known·good search mcp servers how we grade about the index

search / documentation / docs.slng.ai

SLNG Documentation

docs.slng.ai · visit site →

Probe-verified · tier 2 · checked 23 Aug 2026

SLNG provides a real-time voice execution layer API integrating multiple speech models for text-to-speech, speech-to-text, and voice agents.

voice ai apivia mintlifytext-to-speechspeech-to-textvoice agentsapi

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 slng.main-kill-isr.mintlify.me — the standard set for sites on mintlify.

search_slng_documentationquery_docs_filesystem_slng_documentationsubmit_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
register“Get started here”
query_api“send your first request by hand”
https://api.slng.ai/v1/
contact“Contact support”

Context

4 sites in the index share the category voice ai api, of which 2 are transactional.

How we grade

Three tiers. Every listing shows which one it has reached, and when. The rubric.

tier 1
Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
✓
tier 2
Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
this site · 23 Aug 2026
tier 3
Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
coming
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

Cartesia Docs
Cartesia provides an API for real-time, multimodal AI voice experiences including text-to-
voice ai api
Kallglot API
Kallglot API provides real-time multilingual voice AI including translation, transcription
voice ai api
Penciled API Docs
Documentation site for Penciled API providing generative voice AI agents for healthcare wi
voice ai api
Aptos Documentation
Aptos Developer Documentation provides guides, SDKs, and tools to build Web3 applications
blockchain developer documentation
Aptos Documentation
Aptos Documentation provides developer guides, SDKs, tools, and APIs to build Web3 applica
blockchain developer documentation
engineering.teamstation.dev
Distributed Engineering Operating System doctrine for CTOs using TeamStation AI, Axiom Cor
engineering doctrine
Quran Foundation Documentation Portal
API documentation portal for Quran Foundation offering content, user, and OAuth2 APIs for
api documentation
Quran Foundation Documentation Portal
API documentation portal for Quran Foundation providing content, user, and OAuth2 APIs for
api documentation

Record generated from a live database query. Method: about the index.