> ## Documentation Index
> Fetch the complete documentation index at: https://slng.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# API Reference

> Every SLNG endpoint, grouped by capability: the Unified API, the Execution layer, text-to-speech, speech-to-text, voice agents, batch, and orchestrator bridges.

Every SLNG endpoint, grouped by capability. Pick a section to see request and response details, or start with the Unified API to reach any provider through one request shape.

> **[Unified API](https://slng.mintlify.site/api-reference/unified-api/unmute-stt-bridge/unmute-stt-bridge-http.md)**
>
> One request shape for every STT and TTS model. Swap providers by changing the URL. Includes parameter coverage and supported models.

> **[Text-to-Speech](https://slng.mintlify.site/api-reference/tts/rime-arcana-v3/arcana-v3-english-http.md)**
>
> Per-provider TTS endpoints over HTTP and WebSocket, plus pronunciation dictionaries.

> **[Speech-to-Text](https://slng.mintlify.site/api-reference/stt/deepgram-nova-3/nova-3-english-http.md)**
>
> Per-provider STT endpoints for file transcription and real-time streaming.

> **[Managed Agents](https://slng.mintlify.site/api-reference/agents/list-agents.md)**
>
> Create, configure, and dispatch SLNG voice agents, including outbound calls.

> **[Agent Resources](https://slng.mintlify.site/examples/agents-config.md#tools)**
>
> Create and publish shared tools, connect MCP servers, manage Vault entries, and register client models.

> **[Batch](https://slng.mintlify.site/api-reference/batch.md)**
>
> Submit and manage large transcription and synthesis jobs asynchronously.

> **[Bridges](https://slng.mintlify.site/api-reference/bridges/cognigy-stt-bridge/cognigy-stt-bridge-http.md)**
>
> Connect Cognigy and Jambonz voice platforms to SLNG STT and TTS.


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