SLNG Catalog API

openapi: 3.0.3
info:
  title: SLNG Voice Agents Account Catalog API
  version: 1.0.0
  description: 'Public API for managing Voice Agents, dispatching outbound calls, and creating web (non-telephony) sessions.


    Base URL: `https://api.agents.slng.ai`

    '
  contact:
    name: SLNG Support
    email: support@slng.ai
servers:
- url: https://api.agents.slng.ai
  description: Production
security:
- bearerAuth: []
tags:
- name: Catalog
  description: Discover and inspect available models in the SLNG catalog.
paths:
  /v1/catalog/models:
    get:
      operationId: catalog-models-list
      summary: List catalog models
      description: 'List the models available in the SLNG catalog. Supports filtering by service type, provider, region, language, use case, capability, and protocol, plus full-text search and pagination. Authentication is optional — an API key personalizes pricing and region availability for your organisation; anonymous requests return public catalog data.

        '
      tags:
      - Catalog
      security:
      - {}
      - BearerAuth: []
      parameters:
      - $ref: '#/components/parameters/CatalogServiceType'
      - $ref: '#/components/parameters/CatalogLanguage'
      - $ref: '#/components/parameters/CatalogProviderFilter'
      - $ref: '#/components/parameters/CatalogRegion'
      - $ref: '#/components/parameters/CatalogUseCase'
      - $ref: '#/components/parameters/CatalogCapability'
      - $ref: '#/components/parameters/CatalogProtocol'
      - $ref: '#/components/parameters/CatalogSlngHostedOnly'
      - $ref: '#/components/parameters/CatalogSearch'
      - $ref: '#/components/parameters/CatalogPage'
      - $ref: '#/components/parameters/CatalogPageSize'
      responses:
        '200':
          $ref: '#/components/responses/CatalogModelListSuccess'
        '400':
          $ref: '#/components/responses/CatalogBadRequest'
  /v1/catalog/models/{model_code}:
    get:
      operationId: catalog-models-detail
      summary: Get a catalog model
      description: 'Retrieve a single model from the SLNG catalog by its code. The code may contain slashes and colons (for example `slng/rime/arcana:3-en`). Authentication is optional — an API key personalizes pricing and region availability for your organisation.

        '
      tags:
      - Catalog
      security:
      - {}
      - BearerAuth: []
      parameters:
      - $ref: '#/components/parameters/CatalogModelCode'
      - $ref: '#/components/parameters/CatalogProtocol'
      responses:
        '200':
          $ref: '#/components/responses/CatalogModelDetailSuccess'
        '400':
          $ref: '#/components/responses/CatalogBadRequest'
        '404':
          $ref: '#/components/responses/CatalogNotFound'
components:
  parameters:
    CatalogSlngHostedOnly:
      name: slng_hosted_only
      in: query
      required: false
      description: When true, return only SLNG-hosted models. Accepts `true`, `false`, `1`, or `0`.
      schema:
        type: boolean
    CatalogServiceType:
      name: service_type
      in: query
      required: false
      description: Filter models by service type.
      schema:
        type: string
        enum:
        - stt
        - tts
    CatalogModelCode:
      name: model_code
      in: path
      required: true
      description: 'The model code to retrieve. May contain slashes and colons (for example `slng/rime/arcana:3-en`).

        '
      schema:
        type: string
    CatalogRegion:
      name: region
      in: query
      required: false
      description: Filter models by region code (for example `eu-north-1`).
      schema:
        type: string
    CatalogSearch:
      name: search
      in: query
      required: false
      description: Full-text search across model names and descriptions.
      schema:
        type: string
        maxLength: 200
    CatalogProviderFilter:
      name: provider
      in: query
      required: false
      description: Filter models by provider code (for example `rime`).
      schema:
        type: string
    CatalogCapability:
      name: capability
      in: query
      required: false
      description: Filter models by capability tag.
      schema:
        type: string
    CatalogPage:
      name: page
      in: query
      required: false
      description: The page number to return (1-based). Defaults to 1.
      schema:
        type: integer
        minimum: 1
        maximum: 10000
        default: 1
    CatalogLanguage:
      name: language
      in: query
      required: false
      description: Filter models by supported language code (for example `en`).
      schema:
        type: string
    CatalogPageSize:
      name: page_size
      in: query
      required: false
      description: The number of items per page. Defaults to 20.
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 20
    CatalogProtocol:
      name: protocol
      in: query
      required: false
      description: Filter models by supported protocol.
      schema:
        type: string
        enum:
        - https
        - wss
    CatalogUseCase:
      name: use_case
      in: query
      required: false
      description: Filter models by use case tag.
      schema:
        type: string
  responses:
    CatalogBadRequest:
      description: 'The request was invalid. Returned for unsupported query parameters, out-of-range values, or a malformed model code.

