openapi: 3.2.0 info: title: Atlar API (v2) OAuth API description: Atlar API (v2) version: '0.1' contact: email: support@atlar.com license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.txt servers: - url: https://api.atlar.com tags: - name: OAuth description: OAuth 2.0 endpoints. x-displayName: OAuth paths: /iam/v2/oauth2/token: post: summary: Create OAuth 2.0 access token description: 'This endpoint is an OAuth 2.0 token endpoint and can be used by a client to obtain an access token. Use programmatic access user credentials as OAuth 2.0 client credentials. Use the access key as client identifier (`client_id`). Use the secret as client password (`client_secret`). This endpoint supports authentication using HTTP Basic auth. Supported grant types: client_credentials for programmatic access users. authorization_code (with PKCE) and refresh_token for MCP CIMD clients.' security: - basicAuth: [] tags: - OAuth requestBody: description: OAuth 2.0 request parameters. required: true content: application/x-www-form-urlencoded: schema: type: object properties: grant_type: type: string enum: - client_credentials - authorization_code - refresh_token client_id: type: string client_secret: type: string code: description: Authorization code returned by the authorization endpoint. Required for `grant_type=authorization_code`. type: string code_verifier: description: PKCE code verifier matching the `code_challenge` sent at the authorization endpoint. Required for `grant_type=authorization_code`. type: string refresh_token: description: Refresh token previously issued by this endpoint. Required for `grant_type=refresh_token`. type: string required: - grant_type responses: '200': description: Successful OAuth 2.0 access token response. content: application/json: schema: $ref: '#/components/schemas/OAuth2AccessTokenResponse' '400': description: Invalid access token request. content: application/json: schema: $ref: '#/components/schemas/OAuth2ErrorResponse' '401': description: Client authentication failed. content: application/json: schema: $ref: '#/components/schemas/OAuth2ErrorResponse' operationId: postIamV2Oauth2Token x-operation-id-source: derived components: schemas: OAuth2ErrorResponse: description: OAuth 2.0 error response. externalDocs: url: https://datatracker.ietf.org/doc/html/rfc6749#section-5.2 type: object properties: error: description: OAuth 2.0 error code. See a RFC 6749 for details. type: string enum: - invalid_request - invalid_client - invalid_grant - unauthorized_client - unsupported_grant_type error_description: description: Human readable description of the error. type: string example: unsupported grant type required: - error additionalProperties: false OAuth2AccessTokenResponse: description: Successful OAuth 2.0 access token response. externalDocs: url: https://datatracker.ietf.org/doc/html/rfc6749#section-4.4.3 type: object properties: access_token: type: string example: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.e30.Xi9Rplok2DNmNGBPC1CMxUY-ZBkzY-g-sxqzKkWjViU token_type: type: string example: Bearer expires_in: description: The lifetime in seconds of the access token. type: integer format: int64 example: 299 refresh_token: description: 'Opaque OAuth 2.0 refresh token that the client can use to obtain a new access token. Only present when the authorization server issued one for the grant. ' type: string required: - access_token - token_type additionalProperties: false securitySchemes: basicAuth: type: http scheme: basic x-tagGroups: - name: Atlar Accounting API tags: - Documents - GL Entities - GL Accounts - name: Atlar Analytics API tags: - Forecasted Transactions - name: Atlar Connectivity API tags: - Connections - name: Atlar Payments API tags: - Credit Transfers - Direct Debits - External Accounts - Counterparties - Mandates - Events (webhooks) - Regulatory Reporting - name: Atlar Financial Data API tags: - Accounts - Transactions - Pending Transactions - Entities - Investments - name: Atlar IAM API tags: - OAuth - Audit logs - name: Atlar Platform API tags: - Webhooks x-provenance: method: searched source: https://docs.atlar.com/reference harvested: '2026-10-14' tool: harvest-readme-openapi.py note: Assembled verbatim from the OpenAPI definition ReadMe embeds in each operation page of the provider's developer portal; paths and components merged by API title, nothing authored. assembled_from: - 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