> ## Documentation Index > Fetch the complete documentation index at: https://docs.effectiveai.app/llms.txt > Use this file to discover all available pages before exploring further. # Get the input and output schemas of a program version > Get the rating engine’s input and output JSON schemas for a specific program version. These schemas describe engine inputs and results. A Relativities book uses a separate schema, and this request does not run the program’s preparation code. Build the rating request's `inputs` object to match `inputSchema`, including its root record names. Interpret returned premiums with `outputSchema` and the program's documented term and coverage basis. Requires your organization’s permission to run or download the program, plus your `raters:view` permission. Effective example programs require only `raters:view`. ## OpenAPI ````yaml /openapi.json get /insurance/rating-programs/{id}/versions/{version}/contract openapi: 3.0.3 info: title: Effective API version: 2.0.0 description: The public Effective REST API. Authenticate using an Effective API key. servers: - url: https://api.effectiveai.app/api/v2 description: Production security: - bearerAuth: [] paths: /insurance/rating-programs/{id}/versions/{version}/contract: get: tags: - Rating programs summary: Get the input and output schemas of a program version description: >- Get the rating engine’s input and output JSON schemas for a specific program version. These schemas describe engine inputs and results. A Relativities book uses a separate schema, and this request does not run the program’s preparation code. Build the rating request's `inputs` object to match `inputSchema`, including its root record names. Interpret returned premiums with `outputSchema` and the program's documented term and coverage basis. Requires your organization’s permission to run or download the program, plus your `raters:view` permission. Effective example programs require only `raters:view`. operationId: getRatingProgramVersionContract parameters: - schema: type: string pattern: ^[a-z0-9][a-z0-9._-]{0,127}$ required: true name: id in: path - schema: type: integer minimum: 0 exclusiveMinimum: true required: true name: version in: path responses: '200': description: >- Exact engine input/output schemas; native inputs are distinct from the Program book schema. content: application/json: schema: type: object properties: programId: type: string version: type: number engineBundleId: type: string inputSchema: type: object nullable: true additionalProperties: nullable: true outputSchema: type: object nullable: true additionalProperties: nullable: true required: - programId - version - engineBundleId - inputSchema - outputSchema additionalProperties: false '400': description: Invalid request or cursor. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '401': description: Authentication required. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '403': description: Program entitlement and user permission are required. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '404': description: Program, version or package not found. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '409': description: Stored bundle identity differs. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '413': description: Input exceeds the size limit. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '415': description: The request body is not application/json. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '422': description: >- invalid_inputs, business_rejection or evaluation_failed. violations lists each failed input constraint. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '429': description: Rating capacity unavailable; honor Retry-After. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '500': description: Unexpected failure. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '503': description: Dependency unavailable. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' security: - bearerAuth: [] components: schemas: V2CodedError: allOf: - $ref: '#/components/schemas/V2Error' - type: object properties: code: type: string minLength: 1 description: Stable error code. Clients must tolerate unknown future codes. details: type: array items: type: object properties: location: type: string enum: - path - query - header - body path: type: array items: type: string maxLength: 64 maxItems: 12 code: type: string enum: - required - invalid_type - invalid_value - unknown_field message: type: string minLength: 1 maxLength: 200 required: - location - path - code - message minItems: 1 maxItems: 20 description: Bounded safe validation issues; may omit some invalid fields. requestId: type: string minLength: 1 maxLength: 128 description: >- Existing server correlation for this HTTP attempt, when available. dataset: type: string enum: - naic - osha description: Dataset needed for dataset_not_enabled. businessCode: type: string description: The rater’s own refusal code, for business_rejection. violations: type: array items: type: object properties: code: type: string description: Authored or built-in constraint code message: type: string description: Authored message for the failed constraint path: type: string description: Input path of the offending value; empty for the request value: nullable: true description: Offending input value, size-bounded by the runtime constraint: type: string description: The constraint the value failed, as text cite: type: string nullable: true description: >- Filing citation of the constraint, when the source cites one required: - code - message - path - value - constraint - cite additionalProperties: false maxItems: 256 description: >- Each input constraint the submission failed, for invalid_inputs and business_rejection. violationsTruncated: type: boolean description: >- True when the rater reported more violations than violations holds. accessUrl: type: string nullable: true format: uri description: >- Where to add the product to your account, for product_access_required. required: - code V2Error: type: object properties: error: type: string minLength: 1 description: Human-readable explanation of the failure. required: - error securitySchemes: bearerAuth: type: http scheme: bearer description: 'Effective API key. Send Authorization: Bearer sk-eai-...' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.