> ## Documentation Index > Fetch the complete documentation index at: https://docs.edgeimpulse.com/llms.txt > Use this file to discover all available pages before exploring further. # Get metadata > Retrieve the metadata from a generated DSP block. ## OpenAPI ````yaml /.assets/openapi.yaml get /api/{projectId}/dsp/{dspId}/metadata openapi: 3.0.0 info: title: Edge Impulse API version: 1.0.0 servers: - url: https://studio.edgeimpulse.com/v1 security: - ApiKeyAuthentication: [] - JWTAuthentication: [] - JWTHttpHeaderAuthentication: [] - OAuth2: [] paths: /api/{projectId}/dsp/{dspId}/metadata: get: tags: - DSP summary: Get metadata description: Retrieve the metadata from a generated DSP block. operationId: getDspMetadata parameters: - $ref: '#/components/parameters/ProjectIdParameter' - $ref: '#/components/parameters/DspIdParameter' - $ref: '#/components/parameters/ExcludeIncludedSamplesParameter' - $ref: '#/components/parameters/OptionalDSPCategoryParameter' responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/DSPMetadataResponse' components: parameters: ProjectIdParameter: name: projectId in: path required: true description: Project ID schema: type: integer DspIdParameter: name: dspId in: path required: true description: DSP Block ID, use the impulse functions to retrieve the ID schema: type: integer ExcludeIncludedSamplesParameter: name: excludeIncludedSamples in: query required: false description: >- Whether to exclude 'includedSamples' in the response (as these can slow down requests significantly). schema: type: boolean OptionalDSPCategoryParameter: name: category in: query required: false description: Which of the acquisition categories to get metadata from schema: type: string enum: - training - testing - all schemas: DSPMetadataResponse: allOf: - $ref: '#/components/schemas/GenericApiResponse' - $ref: '#/components/schemas/DSPMetadata' GenericApiResponse: type: object required: - success properties: success: type: boolean description: Whether the operation succeeded error: type: string description: Optional error description (set if 'success' was false) DSPMetadata: type: object required: - created - generated - dspConfig - labels - featureCount - windowCount - includedSamples - windowSizeMs - windowIncreaseMs - padZeros - frequency - outputConfig properties: created: type: string format: date-time description: Date when the features were created generated: type: boolean description: Whether features were generated dspConfig: type: object additionalProperties: type: string labels: type: array description: Labels in the dataset when generator ran items: type: string featureLabels: type: array description: >- Names of the generated features. Only set if axes have explicit labels. items: type: string windowCount: type: integer featureCount: type: integer description: Number of features for this DSP block includedSamples: type: array description: >- The included samples in this DSP block. Note that these are sorted in the same way as the `npy` files are laid out. So with the `windowCount` parameter you can exactly search back to see which file contributed to which windows there. items: type: object required: - id - windowCount properties: id: type: integer windowCount: type: integer windowSizeMs: type: integer description: Length of the sliding window when generating features. windowIncreaseMs: type: integer description: Increase of the sliding window when generating features. padZeros: type: boolean description: Whether data was zero-padded when generating features. frequency: type: number description: Frequency of the original data in Hz. outputConfig: type: object description: Information about the output of the DSP block required: - type - shape properties: type: type: string description: Output type of the DSP block enum: - image - spectrogram - flat shape: type: object description: The shape of the block output required: - width properties: width: description: >- Available on all types. Denotes the width of an 'image' or 'spectrogram', or the number of features in a 'flat' block. type: integer height: description: Only available for type 'image' and 'spectrogram' type: integer channels: description: Only available for type 'image' type: integer frames: description: Number of frames, only available for type 'image' type: integer fftUsed: type: array items: type: integer resamplingAlgorithmVersion: type: number description: >- The version number of the resampling algorithm used (for resampled time series data only) featureExplorerJobId: type: integer description: >- When specified, a job is running (asynchronously) to generate the feature explorer. featureExplorerJobFailed: description: >- If this is set, then the feature explorer job failed (get the status by getting the job logs for 'featureExplorerJobId'). type: boolean featureImportanceJobId: type: integer description: >- When specified, a job is running (asynchronously) to generate feature importance. featureImportanceJobFailed: description: >- If this is set, then the feature importance job failed (get the status by getting the job logs for 'featureImportanceJobId'). type: boolean securitySchemes: ApiKeyAuthentication: type: apiKey in: header name: x-api-key JWTAuthentication: type: apiKey in: cookie name: jwt JWTHttpHeaderAuthentication: type: apiKey in: header name: x-jwt-token OAuth2: type: oauth2 flows: authorizationCode: authorizationUrl: /v1/oauth/authorize tokenUrl: /v1/oauth/token scopes: openid: Access to basic profile information email: Access to email address profile: Access to full profile information implicit: authorizationUrl: /v1/oauth/authorize scopes: openid: Access to basic profile information email: Access to email address profile: Access to full profile information password: tokenUrl: /v1/oauth/token scopes: openid: Access to basic profile information email: Access to email address profile: Access to full profile information clientCredentials: tokenUrl: /v1/oauth/token scopes: openid: Access to basic profile information email: Access to email address profile: Access to full profile information ````