Sarvam models, languages and voices available to an agent
The legal values for an agent speech stack, fetched from the provider rather than hardcoded — so this changes without a deploy and every list here is an OPEN set. 🔴 A voice belongs to a specific model version: the (ttsModel, ttsVoice) pair is the constraint, not the voice name, and each speaker names the model it belongs to. A retired voice is marked deprecated rather than removed, so an agent already using one keeps working.
Requires the read scope. A key with less gets 403 insufficient_scope.
Authorization: Bearer tone_live_… or tone_test_…. The prefix IS the environment: a test key reaches only the sandbox, and no request field bridges the two.
In: header
Response Body
application/json
application/json
application/json
application/json
application/json
curl -X GET "https://example.com/v1/catalog/voice"{ "data": { "defaultAgentLanguages": [ "en-IN", "hi-IN" ], "fetchedAt": "2026-08-25T04:00:00Z", "languageNames": {}, "llm": { "defaults": { "model": "gemini-2.5-flash" }, "models": [ { "deprecated": true, "description": "Latest speech model. Adds `temperature`; drops `pitch` and `loudness`.", "id": "gemini-2.5-flash", "label": "Bulbul v3", "provider": "gemini" } ] }, "previewSamples": {}, "source": "spec", "stt": { "autoDetect": "auto", "defaults": { "language": "auto", "mode": "transcribe", "model": "saaras:v3" }, "languages": [ "en-IN", "hi-IN", "gu-IN", "ta-IN" ], "models": [ { "deprecated": true, "description": "Latest speech model. Adds `temperature`; drops `pitch` and `loudness`.", "id": "saaras:v3", "label": "Bulbul v3", "supportsModes": true } ], "modes": [ { "description": "Transcribes faithfully in the language spoken, without translating.", "id": "transcribe", "label": "Bulbul v3" } ] }, "tts": { "defaults": { "model": "bulbul:v3", "speaker": "anushka" }, "languages": [ "en-IN", "hi-IN", "gu-IN" ], "models": [ { "deprecated": true, "description": "Latest speech model. Adds `temperature`; drops `pitch` and `loudness`.", "id": "bulbul:v3", "label": "Bulbul v3", "options": [ { "default": 1, "description": "Latest speech model. Adds `temperature`; drops `pitch` and `loudness`.", "key": "pace", "label": "Bulbul v3", "max": 2, "min": 0.5, "step": 0.1 } ] } ], "sampleRates": [ 8000, 16000, 22050 ], "speakers": [ { "deprecated": true, "gender": "female", "id": "simran", "label": "Bulbul v3", "models": [ "bulbul:v3" ] } ] }, "version": "c7f2a9e1b4d6" }}Version history, newest first
Versions are kept forever. Each entry is exactly what ran on the calls pinned to it.
Import a public web page into a knowledge base
Fetches and indexes a URL rather than a file. Must be reachable from the open internet; private and link-local addresses are refused, and refused again after DNS resolution.