> ## Documentation Index > Fetch the complete documentation index at: https://docs.generalvalidation.com/llms.txt > Use this file to discover all available pages before exploring further. # List validation functions > The functions a Test can use, and what each needs. Requires the GV.APIReader application role, or a higher role (Owner > Contributor > Reader). ## OpenAPI ````yaml /api/openapi.json get /api/v1/fabric/catalog openapi: 3.1.0 info: description: >- General Validation's API for Organization administration, Table Pair and Test authoring, Runs, and Result metadata. Microsoft Entra bearer tokens authorize every call. title: General Validation API version: 1.0.0 servers: - url: https://api.generalvalidation.com security: [] tags: - description: >- Customer-owned Fabric references, immutable Runs, and safe Result summaries. name: Fabric - description: Organizations and verified membership. name: Organization - description: Subscriptions and entitlements. name: Billing paths: /api/v1/fabric/catalog: get: tags: - Fabric summary: List validation functions description: >- The functions a Test can use, and what each needs. Requires the GV.APIReader application role, or a higher role (Owner > Contributor > Reader). operationId: get_fabric_catalog responses: '200': content: application/json: schema: $ref: '#/components/schemas/CatalogPage' description: Successful Response '401': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: A valid Microsoft Entra bearer token is required. '403': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: The authenticated principal does not have the required role. '404': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: The resource does not exist in this tenant. '409': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: The operation conflicts with current resource or Azure state. '422': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: The request is syntactically valid but semantically invalid. '429': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: The bounded application request rate was exceeded. headers: Retry-After: description: Seconds to wait before retrying. schema: minimum: 1 type: integer '503': content: application/problem+json: schema: $ref: '#/components/schemas/V1Problem' description: A required dependency is temporarily unavailable. headers: Retry-After: description: Seconds to wait before retrying. schema: minimum: 1 type: integer security: - entraApplication: [] components: schemas: CatalogPage: additionalProperties: false properties: items: items: $ref: '#/components/schemas/CatalogItem' title: Items type: array required: - items title: CatalogPage type: object V1Problem: additionalProperties: false properties: code: description: >- Stable machine-readable error code, such as `precondition.failed`. Branch on this value. title: Code type: string detail: description: What went wrong in this request, written for a person. title: Detail type: string diagnostics: anyOf: - additionalProperties: true type: object - type: 'null' default: null description: >- Extra details for some errors, such as `fieldErrors` for an invalid request or `requiredRole` for a denied one. Absent when there are none. title: Diagnostics instance: description: Path of the request that failed. title: Instance type: string requestId: description: >- This request's ID, also sent in the `X-Request-Id` response header. Quote it when you contact support. A request that sends an `X-Request-Id` of 1 to 64 letters, digits, or `_.:-` gets that value back. title: Requestid type: string status: description: The HTTP status code of this response. title: Status type: integer title: description: Short summary of the error code. title: Title type: string type: description: Link to the documentation page for this error code. title: Type type: string required: - type - title - status - code - detail - instance - requestId title: V1Problem type: object CatalogItem: additionalProperties: false properties: code: description: The value for a Test's `function`. enum: - COUNT_ROWS - COUNT - COUNT_DISTINCT - MIN - MAX - AVG - SUM - VALUE - OUTER_VALUE - SET_A_IN_B - SET_B_IN_A - SET_A_EQUALS_B title: Code type: string family: description: >- `aggregate` compares one value from each side, `value` compares rows matched by join keys, and `set` compares distinct values. enum: - aggregate - value - set title: Family type: string name: description: The function's name in the app. title: Name type: string requires_columns: description: Whether a Test needs `source_column` and `target_column`. title: Requires Columns type: boolean requires_keys: description: Whether the Table Pair needs join keys first. title: Requires Keys type: boolean required: - code - name - family - requires_columns - requires_keys title: CatalogItem type: object securitySchemes: entraApplication: bearerFormat: JWT description: >- Microsoft Entra application token issued by the caller's Organization tenant for this multitenant API. Request the .default scope and assign the application the required GV.APIReader, GV.APIContributor, or GV.APIOwner role. scheme: bearer type: http x-gv-app-roles: - GV.APIReader - GV.APIContributor - GV.APIOwner x-gv-audience: 78d5d8af-9dd6-49dd-b06c-38c3a3c707af x-gv-scope: api://78d5d8af-9dd6-49dd-b06c-38c3a3c707af/.default x-gv-token-url-template: https://login.microsoftonline.com/{tenantId}/oauth2/v2.0/token ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.