> ## Documentation Index > Fetch the complete documentation index at: https://docs.wiremock.io/llms.txt > Use this file to discover all available pages before exploring further. # Set mock API certificate settings > Set the certificate settings for a mock API. These settings are used to configure the cryptographic handlebars helpers, [`sign`](/response-templating/cryptographic-helpers#signing) and [`x509Certificate`](/response-templating/cryptographic-helpers#x-509-certificate). ## OpenAPI ````yaml /api-reference/openapi.yaml put /v1/mock-apis/{mockApiId}/settings/certificate openapi: 3.1.0 info: title: WireMock Cloud description: The public API for WireMock Cloud contact: email: help@wiremock.io version: 1.0.0 license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html servers: - url: https://wmc.wiremockapi.cloud description: Mock - url: https://api.wiremock.cloud description: Production security: - tokenAuth: [] tags: - name: Users description: User accounts - name: Teams description: Teams - name: Organisations description: Organisations - name: Usage description: Product usage - name: Mock APIs description: Mock APIs - name: Mock API versioning description: Mock API versioning - name: Data sources description: Data sources - name: Database connections description: Database connections - name: Security description: Security - name: Access control description: Access control / authorisation - name: API templates description: API template library - name: Jobs description: Background jobs e.g. OpenAPI import - name: OpenAPI description: OpenAPI description - name: Settings description: Mock API configuration settings - name: Stub Mappings description: Operations on stub mappings externalDocs: description: User documentation url: https://wiremock.org/docs/stubbing/ - name: Requests description: Logged requests and responses received by the mock service externalDocs: description: User documentation url: https://wiremock.org/docs/verifying/ - name: Recordings description: Stub mapping record and snapshot functions externalDocs: description: User documentation url: https://wiremock.org/docs/record-playback/ - name: State description: Scenarios support modelling of stateful behaviour externalDocs: description: User documentation url: https://wiremock.org/docs/stateful-behaviour/ - name: Imports description: Importing into your mock API - name: Mock Hosts description: Mock API hosts paths: /v1/mock-apis/{mockApiId}/settings/certificate: parameters: - $ref: '#/components/parameters/mockApiId' put: tags: - Settings summary: Set mock API certificate settings description: > Set the certificate settings for a mock API. These settings are used to configure the cryptographic handlebars helpers, [`sign`](/response-templating/cryptographic-helpers#signing) and [`x509Certificate`](/response-templating/cryptographic-helpers#x-509-certificate). operationId: updateMockApiCertificateSettings requestBody: required: true content: application/json: schema: type: object properties: certificate: type: object required: - rsa256PublicKey - rsa256PrivateKey - x509Certificate - hmacSecret properties: rsa256PublicKey: type: string description: RSA public key in PEM format. rsa256PrivateKey: type: string description: RSA private key in PEM format. x509Certificate: type: string description: X.509 certificate in PEM format. hmacSecret: type: string description: A non-empty secret key. example: certificate: rsa256PublicKey: |- -----BEGIN RSA PUBLIC KEY----- MIIBIjANBg...kCAwEAAQ== -----END RSA PUBLIC KEY----- rsa256PrivateKey: |- -----BEGIN RSA PRIVATE KEY----- MIIEvQIBAD...eXuQIDAQAB -----END RSA PRIVATE KEY----- x509Certificate: |- -----BEGIN CERTIFICATE----- MIICpDCCAY...AwggEKAgEA -----END CERTIFICATE----- hmacSecret: sup3r-s3cr3t-hmac-k3y responses: '200': description: Settings successfully updated content: application/json: schema: type: object properties: certificate: type: object required: - rsa256PublicKey - rsa256PrivateKey - x509Certificate - hmacSecret properties: rsa256PublicKey: type: string description: The updated RSA public key. rsa256PrivateKey: type: string description: The updated RSA private key. x509Certificate: type: string description: The updated X.509 certificate. hmacSecret: type: string description: The updated HMAC secret key. example: certificate: rsa256PublicKey: |- -----BEGIN RSA PUBLIC KEY----- MIIBIjANBg...kCAwEAAQ== -----END RSA PUBLIC KEY----- rsa256PrivateKey: |- -----BEGIN RSA PRIVATE KEY----- MIIEvQIBAD...eXuQIDAQAB -----END RSA PRIVATE KEY----- x509Certificate: |- -----BEGIN CERTIFICATE----- MIICpDCCAY...AwggEKAgEA -----END CERTIFICATE----- hmacSecret: sup3r-s3cr3t-hmac-k3y '400': $ref: '#/components/responses/400' '401': $ref: '#/components/responses/401' '403': $ref: '#/components/responses/403' '404': $ref: '#/components/responses/404' '422': $ref: '#/components/responses/422' components: parameters: mockApiId: in: path name: mockApiId description: The ID of the Mock API required: true schema: $ref: '#/components/schemas/IdSchema' responses: '400': description: 400 Bad Request response content: application/json: schema: $ref: '#/components/schemas/Errors' example: errors: - title: Invalid query parameter format detail: The offset parameter value must be a positive integer '401': description: 401 Unauthenticated response content: text/plain: schema: type: string example: Credentials are required to access this resource. '403': description: 403 Unauthorized response content: application/json: schema: $ref: '#/components/schemas/Errors' example: errors: - title: Forbidden source: {} '404': description: 404 Not Found response content: application/json: schema: type: object properties: code: type: integer message: type: string required: - message example: code: 404 message: HTTP 404 Not Found '422': description: 422 Bad Entity response content: application/json: schema: $ref: '#/components/schemas/Errors' example: errors: - title: Invalid JSON detail: >- json pointer /mockApi not present; it is required and must have json type object source: {} schemas: IdSchema: type: string minLength: 5 maxLength: 10 example: jjl8y Errors: type: object properties: errors: type: array items: $ref: '#/components/schemas/SingleError' required: - errors SingleError: type: object properties: code: type: number title: type: string detail: type: string source: type: object required: - title securitySchemes: tokenAuth: type: apiKey in: header name: Authorization description: >- Your [API key](https://app.wiremock.cloud/account/security) prefixed by 'Token ' ````