        '
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/CatalogError'
          examples:
            unsupported-parameter:
              summary: Unsupported query parameter
              value:
                error: 'Unsupported query parameter: foo'
            invalid-page:
              summary: Page out of range
              value:
                error: page must be between 1 and 10000
            invalid-model-code:
              summary: Malformed model code
              value:
                error: Invalid model code
    CatalogModelDetailSuccess:
      description: A single catalog model.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/CatalogModel'
          example:
            code: slng/rime/arcana:3-en
            name: Arcana V3 English
            service_type: tts
            provider_code: rime
            provider:
              name: Rime
              logo_url: https://assets.slng.ai/provider-logos/rime-9d9ccf23.jpg
              code: rime
              created_at: 2026-03-25 12:43:28.731000+00:00
              updated_at: 2026-04-14 16:14:02.621000+00:00
            hosted_by: slng
            short_description: Ultra-realistic, expressive voices with low latency and native multilingual code-switching.
            long_description: Arcana v3 delivers low-latency conversational TTS with multilingual code-switching and word-level timestamps.
            best_for: Voice Assistants, Business Telephony, IVR, TTS
            use_cases:
            - Call centers
            - voice assistant
            - IVR
            capabilities:
            - Streaming
            - Expressiveness
            - Latency
            languages:
            - en
            streaming: true
            batch: false
            voice_count: 0
            api_path: /v1/tts/slng/rime/arcana:3-en
            docs_url: https://docs.slng.ai/api-reference/endpoints/rime-arcana-v3/arcana-v3-english-http
            tags: []
            available_regions:
            - ap-southeast-2
            - asia-south1
            - eu-north-1
            region_details:
            - code: ap-southeast-2
              country: Australia
              world_part_code: au
              latency_ms: 240
            supported_protocols:
            - https
            - wss
            voices: []
            similar_models:
            - code: slng/deepgram/aura:2-en
              name: Aura 2 English
              service_type: ''
            pricing:
              min_price: 100
              unit: microdollars_per_min
    CatalogNotFound:
      description: No model matches the requested code.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/CatalogError'
          example:
            error: Model not found
    CatalogModelListSuccess:
      description: A paginated list of catalog models.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/CatalogModelListResponse'
          example:
            items:
            - code: slng/rime/arcana:3-en
              name: Arcana V3 English
              service_type: tts
              provider_code: rime
              provider:
                name: Rime
                logo_url: https://assets.slng.ai/provider-logos/rime-9d9ccf23.jpg
                code: rime
                created_at: 2026-03-25 12:43:28.731000+00:00
                updated_at: 2026-04-14 16:14:02.621000+00:00
              hosted_by: slng
              short_description: Ultra-realistic, expressive voices with low latency and native multilingual code-switching.
              long_description: Arcana v3 delivers low-latency conversational TTS with multilingual code-switching and word-level timestamps.
              best_for: Voice Assistants, Business Telephony, IVR, TTS
              use_cases:
              - Call centers
              - voice assistant
              - IVR
              capabilities:
              - Streaming
              - Expressiveness
              - Latency
              languages:
              - en
              streaming: true
              batch: false
              voice_count: 0
              api_path: /v1/tts/slng/rime/arcana:3-en
              docs_url: https://docs.slng.ai/api-reference/endpoints/rime-arcana-v3/arcana-v3-english-http
              tags: []
              available_regions:
              - ap-southeast-2
              - asia-south1
              - eu-north-1
              region_details:
              - code: ap-southeast-2
                country: Australia
                world_part_code: au
                latency_ms: 240
              supported_protocols:
              - https
              - wss
              voices: []
              similar_models:
              - code: slng/deepgram/aura:2-en
                name: Aura 2 English
                service_type: ''
              pricing:
                min_price: 100
                unit: microdollars_per_min
            meta:
              page: 1
              page_size: 20
              total: 26
              pages: 2
  schemas:
    CatalogSimilarModel:
      type: object
      description: A reference to a model similar to the current one.
      required:
      - code
      - name
      properties:
        code:
          type: string
          description: The similar model's code.
          example: slng/deepgram/aura:2-en
        name:
          type: string
          description: The similar model's display name.
          example: Aura 2 English
        provider_name:
          type: string
          nullable: true
          description: The similar model's provider name, when available.
