDKs, and tools to build Web3 applications
blockchain developer documentation Aptos DocumentationAptos Documentation provides developer guides, SDKs, tools, and APIs to build Web3 applica
blockchain developer documentation engineering.teamstation.devDistributed Engineering Operating System doctrine for CTOs using TeamStation AI, Axiom Cor
engineering doctrine Record generated from a live database query. Method: about the index.