> ## Documentation Index > Fetch the complete documentation index at: https://docs.mx.com/llms.txt > Use this file to discover all available pages before exploring further. # (Deprecated) Member credentials > This endpoint has been deprecated and should no longer be used. Use the update member endpoint to update a member when the member's connection_status is DENIED. Use the resume aggregation endpoint to answer an MFA challenge. This endpoint was part of a deprecated workflow that required several requests be made to add credentials and resume aggregation. A newer, simpler, and more reliable workflow is now available, as outlined in the [Nexus guide](/api-reference/nexus/overview). This endpoint is still supported for existing integrations, but all partners are encouraged to use the ## OpenAPI ````yaml openapi/nexus/v1.yaml POST /members/{member_guid}/credentials openapi: 3.0.0 info: contact: name: Nexus API url: https://www.mx.com version: 1.0.0 title: Nexus API description: >- Legacy clients can use Nexus API for all their connectivity needs. If you are a new client refer to our Platform API. Review our [Nexus API Guides](/nexus) for more information. servers: - url: https://int-data.moneydesktop.com/ - url: https://data.moneydesktop.com/ security: - sessionToken: [] tags: - name: accounts - name: beats - name: budgets - name: categories - name: extended transaction history - name: goals - name: holdings - name: identity - name: insights - name: institutions - name: jobs - name: member credentials - name: members - name: merchants - name: microdeposits - name: monthly cash flow profile - name: notifications - name: scheduled payments - name: sessions - name: spending plan - name: taggings - name: tags - name: transaction rules - name: transactions - name: user - name: verification paths: /members/{member_guid}/credentials: post: tags: - member credentials summary: (Deprecated) Member credentials description: >- This endpoint has been deprecated and should no longer be used. Use the update member endpoint to update a member when the member's connection_status is DENIED. Use the resume aggregation endpoint to answer an MFA challenge. This endpoint was part of a deprecated workflow that required several requests be made to add credentials and resume aggregation. A newer, simpler, and more reliable workflow is now available, as outlined in the [Nexus guide](/nexus/). This endpoint is still supported for existing integrations, but all partners are encouraged to use the operationId: createMemberCredentials parameters: - name: member_guid description: The unique identifier for the member. Defined by MX. required: true in: path schema: type: string requestBody: content: application/vnd.mx.nexus.v1+json: schema: $ref: '#/components/schemas/MemberCredentialRequestBody' responses: '200': description: OK content: application/vnd.mx.nexus.v1+json: schema: $ref: '#/components/schemas/MemberCredentialResponseBody' components: schemas: MemberCredentialRequestBody: properties: member: $ref: '#/components/schemas/MemberCredentialRequest' type: object MemberCredentialResponseBody: properties: member_credential: $ref: '#/components/schemas/MemberCredentialResponse' type: object MemberCredentialRequest: type: object properties: credential_guid: type: string example: CRD-18cd14ce-2628-5eb6-ae17-b11f89d0b667 description: >- GUID for the institution credential needed to be created for the member. value: type: string example: user-entered-value description: >- Response for the credential prompt. IE - enter the username, password, and MFA question required by the institution. metadata: type: string example: Additional information required: - credential_guid - value MemberCredentialResponse: properties: guid: description: The unique identifier for the member credential. Defined by MX. example: MCR-1b2f1146-d54f-510f-84fc-b4cb61cfdcff type: string credential_guid: description: The unique identifier for the credential. Defined by MX. example: CRD-19d57512-81e3-1136-b84e-0c46b62a5d7a type: string member_guid: description: The unique identifier for the member. Defined by MX. example: MBR-7aa13bdb-2866-ba38-b326-d9fb32268f9b type: string created_at: description: >- Date and time the member credential was created, represented in ISO 8601 format with timestamp. example: '2013-05-02T11:19:35.000Z' type: string updated_at: description: >- Date and time the member credential was last updated, represented in ISO 8601 format with timestamp. example: '2013-05-02T11:19:35.000Z' type: string metadata: description: Additional information a partner can store on the member credential. example: Additional information type: string securitySchemes: sessionToken: description: > ### MX Session Token - Request an API token using the read API token endpoint in the MX SSO API. - Exchange an API token for a session token. - A session token is obtained by sending a POST request to /sessions - The session token will be used in each request made for the user. It should be passed in an `MD-SESSION-TOKEN` HTTP header as shown below. - This session token is valid for 30 minutes from the time it was created. The 30 minute expiration counter is refreshed with each call. - If you send a request with an expired session token you'll receive an error code of `4011`. ``` curl -i https://int-data.moneydesktop.com/accounts \ -H 'MD-SESSION-TOKEN: CWforZl1Vn2vC_v6H4rnQRT1DoWpDouJAV-_5TBmiQRAtA8rsOG_BoajTiOSsL0A3bd-bmHXlA-eQzc9ywItKg' \ -H 'Content-Type: application/vnd.mx.nexus.v1+json' \ -H 'Accept: application/vnd.mx.nexus.v1+json' ``` In documentation code examples, replace `` with the session token. type: apiKey name: MD-SESSION-TOKEN in: header ````