        service_type:
          type: string
          description: The similar model's service type.
        description:
          type: string
          nullable: true
          description: A short description of the similar model, when available.
    CatalogVoice:
      type: object
      description: A voice available for a TTS model.
      required:
      - voice_id
      - name
      properties:
        voice_id:
          type: string
          description: The voice identifier used when invoking the model.
          example: aura-2-hestia-nl
        name:
          type: string
          description: The voice's display name.
          example: Hestia
        gender:
          type: string
          description: The perceived gender of the voice.
          example: feminine
        tone:
          type: string
          description: A description of the voice's tone.
          example: Approachable, Caring, Expressive, Friendly, Knowledgeable
        use_case:
          type: string
          description: The use case the voice is suited for.
          example: Customer Service
        age_range:
          type: string
          description: The perceived age range of the voice.
          example: Adult
        language:
          type: string
          description: The language code of the voice.
          example: nl
        preview_url:
          type: string
          description: A URL to an audio preview of the voice.
        properties:
          type: object
          description: Additional provider-specific voice properties.
          additionalProperties: true
        sort_order:
          type: integer
          description: The order the voice should be displayed in.
          example: 0
        enabled:
          type: boolean
          description: Whether the voice is currently enabled.
          example: true
        id:
          type: string
          description: The internal voice record identifier.
          example: 4383102e-0e22-4018-8b38-988be2cd70fa
        model_code:
          type: string
          description: The code of the model the voice belongs to.
          example: deepgram/aura:2
        created_at:
          type: string
          format: date-time
          description: When the voice record was created.
        updated_at:
          type: string
          format: date-time
          description: When the voice record was last updated.
    CatalogError:
      type: object
      description: An error returned by the catalog endpoints.
      required:
      - error
      properties:
        error:
          type: string
          description: A human-readable error message.
          example: Model not found
    CatalogPricing:
      type: object
      description: Pricing information for a catalog model.
      required:
      - min_price
      - unit
      properties:
        min_price:
          type: integer
          description: The minimum price for the model, in the given unit.
          example: 100
        unit:
          type: string
          description: The unit the price is expressed in.
          example: microdollars_per_min
    CatalogCodeExamples:
      type: object
      description: Ready-to-run code examples for invoking the model in different languages.
      properties:
        curl:
          type: string
          description: A cURL example.
        python:
          type: string
          description: A Python example.
        typescript:
          type: string
          description: A TypeScript example.
    CatalogRegionDetail:
      type: object
      description: Availability and latency/pricing detail for a model in a single region.
      required:
      - code
      properties:
        code:
          type: string
          description: The region code.
          example: ap-southeast-2
        country:
          type: string
          description: The country the region is located in.
          example: Australia
        world_part_code:
          type: string
          description: The world part the region belongs to.
          example: au
        latency_ms:
          type: integer
          nullable: true
          description: Measured latency to the region in milliseconds, when available.
          example: 240
        price:
          type: number
          nullable: true
          description: The price for using the model in this region, when available.
        discounted_price:
          type: number
          nullable: true
          description: The discounted price for your organisation, when applicable.
    CatalogModel:
      type: object
      description: A single model in the SLNG catalog.
      required:
      - code
      - name
      - service_type
      - provider_code
      - provider
      properties:
        code:
          type: string
          description: The unique model code used to address the model in API paths.
          example: slng/rime/arcana:3-en
        name:
          type: string
          description: Human-readable display name.
          example: Arcana V3 English
        service_type:
          type: string
          description: The service type the model provides.
          enum:
          - stt
          - tts
          example: tts
        provider_code:
          type: string
          description: The code of the model's provider.
          example: rime
        provider:
          $ref: '#/components/schemas/CatalogProvider'
        hosted_by:
          type: string
          nullable: true
