> ## Documentation Index > Fetch the complete documentation index at: https://docs.engini.ai/llms.txt > Use this file to discover all available pages before exploring further. # List the applications an auth provider can be created for. > Published connectors with at least one authentication method that allows auth providers, and for each method the "Set on provider" fields to fill. Field definitions only: no values. Requires permission to create auth providers. ## OpenAPI ````yaml /developers/api-reference/openapi.json get /v1/auth-providers/sources openapi: 3.0.0 info: title: Engini API version: v1 description: The Engini public API. servers: - url: https://api.engini.io security: - Bearer: [] - ApiKey: [] tags: - name: Auth description: Identify the caller a Developer API request is authenticated as. - name: On-prem agents description: >- Provision and manage agents that run Engini tasks inside a customer's network. - name: Applications description: >- Discover the applications (toolkits) available in Engini and their connection requirements. - name: Tools description: Browse and execute the tools exposed by Engini applications. - name: Toolsets description: Manage toolsets - named groupings of connections and tools. - name: McpServers description: >- Inspect and maintain MCP servers - the account-wide endpoints that expose Engini tools and workflows over the Model Context Protocol. Distinct from the MCPClient connection kind, which is Engini consuming a third-party MCP server. - name: Connections description: >- Manage connections to applications, including OAuth sign-in and default-connection selection. - name: Triggers description: >- Create triggers that fire when something changes in a connected app, and manage the destinations their events are delivered to. paths: /v1/auth-providers/sources: get: tags: - AuthProviders summary: List the applications an auth provider can be created for. description: >- Published connectors with at least one authentication method that allows auth providers, and for each method the "Set on provider" fields to fill. Field definitions only: no values. Requires permission to create auth providers. operationId: AuthProviders_ListSources parameters: [] responses: '200': description: The eligible applications and methods. content: application/json: schema: type: array items: $ref: '#/components/schemas/AuthProviderSourceApplication' '400': description: Bad request - malformed body or invalid parameters. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized - missing or invalid bearer token or API key. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: Forbidden - the caller lacks access to the resource. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Not found - the resource does not exist. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '429': description: Too many requests - rate limit exceeded. headers: Retry-After: description: Number of seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error - an unexpected error occurred. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - Bearer: [] - ApiKey: [] x-codeSamples: - lang: python label: Python source: |- from engini import Engini client = Engini() # reads ENGINI_API_KEY sources = client.auth_providers.sources() - lang: typescript label: TypeScript source: |- import { Engini } from "@engini/sdk"; const client = new Engini(); // reads ENGINI_API_KEY const sources = await client.authProviders.sources(); - lang: bash label: CLI source: engini connections auth-providers sources --json components: schemas: AuthProviderSourceApplication: type: object description: >- An application with at least one authentication method that allows auth providers. additionalProperties: false required: - applicationId - methods properties: applicationId: type: integer description: The application (published connector) id. format: int32 applicationName: type: string description: The application's name. nullable: true applicationLogo: type: string description: The application's logo file. nullable: true methods: type: array description: The methods an auth provider can be based on. items: $ref: '#/components/schemas/AuthProviderSourceMethod' ErrorResponse: type: object description: >- Unified machine-readable error envelope returned by every non-200 Developer API response. additionalProperties: false required: - errorCode - message - requestId - timestamp properties: errorCode: type: string description: Machine-readable error code identifying the failure. message: type: string description: Human-readable error message. requestId: type: string description: Identifier of the request, for support/correlation. timestamp: type: string description: Timestamp when the error occurred (ISO 8601). details: type: array description: Per-field validation details, when applicable. nullable: true items: $ref: '#/components/schemas/ErrorDetail' AuthProviderSourceMethod: type: object description: An authentication method an auth provider can be based on. additionalProperties: false required: - authenticationId - authenticationType - fields properties: authenticationId: type: integer description: The method's authentication id. format: int32 displayName: type: string description: The method's display name. nullable: true authenticationType: description: The method's effective authentication type. oneOf: - $ref: '#/components/schemas/AuthenticationTypeEnum' fields: type: array description: >- The method's "Set on provider" connection fields, filled on the provider. items: $ref: '#/components/schemas/AuthProviderFieldDefinition' ErrorDetail: type: object description: A single field-level error detail within an ErrorResponse. additionalProperties: false required: - field - issue properties: field: type: string description: Name of the field the issue relates to. issue: type: string description: Description of the issue with the field. AuthenticationTypeEnum: type: integer description: '' x-enumNames: - NoAuthentication - Basic - Bearer - ApiKey - OAuth2 - JWT - OAuth2WithoutSignIn - OAuth1 enum: - 0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 AuthProviderFieldDefinition: type: object description: A connection field the connector author marked "Set on provider". additionalProperties: false required: - slot - isPassword - isRequired - isReadOnly - inputType - minValue - maxValue properties: slot: type: string description: >- The connection slot the value fills: Key1..Key10, ApiUser, ApiPassword or BaseUrl. label: type: string description: The field's label. nullable: true tooltip: type: string description: Help text for the field. nullable: true placeholder: type: string description: Placeholder text for the field. nullable: true isPassword: type: boolean description: >- A secret - the connector marks the field a password or masks it in logs: write-only, stored encrypted, never returned. isRequired: type: boolean description: The provider cannot be active without a value. isReadOnly: type: boolean description: The field cannot be edited. inputType: description: The field's input type. oneOf: - $ref: '#/components/schemas/AppConnectionFieldInputType' minValue: type: integer description: Minimum (number fields) or minimum length. format: int32 maxValue: type: integer description: Maximum (number fields) or maximum length. format: int32 AppConnectionFieldInputType: type: integer description: '' x-enumNames: - text - number - list - multiline enum: - 0 - 1 - 2 - 3 securitySchemes: Bearer: type: http description: Enter your JWT token scheme: bearer bearerFormat: JWT ApiKey: type: apiKey description: >- Opaque Developer API key (prefix `eng_`). Authenticates as the key's owner and resolves the account automatically. name: x-api-key in: header ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.