What we tested
Probed live on 23 Aug 2026 against rubric v1. 2 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 dubverseai.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_dubverse_aiquery_docs_filesystem_dubverse_aisubmit_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
query_api“POST https://audio.dubverse.ai/api/tts”https://audio.dubverse.ai/api/tts
contact“contact our support team at support@dubverse.ai”mailto:support@dubverse.ai
register“Create Your Dubverse Account”
Context
8 sites in the index share the category text-to-speech api, of which 6 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?
3 checks did not pass when we last looked: Markdown negotiation, Markdown twin at a predictable URL, 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
Audixa DocumentationAudixa provides a Text-to-Speech API with multiple voices, languages, and an asynchronous
text-to-speech api Deepdub DocumentationDocumentation for Deepdub's Text-to-Speech API offering voice cloning, accent control, and
text-to-speech api DesiVocalDesiVocal provides API documentation including authentication and API reference for text-t
text-to-speech api Uplift AI API DocsUplift AI provides APIs for natural Urdu text-to-speech with real-time streaming and multi
text-to-speech api KugelAudioKugelAudio offers a text-to-speech API supporting 26 languages with EU hosting and GDPR co
text-to-speech api SuonoraSuonora provides a text-to-speech API with natural-sounding voice synthesis, multiple lang
text-to-speech api ResponsiveVoiceResponsiveVoice provides a modern text-to-speech toolkit with TypeScript support and 100+
text-to-speech api Aptos DocumentationAptos Developer Documentation provides guides, SDKs, and tools to build Web3 applications
blockchain developer documentation Record generated from a live database query. Method: about the index.