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

# List Providers

> Get all available STT, LLM, and TTS providers with their supported models

## Overview

Retrieve a list of all available providers and their supported models. Use this endpoint to understand which provider/model combinations you can use when creating or updating agents.

### Provider Types

| Type    | Description    | Providers                                  |
| ------- | -------------- | ------------------------------------------ |
| **STT** | Speech-to-Text | DEEPGRAM, WHISPER                          |
| **LLM** | Language Model | OPENAI, ANTHROPIC, GOOGLE, GROK            |
| **TTS** | Text-to-Speech | CARTESIA, ELEVENLABS, SARVAM, GOOGLE, HUME |

## Authentication

<ParamField header="X-API-Key" type="string" required>
  Your eigi.ai API key. Must be prefixed with `vk_`.
</ParamField>

## Response

<ResponseField name="llm" type="object">
  Dictionary of LLM providers mapped to their available models.

  Example: `{"OPENAI": ["gpt-4o", "gpt-4o-mini"], "ANTHROPIC": ["claude-sonnet-4-20250514"]}`
</ResponseField>

<ResponseField name="tts" type="object">
  Dictionary of TTS providers mapped to their available models.
</ResponseField>

<ResponseField name="stt" type="object">
  Dictionary of STT providers mapped to their available models.
</ResponseField>

<ResponseField name="timestamp" type="string">
  ISO 8601 response timestamp.
</ResponseField>


## OpenAPI

````yaml GET /v1/public/providers
openapi: 3.0.0
info:
  title: eigi.ai API
  description: REST API for managing AI voice agents and conversations
  version: 1.0.0
  contact:
    email: buddy@eigi.ai
    url: https://eigi.ai
servers:
  - url: https://api.eigi.ai
    description: Production server
security:
  - ApiKeyAuth: []
paths:
  /v1/public/providers:
    get:
      tags:
        - Utilities
      summary: List Providers
      description: >-
        Get all available STT, LLM, and TTS providers with their supported
        models. Use this to understand available options when configuring
        agents.
      operationId: listProviders
      responses:
        '200':
          description: Successfully retrieved providers
          content:
            application/json:
              schema:
                type: object
                properties:
                  llm:
                    type: object
                    description: LLM providers with their models
                    example:
                      OPENAI:
                        - gpt-4o
                        - gpt-4o-mini
                      ANTHROPIC:
                        - claude-sonnet-4-20250514
                  tts:
                    type: object
                    description: TTS providers with their models
                  stt:
                    type: object
                    description: STT providers with their models
                  timestamp:
                    type: string
                    format: date-time
        '401':
          description: Unauthorized - Invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - ApiKeyAuth: []
components:
  schemas:
    Error:
      type: object
      properties:
        detail:
          type: string
          description: Error message
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: >-
        API key for authentication. Get your API key from the eigi.ai Dashboard
        under Settings → API Keys.

````