> ## Documentation Index > Fetch the complete documentation index at: https://docs.chainloop.dev/llms.txt > Use this file to discover all available pages before exploring further. # Creates and attestation from a piece of content > This endpoint is used to create an attestation for a piece of content, such as a file or a blob. The provided content is stored in the configured storage backend ## OpenAPI ````yaml https://api.app.chainloop.dev/openapi.yaml post /v1/attestations openapi: 3.0.1 info: contact: email: support@chainloop.dev name: Chainloop Support url: https://chainloop.dev termsOfService: https://chainloop.dev/terms title: Chainloop Platform API version: '1.0' servers: - url: https://api.app.chainloop.dev/ security: - bearerToken: [] tags: - description: AI-powered agent operations name: AgentsService - name: ArtifactService - name: AssessmentService - description: Service for polling the status of asynchronous operations name: AsyncOperationsService - name: AttestationsService - name: PolicyService - name: ComplianceService - name: ComponentService - name: EnvironmentsService - name: EvidenceService - name: FindingService - name: LogicalEnvironmentsService - name: ProductsService - name: ProjectsService - name: UserService externalDocs: description: Chainloop Official Documentation url: https://docs.chainloop.dev paths: /v1/attestations: post: tags: - AttestationsService summary: Creates and attestation from a piece of content description: >- This endpoint is used to create an attestation for a piece of content, such as a file or a blob. The provided content is stored in the configured storage backend operationId: AttestationsService_Create requestBody: content: application/json: schema: $ref: '#/components/schemas/v1AttestationsServiceCreateRequest' description: Request to create and store an attestation required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/v1AttestationsServiceCreateResponse' description: A successful response. '400': content: application/json: schema: $ref: '#/components/schemas/v1BadRequestResponse' description: Bad Request - The request was invalid or cannot be served. '401': content: application/json: schema: $ref: '#/components/schemas/v1UnauthorizedResponse' description: Unauthorized - Authentication is required. '403': content: application/json: schema: $ref: '#/components/schemas/v1PermissionDeniedResponse' description: Forbidden - You do not have permission to access this resource. '500': content: application/json: schema: $ref: '#/components/schemas/v1InternalServerErrorResponse' description: Internal Server Error - An unexpected error occurred on the server. default: content: application/json: schema: $ref: '#/components/schemas/rpcStatus' description: An unexpected error response. components: schemas: v1AttestationsServiceCreateRequest: description: Request to create and store an attestation properties: name: description: >- The name of the material in the attestation, in RFC 1123 label format (lowercase letters, numbers, and hyphens). type: string content: format: byte pattern: ^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$ title: The content to attest, typically a file or a blob type: string project_name: description: >- The project name for project-scoped attestations. If omitted, Org Admin role will be required. RBAC will be applied otherwise. type: string title: AttestationsServiceCreateRequest type: object v1AttestationsServiceCreateResponse: description: Response for the attestation creation request example: attestation: digest: digest id: id properties: attestation: $ref: '#/components/schemas/v1Attestation' title: AttestationsServiceCreateResponse type: object v1BadRequestResponse: description: Response for bad request example: code: 0 details: - details - details message: message properties: code: default: 3 description: >- The error code indicating the type of error. It's fixed to 3, which is the code for INVALID_ARGUMENT. format: int32 type: integer message: description: A human-readable message providing more details about the error. type: string details: description: Additional details about the error. items: type: string type: array required: - code - message title: BadRequestResponse type: object v1UnauthorizedResponse: description: Response for unauthorized access example: code: 6 details: - details - details message: message properties: code: default: 16 description: >- The error code indicating the type of error. It's fixed to 16, which is the code for UNAUTHENTICATED. format: int32 type: integer message: description: A human-readable message providing more details about the error. type: string details: description: Additional details about the error. items: type: string type: array required: - code - message title: UnauthorizedResponse type: object v1PermissionDeniedResponse: description: Response for permission denied example: code: 1 details: - details - details message: message properties: code: default: 7 description: >- The error code indicating the type of error. It's fixed to 7, which is the code for PERMISSION_DENIED. format: int32 type: integer message: description: A human-readable message providing more details about the error. type: string details: description: Additional details about the error. items: type: string type: array required: - code - message title: PermissionDeniedResponse type: object v1InternalServerErrorResponse: description: Response for internal server error example: code: 5 details: - details - details message: message properties: code: default: 13 description: >- The error code indicating the type of error. It's fixed to 13, which is the code for INTERNAL_ERROR. format: int32 type: integer message: description: A human-readable message providing more details about the error. type: string details: description: Additional details about the error. items: type: string type: array required: - code - message title: InternalServerErrorResponse type: object rpcStatus: example: code: 5 details: - '@type': '@type' - '@type': '@type' message: message properties: code: format: int32 type: integer message: type: string details: items: $ref: '#/components/schemas/protobufAny' type: array type: object v1Attestation: example: digest: digest id: id properties: id: title: The ID of the created attestation type: string digest: title: The attestation digest type: string type: object protobufAny: additionalProperties: type: object example: '@type': '@type' properties: '@type': type: string type: object securitySchemes: bearerToken: description: Bearer token for authentication type: http scheme: bearer bearerFormat: JWT ````