          description: Who hosts the model — `slng` for SLNG-hosted models, otherwise the third-party provider name.
          example: slng
        short_description:
          type: string
          description: A short one-line description of the model.
        long_description:
          type: string
          description: A longer description of the model and its capabilities.
        best_for:
          type: string
          description: A summary of the use cases the model is best suited for.
        use_cases:
          type: array
          description: Tags describing common use cases.
          items:
            type: string
          example:
          - Call centers
          - voice assistant
          - IVR
        capabilities:
          type: array
          description: Capability tags for the model.
          items:
            type: string
          example:
          - Streaming
          - Expressiveness
          - Latency
        languages:
          type: array
          description: Language codes the model supports.
          items:
            type: string
          example:
          - en
        streaming:
          type: boolean
          description: Whether the model supports streaming.
          example: true
        batch:
          type: boolean
          description: Whether the model supports batch (non-streaming) processing.
          example: false
        accuracy:
          type: number
          nullable: true
          description: Reported accuracy score, when available.
        voice_count:
          type: integer
          description: The number of voices available for the model (TTS only).
          example: 0
        api_path:
          type: string
          description: The API path used to invoke the model.
          example: /v1/tts/slng/rime/arcana:3-en
        code_example:
          type: string
          description: A ready-to-run code example (cURL) for invoking the model.
        code_examples:
          $ref: '#/components/schemas/CatalogCodeExamples'
        docs_url:
          type: string
          description: A link to the model's documentation page.
          example: https://docs.slng.ai/api-reference/endpoints/rime-arcana-v3/arcana-v3-english-http
        tags:
          type: array
          description: Free-form tags associated with the model.
          items:
            type: string
        available_regions:
          type: array
          description: Region codes where the model is available.
          items:
            type: string
          example:
          - ap-southeast-2
          - asia-south1
          - eu-north-1
        region_details:
          type: array
          description: Per-region availability and latency/pricing details.
          items:
            $ref: '#/components/schemas/CatalogRegionDetail'
        supported_protocols:
          type: array
          description: The protocols the model can be invoked over.
          items:
            type: string
            enum:
            - https
            - wss
          example:
          - https
          - wss
        voices:
          type: array
          description: The voices available for the model (TTS only).
          items:
            $ref: '#/components/schemas/CatalogVoice'
        similar_models:
          type: array
          description: Models similar to this one.
          items:
            $ref: '#/components/schemas/CatalogSimilarModel'
        pricing:
          $ref: '#/components/schemas/CatalogPricing'
    CatalogProvider:
      type: object
      description: The provider that owns a catalog model.
      required:
      - name
      - code
      properties:
        name:
          type: string
          description: The provider's display name.
          example: Rime
        code:
          type: string
          description: The provider's code.
          example: rime
        website:
          type: string
          nullable: true
          description: The provider's website, if known.
        logo_url:
          type: string
          nullable: true
          description: A URL to the provider's logo.
          example: https://assets.slng.ai/provider-logos/rime-9d9ccf23.jpg
        created_at:
          type: string
          format: date-time
          description: When the provider record was created.
        updated_at:
          type: string
          format: date-time
          description: When the provider record was last updated.
    CatalogModelListResponse:
      type: object
      description: Paginated list of catalog models.
      required:
      - items
      - meta
      properties:
        items:
          type: array
          description: The models on the current page.
          items:
            $ref: '#/components/schemas/CatalogModel'
        meta:
          $ref: '#/components/schemas/CatalogPaginationMeta'
    CatalogPaginationMeta:
      type: object
      description: Pagination metadata for a catalog listing.
      required:
      - page
      - page_size
      - total
      - pages
      properties:
        page:
          type: integer
          description: The current page number (1-based).
          example: 1
        page_size:
          type: integer
          description: The number of items per page.
          example: 20
        total:
          type: integer
          description: The total number of models matching the query.
          example: 26
        pages:
          type: integer
          description: The total number of pages available.
          example: 2
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API key