> ## Documentation Index > Fetch the complete documentation index at: https://docs.outerproduct.com/llms.txt > Use this file to discover all available pages before exploring further. # List Schemas ## OpenAPI ````yaml https://api.outerproduct.com/openapi.json get /v1/workspaces/{workspace_id}/catalogs/{catalog_id}/schemas openapi: 3.1.0 info: title: OuterProduct API description: >- Public-facing REST API for OuterProduct model distillation, prediction, and explanation. version: 0.1.8 servers: [] security: [] paths: /v1/workspaces/{workspace_id}/catalogs/{catalog_id}/schemas: get: tags: - schema summary: List Schemas operationId: >- list_schemas_v1_workspaces__workspace_id__catalogs__catalog_id__schemas_get parameters: - name: workspace_id in: path required: true schema: type: string title: Workspace Id - name: catalog_id in: path required: true schema: type: string title: Catalog Id - name: pageSize in: query required: false schema: type: integer minimum: 0 default: 0 title: Pagesize - name: pageToken in: query required: false schema: type: string default: '' title: Pagetoken responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/ListSchemasResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' security: - BearerAuth: [] components: schemas: ListSchemasResponse: properties: schemas: items: $ref: '#/components/schemas/Schema-Output' type: array title: Schemas description: Schemas in this page. nextPageToken: type: string title: Nextpagetoken description: >- Token for retrieving the next page, or empty when this is the last page. default: '' type: object title: ListSchemasResponse description: Response containing one page of schemas. HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError Schema-Output: properties: name: type: string pattern: >- ^workspaces/[a-z0-9](?:[a-z0-9._~-]*[a-z0-9])?/catalogs/[a-z][a-z0-9_]{0,62}/schemas/[a-z][a-z0-9_]{0,62}$ title: Name description: |- Resource name in the form `workspaces/{workspace}/catalogs/{catalog}/schemas/{schema}`. The terminal resource ID is the SQL-visible schema name. spec: $ref: '#/components/schemas/SchemaSpec' description: Definition used to construct this schema. createTime: anyOf: - type: string - type: 'null' title: Createtime description: Time at which the schema was created. updateTime: anyOf: - type: string - type: 'null' title: Updatetime description: Time at which the schema was most recently updated. revision: type: string title: Revision description: Monotonically increasing revision of this schema definition. default: '0' revisionHash: type: string title: Revisionhash description: Lowercase SHA-256 hash of the canonical stored schema definition. default: '' type: object required: - spec - name title: Schema description: A SQL-visible schema owned by its parent catalog. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError SchemaSpec: properties: relational: anyOf: - $ref: '#/components/schemas/RelationalSchemaSpec' - type: 'null' description: One relational source supplies the complete table subtree. type: object title: SchemaSpec description: >- Optional source for a schema's complete child subtree. With no source, tables are ordinary child Table resources resolved through WorkspaceService. When a source is selected, it supplies the complete observed subtree and local Table children are forbidden. RelationalSchemaSpec: properties: connector: type: string pattern: >- ^workspaces/[a-z0-9](?:[a-z0-9._~-]*[a-z0-9])?/connectors/[a-z0-9](?:[a-z0-9._~-]*[a-z0-9])?$ title: Connector description: Connector used to discover and query the source schema. sourceCatalog: type: string minLength: 1 title: Sourcecatalog description: Source catalog containing the schema. sourceSchema: type: string minLength: 1 title: Sourceschema description: Source schema selected through the connector. snapshot: anyOf: - $ref: '#/components/schemas/RelationalSchemaSnapshot' - type: 'null' description: Optional complete source snapshot used instead of live discovery. type: object required: - connector - sourceCatalog - sourceSchema title: RelationalSchemaSpec description: One source schema selected through a relational connector. RelationalSchemaSnapshot: properties: tables: additionalProperties: $ref: '#/components/schemas/RelationalTableSnapshot' propertyNames: minLength: 1 type: object title: Tables description: All observed source tables, keyed by their names within the schema. type: object title: RelationalSchemaSnapshot description: >- The complete table subtree observed beneath one relational source schema. Child snapshots inherit the connector, source catalog, and source schema from the owning RelationalSchemaSpec. RelationalTableSnapshot: properties: schema: $ref: '#/components/schemas/ArrowIpcSchema' description: Arrow schema observed for the source table. type: object required: - schema title: RelationalTableSnapshot description: Constructor snapshot for one relational table. ArrowIpcSchema: properties: ipcMessage: type: string minLength: 1 contentEncoding: base64 contentMediaType: application/octet-stream title: Ipcmessage type: object required: - ipcMessage title: ArrowIpcSchema description: >- An Arrow schema encoded as one canonical Arrow IPC schema message. The bytes contain only schema metadata, not an IPC stream, file, dictionary, record batch, or continuation marker. Consumers must reject any other IPC payload kind. securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: API key or OAuth2/OIDC access token description: >- An API key or OAuth2/OIDC access token sent as `Authorization: Bearer `. ````