AsyncAPI channel · SLNG
· SLNG Gateway API - SLNG STT
/v1/stt/slng/deepgram/nova:3-es
Stream real-time Spanish speech-to-text from SLNG-hosted Deepgram Nova 3 over WebSocket with low-latency partial and final transcripts and VAD.
Channel address
/v1/stt/slng/deepgram/nova:3-es
Messages
SlngDeepgramNova3EsSttInitRequest
Initialize an SLNG-hosted Deepgram Nova 3 Spanish STT session.
Content-Type:
application/jsonDeepgramSttBinaryAudio
Stream raw binary PCM audio frames to be transcribed. Sent as binary WebSocket frames (NOT JSON). Recommended chunk size is 8192 bytes (~256ms at 16kHz linear16). Start streaming immediately after the
Content-Type:
application/octet-streamSttFinalizeMessage
Force-finalize buffered audio tokens without closing the connection.
Content-Type:
application/jsonSttCloseMessage
Signal end of audio stream and close the connection.
Content-Type:
application/jsonKeepaliveMessage
Keep the WebSocket connection alive during silence.
Content-Type:
application/jsonDeepgramSttMetadata
Deepgram session metadata. Sent when the backend connects and again after the session ends with final statistics. This is informational — do not wait for it before streaming audio.
Content-Type:
application/jsonDeepgramSttResultsEs
Deepgram transcription result — partial or final, determined by is_final.
Content-Type:
application/jsonDeepgramSttError
Error from the Deepgram backend or gateway.
Content-Type:
application/jsonAbout AsyncAPI
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
Browse every event-driven channel on the APIs.io network or compare with the broader Agent Skill and MCP server surfaces of the same providers.