> ## Documentation Index > Fetch the complete documentation index at: https://docs.learningcommons.org/llms.txt > Use this file to discover all available pages before exploring further. # Durable skill by ID > Fetches a single DurableSkill by its Knowledge Graph identifier. Use this endpoint when you need to: - Retrieve the full details of a specific durable skill - Resolve an identifier returned by GET /durable-skills or the search endpoint Framework identifiers are not valid here — use GET /durable-skills-frameworks for frameworks. **Related topics:** - [XQ Competencies](/knowledge-graph/datasets/xq-competencies) - [Carnegie Skills Progressions](/knowledge-graph/datasets/carnegie-skills-progressions) ## OpenAPI ````yaml /api-reference/knowledge-graph-api/openapi.yaml get /durable-skills/{identifier} openapi: 3.0.3 info: title: Learning Commons Knowledge Graph REST API description: > REST API for accessing education knowledge graph data including academic standards, learning components, and curriculum information. **Key datasets:** - **Academic Standards**: Official state standards from all 50 US states sourced from 1EdTech's CASE Network - **Learning Components**: Granular, teachable skills that break down broad standards into actionable instructional units - **Standards crosswalks**: Connections between standards and frameworks - **Curriculum**: Structured course content including courses, lesson groupings (units, sections, modules), lessons, activities, and assessments **Learn more:** - [Knowledge Graph Overview](/knowledge-graph/understanding-knowledge-graph/introduction) - [Standards](/knowledge-graph/schema-reference/standards) - [Learning Components](/knowledge-graph/schema-reference/learning-components) - [Standards crosswalks](/knowledge-graph/schema-reference/standards) - [Curriculum](/knowledge-graph/schema-reference/curriculum) - [Quickstart](/knowledge-graph/getting-started/quickstart) version: '0' servers: - url: https://api.learningcommons.org/knowledge-graph/v0 description: Production server security: - ApiKeyAuth: [] tags: - name: Academic Standards description: Academic standards operations - name: Curriculum description: Curriculum operations - name: Durable Skills description: Durable skills frameworks and skills operations - name: Hierarchy description: Hierarchical navigation operations - name: Learning Components description: Learning components operations - name: Learning Progressions description: Learning progressions operations - name: Search description: Search and discovery operations - name: Standards crosswalks description: Standards crosswalks operations paths: /durable-skills/{identifier}: get: tags: - Durable Skills summary: Durable skill by ID description: > Fetches a single DurableSkill by its Knowledge Graph identifier. Use this endpoint when you need to: - Retrieve the full details of a specific durable skill - Resolve an identifier returned by GET /durable-skills or the search endpoint Framework identifiers are not valid here — use GET /durable-skills-frameworks for frameworks. **Related topics:** - [XQ Competencies](/knowledge-graph/datasets/xq-competencies) - [Carnegie Skills Progressions](/knowledge-graph/datasets/carnegie-skills-progressions) operationId: getDurableSkillByIdentifier parameters: - $ref: '#/components/parameters/DurableSkillIdentifierPath' responses: '200': description: Successfully retrieved the durable skill content: application/json: schema: $ref: '#/components/schemas/DurableSkill' '404': description: Durable skill not found content: application/json: schema: $ref: '#/components/schemas/Error' example: error: NotFoundError message: Durable skill not found requestId: req_12345 '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' example: error: InternalServerError message: >- An unexpected error occurred while retrieving the durable skill requestId: req_12345 components: parameters: DurableSkillIdentifierPath: name: identifier in: path required: true description: >- The unique identifier for the durable skill in the Knowledge Graph system schema: type: string schemas: DurableSkill: type: object description: > Represents an individual element within a durable skills framework — either a skill statement or an organizational grouping that structures them. Durable skills frameworks organize their content hierarchically, and each framework uses its own vocabulary for the levels (for example "Competency" and "Component Skill" in XQ Competencies, or "Subskill" and "Indicator" in Carnegie Skills Progressions). Use `normalizedStatementType` for a classification that is consistent across frameworks, and `statementType` to see the framework's own label. These items are published outside the CASE Network, so they carry no CASE identifiers and are addressed by their Knowledge Graph `identifier`. required: - identifier - author - provider - license - attributionStatement - hasChildren properties: identifier: type: string description: >- The unique identifier for this item in the Knowledge Graph system. This is a system-generated identifier that remains stable across data updates and can be used to reference this item in queries and relationships. statementCode: type: string nullable: true description: >- A short, human-readable code that identifies this item within