> ## Documentation Index > Fetch the complete documentation index at: https://docs.timeback.com/llms.txt > Use this file to discover all available pages before exploring further. # Assign a learning block to a student > Creates a new student learning block assignment. For non-dynamic blocks, competencies (CFItems) are copied from the learning block definition onto the assignment immediately. For dynamic blocks, the assignment is created with empty CFItems pending placement. ## OpenAPI ````yaml /openapi/learn-with-ai/platform-api.yaml post /competency-track/1.0/assignments openapi: 3.1.1 info: title: TimeBack Platform API description: >- RESTful API for the TimeBack Platform. Covers authentication, rostering, curriculum, insights, assessments, content grading, and more. version: 2026.09.10.1 servers: - url: https://platform.dev.timeback.com description: integration security: [] tags: - name: Auth description: Authentication and authorization endpoints - name: Organizations description: Organizations module contains all endpoints around organization management - name: Applications description: Applications module contains all endpoints for managing LTI applications - name: Users description: >- Users module contains all endpoints around user creation, update and consultation - name: Students description: Students module contains all endpoints around student management - name: Demographics description: >- Demographics module contains all endpoints around demographics consultation - name: Consent description: >- Initiate and query TimeBack parental consent for a student, backed by an immutable audit trail. - name: Classes description: Classes module contains all endpoints around class management - name: Courses description: Courses module contains all endpoints around course management - name: Enrollments description: Enrollments module contains all endpoints around enrollment consultation - name: CASE description: Competency and Academic Standards Exchange (CASE) 1.1 API - name: Curriculum description: Curriculum module contains endpoints for managing curriculum data - name: Competency Track description: Competency track endpoints - name: Content Grading description: >- Registration and management of graders for free-response content items — bring-your-own external graders (Tier 2) and, once shipped, platform-managed grading prompts (Tier 1). - name: Caliper description: The Caliper module contains all endpoints around Caliper Analytics - name: Insights description: Coaching insights and session analytics endpoints paths: /competency-track/1.0/assignments: post: tags: - Competency Track summary: Assign a learning block to a student description: >- Creates a new student learning block assignment. For non-dynamic blocks, competencies (CFItems) are copied from the learning block definition onto the assignment immediately. For dynamic blocks, the assignment is created with empty CFItems pending placement. operationId: postStudentAssignment requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreateAssignmentInput' responses: '201': $ref: '#/components/responses/CreateAssignmentSuccess' '400': $ref: '#/components/responses/BadRequest14' '401': $ref: '#/components/responses/Unauthorized5' '403': $ref: '#/components/responses/Forbidden5' '500': $ref: '#/components/responses/InternalError13' security: - CognitoUserPoolAuthorizer: - >- https://timeback-platform.trilogy.com/competency-track/scope/competency-track.write components: schemas: CreateAssignmentInput: type: object description: Input for assigning a learning block to a student properties: assignment: type: object properties: studentId: type: string format: uuid description: OneRoster user sourcedId of the student learningBlockId: type: string format: uuid description: sourcedId of the learning block definition to assign required: - studentId - learningBlockId required: - assignment AssignmentOutput: type: object description: Assignment response properties: assignment: type: object properties: sourcedId: type: string format: uuid description: Auto-generated identifier for the assignment studentId: type: string format: uuid description: OneRoster user sourcedId of the student learningBlockId: type: string format: uuid description: sourcedId of the learning block definition cfItemIds: type: array description: Resolved competency CFItem identifiers items: type: string format: uuid required: - sourcedId - studentId - learningBlockId - cfItemIds required: - assignment ApiError: type: object description: API error response properties: error: type: string description: Error type message: type: string description: Error message required: - error - message responses: CreateAssignmentSuccess: description: Assignment created successfully content: application/json: schema: $ref: '#/components/schemas/AssignmentOutput' BadRequest14: description: Bad request content: application/json: schema: $ref: '#/components/schemas/ApiError' examples: default: value: error: Bad request message: Invalid request parameters Unauthorized5: description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ApiError' examples: default: value: error: Unauthorized request message: Unauthorized request Forbidden5: description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ApiError' examples: default: value: error: Access forbidden message: Access forbidden InternalError13: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ApiError' examples: default: value: error: Internal server error message: Internal server error securitySchemes: CognitoUserPoolAuthorizer: type: oauth2 description: >- OAuth 2.0 client credentials flow. Contact timeback@trilogy.com to request credentials for your application. flows: clientCredentials: tokenUrl: https://platform.dev.timeback.com/auth/1.0/token scopes: https://purl.imsglobal.org/spec/or/v1p2/scope/roster.readonly: roster readonly https://purl.imsglobal.org/spec/or/v1p2/scope/roster-core.readonly: roster-core readonly https://purl.imsglobal.org/spec/or/v1p2/scope/roster.createput: roster createput https://purl.imsglobal.org/spec/lti/v1p3/scope/lti.readonly: lti readonly https://purl.imsglobal.org/spec/or/v1p2/scope/roster-demographics.readonly: roster-demographics readonly https://timeback-platform.trilogy.com/consent/scope/consent.write: consent write https://timeback-platform.trilogy.com/consent/scope/consent.read: consent read https://purl.imsglobal.org/spec/or/v1p2/scope/roster-core.createput: roster-core createput https://purl.imsglobal.org/spec/or/v1p2/scope/roster.delete: roster delete https://purl.imsglobal.org/spec/or/v1p2/scope/roster-core.delete: roster-core delete https://purl.imsglobal.org/spec/case/v1p0/scope/case.readonly: case readonly https://purl.imsglobal.org/spec/case/v1p0/scope/case.createput: case createput https://purl.imsglobal.org/spec/case/v1p0/scope/case.delete: case delete https://timeback-platform.trilogy.com/competency-track/scope/competency-track.readonly: competency-track readonly https://timeback-platform.trilogy.com/competency-track/scope/competency-track.write: competency-track write https://timeback-platform.trilogy.com/competency-track/scope/competency-track.delete: competency-track delete https://timeback-platform.trilogy.com/content/scope/content.write: content write https://timeback-platform.trilogy.com/content/scope/content.read: content read https://purl.imsglobal.org/spec/caliper/v1p2/scope/events.write: events write https://purl.imsglobal.org/spec/caliper/v1p2/scope/events.readonly: events readonly https://timeback-platform.trilogy.com/webhooks/scope/webhooks.write: webhooks write https://timeback-platform.trilogy.com/webhooks/scope/webhooks.read: webhooks read https://timeback-platform.trilogy.com/webhooks/scope/webhooks.delete: webhooks delete ````