generated: '2026-07-21'
method: searched
source: https://maas.unisound.com/docs/api/overview
standards:
- id: openai-chat-completions
  conforms: true
  evidence: 'Token Hub documents an OpenAI-compatible chat completions endpoint (POST
    https://maas-api.unisound.com/v1/chat/completions) and an OpenAI-compatible GET
    models list; docs: https://maas.unisound.com/docs/api/text/openai-compatible'
- id: anthropic-messages
  conforms: true
  evidence: 'Token Hub documents an Anthropic Messages-compatible endpoint (POST
    https://maas-api.unisound.com/anthropic/v1/messages, x-api-key header, message_start/content_block_delta
    streaming events); docs: https://maas.unisound.com/docs/api/text/anthropic-compatible'
- id: oauth2
  conforms: false
  evidence: No OAuth 2.0 surface documented; Bearer API keys and SHA-256 signature
    authentication only.
- id: oidc
  conforms: false
  evidence: No OpenID Connect discovery documents on any probed host (all /.well-known
    probes returned 404 or SPA catch-all pages).
- id: rfc9457-problem-details
  conforms: false
  evidence: Errors use vendor envelopes (HTTP status + business error code; errorCode
    on the legacy platform), not application/problem+json.
- id: idempotency
  conforms: false
  evidence: No idempotency-key mechanism documented.
- id: websocket-streaming
  conforms: true
  evidence: One-shot and real-time speech recognition use WSS endpoints (wss://ws-osasr.hivoice.cn/v1/asr
    and Token Hub WSS ASR endpoints).
regulatory_filings:
- id: cn-icp-filing
  value: 京ICP备12032250号-2
  evidence: Published in the Token Hub site footer.
- id: cn-algorithm-filing
  value: 网信算备110108172572101230023号
  evidence: China algorithm registry filing published in the Token Hub site footer.
- id: cn-model-filing
  value: Beijing-ShanHai-20231205
  evidence: LLM filing number for the Shanhai model published in the Token Hub site
    footer.