its framework, reflecting its position in the hierarchy (e.g. "COL.1.1A.1", "FK.AC.1.a"). This is the code practitioners use to reference the skill in materials and planning tools. name: type: string nullable: true description: >- A short label for this item. For progression levels this names the level reached (e.g. "Exploring", "Analyzing", "Integrating", "Extending"), which distinguishes sibling levels under the same parent. May be null for organizational groupings that carry no separate label. description: type: string nullable: true description: >- The full text of the skill statement or organizational element, describing what a learner should know or be able to do. May be null for purely structural groupings. statementType: type: string nullable: true description: >- The classification label used by the source framework for this item (e.g. "Competency", "Component Skill", "Progression Level", "Subskill", "Indicator"). This preserves the framework's own terminology, which differs between frameworks. Use normalizedStatementType for cross-framework comparisons. normalizedStatementType: $ref: '#/components/schemas/NormalizedStatementTypeENUM' description: >- A normalized classification describing the broad functional role of this item, standardized across frameworks regardless of each framework's own labels. Use this to separate skill statements from the groupings that organize them. nullable: true gradeLevel: type: array nullable: true description: The educational grade level(s) for which this item is intended items: $ref: '#/components/schemas/GradeLevelENUM' jurisdiction: $ref: '#/components/schemas/JurisdictionENUM' description: >- The governing body responsible for publishing this item. Durable skills are not state-specific and are published as "Multi-State". inLanguage: $ref: '#/components/schemas/LanguageENUM' description: The language of the content, in BCP 47 format dateCreated: type: string format: date nullable: true description: The date on which this item was created in the source system dateModified: type: string format: date nullable: true description: >- The date on which this item was most recently modified in the source system notes: type: string nullable: true description: >- Optional field containing additional context, commentary or usage guidance about this item author: type: string description: >- The author or creator of this content, typically the organization that published the framework provider: type: string description: >- The service provider or organization that makes this data available in the knowledge graph license: type: string format: uri description: A URL to the license document that applies to this content attributionStatement: type: string description: >- A textual credit that acknowledges the source and creator of this work, as required by the CC BY 4.0 license. If you display or redistribute this content, you must include this attribution statement to comply with the license terms. hasChildren: type: boolean description: >- True if this item has at least one direct child via the "hasChild" relationship. Use this flag to decide whether to render an expand/collapse affordance and whether a follow-up call to /durable-skills/{identifier}/children will return results, avoiding requests that yield empty pages. Error: type: object description: Standard error response object returned for all error conditions required: - error - message - requestId properties: error: type: string description: >- Machine-readable error type identifier (e.g., `ValidationError`, `NotFoundError`, `InternalServerError`) message: type: string description: >- Human-readable error message that explains what went wrong and may include actionable guidance requestId: type: string description: Unique identifier for this request (for debugging and support) details: type: object description: >- Optional additional details about the error, such as validation failures or field-specific issues additionalProperties: true NormalizedStatementTypeENUM: type: string description: >- Classification label that has been standardized across standards frameworks for cross-state queries and categorization enum: - Standard - Standard Grouping - Other GradeLevelENUM: type: string description: Educational grade level that the resource is intended for enum: - PK - K - '1' - '2' - '3' - '4' - '5' - '6' - '7' - '8' - '9' - '10' - '11' - '12' JurisdictionENUM: type: string description: US state, territory, or multi-state designation enum: - Alabama - Alaska - Arizona - Arkansas - California - Colorado - Connecticut - Delaware - Florida - Georgia - Hawaii - Idaho - Illinois - Indiana - Iowa - Kansas - Kentucky - Louisiana - Maine - Maryland - Massachusetts - Michigan - Minnesota - Mississippi - Missouri - Montana - Nebraska - Nevada - New Hampshire - New Jersey - New Mexico - New York - North Carolina - North Dakota - Ohio - Oklahoma - Oregon - Pennsylvania - Rhode Island - South Carolina - South Dakota - Tennessee - Texas - Utah - Vermont - Virginia - Washington - Washington, D.C. - West Virginia - Wisconsin - Wyoming - Multi-State LanguageENUM: type: string description: Language used in the resource (BCP 47 format) enum: - en-US - es-US securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: API key for authentication ````