> ## Documentation Index > Fetch the complete documentation index at: https://docs.moonbounce.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get a past evaluation > Reads only. Returns an evaluation of this organization and the key's environment, including assignment_mode and content: {state, attribute_values?} when inputs were stored, or content: null when they were not (store_state: false). A submitted JSON null is content: {state: null}; another environment's evaluation is 404, so a test key never reads production traffic. The web app (WebApi) may not read evaluations (403): a blind spot-check card carries the id. ## OpenAPI ````yaml /openapi.json get /v1/evaluations/{evaluation_id} openapi: 3.1.0 info: title: Moonbounce Decisions API version: 0.0.0 description: >- Moonbounce decisions: evaluate an item's state against a decision structure (System One questions, attributes you supply and aggregations over both), record feedback and seed examples, review a ranked queue, and improve the structure through suggestions that ship as code diffs, each with a preview (backtest) and an evidence label. **Authentication.** Send an API key as `Authorization: Bearer ` on every operation except `GET /health` and `POST /v1/structures/hash`. Call the API from a server, never a browser: a key must not reach one, and the API sends no CORS headers. A key belongs to one organization and one environment: production, or test for a key with the `env:test` permission. Test traffic never counts as production traffic. **Requests.** JSON bodies (`Content-Type: application/json`) of at most 1 MB, parsed strictly: duplicate keys, lone surrogates, integers outside ±(2^53 - 1), `__proto__` keys, U+0000 and nesting deeper than 64 are a 400. **Retries.** Send an `Idempotency-Key` on every POST under /v1 that takes one (all but `POST /v1/structures/hash`). Keep it for the request's retries. The same key with the same request returns the first stored result, marked `Idempotent-Replayed: true`, for 24 hours (410 if that result was since deleted); with another request it is 422 IDEMPOTENCY_KEY_REUSED. Keys are scoped to the organization and environment across every operation, so use a fresh key per request. A request that failed before its result was stored runs again when retried. 429 and 503 under /v1 may carry `Retry-After` (seconds); a daily QUOTA_EXCEEDED cap instead names its reset time. **Errors.** Every error under /v1 is `{"error": {"type", "message", "reason"?, "param"?, "details"?}}` (ErrorBody); `GET /health` answers its own shape. Every response carries a `Request-Id` header. Rate limits apply per key, and per client IP for requests without a valid key; a 429 RATE_LIMITED carries `Retry-After`. servers: - url: https://api.moonbounce.ai description: Production security: [] paths: /v1/evaluations/{evaluation_id}: get: tags: - evaluate summary: Get a past evaluation description: >- Reads only. Returns an evaluation of this organization and the key's environment, including assignment_mode and content: {state, attribute_values?} when inputs were stored, or content: null when they were not (store_state: false). A submitted JSON null is content: {state: null}; another environment's evaluation is 404, so a test key never reads production traffic. The web app (WebApi) may not read evaluations (403): a blind spot-check card carries the id. operationId: getEvaluation parameters: - schema: $ref: '#/components/schemas/EvlId' required: true name: evaluation_id in: path responses: '200': description: The evaluation content: application/json: schema: $ref: '#/components/schemas/EvaluationResponse' '400': description: 'Invalid request: `param` names the field at fault when one applies' content: application/json: schema: $ref: '#/components/schemas/ErrorBody' '401': description: Missing or invalid API key (reason KEY_INVALID) content: application/json: schema: $ref: '#/components/schemas/ErrorBody' '403': description: The key may not do this content: application/json: schema: $ref: '#/components/schemas/ErrorBody' '404': description: Not found, or not in this key's organization and environment content: application/json: schema: $ref: '#/components/schemas/ErrorBody' '429': description: >- RATE_LIMITED: retry after Retry-After seconds; QUOTA_EXCEEDED: details.reset_at gives the daily reset time (no Retry-After) headers: Retry-After: schema: type: string description: Seconds to wait before retrying, when waiting helps. required: false description: Seconds to wait before retrying, when waiting helps. content: application/json: schema: $ref: '#/components/schemas/ErrorBody' '503': description: >- Temporarily unavailable, with Retry-After (for example reason AUTH_UNAVAILABLE, ENGINE_UNAVAILABLE or STORE_UNAVAILABLE): retry with the same Idempotency-Key headers: Retry-After: schema: type: string description: Seconds to wait before retrying, when waiting helps. required: true description: Seconds to wait before retrying, when waiting helps. content: application/json: schema: $ref: '#/components/schemas/ErrorBody' security: - bearerAuth: - decisions:evaluate components: schemas: EvlId: type: string pattern: >- ^evl_[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$ EvaluationResponse: oneOf: - type: object properties: environment: $ref: '#/components/schemas/Environment' id: $ref: '#/components/schemas/EvlIdOutput' answers: type: object additionalProperties: $ref: '#/components/schemas/NoulAnswer' description: Each question's answer, as System One returns it. aggregations: type: object additionalProperties: $ref: '#/components/schemas/AggregationResult' via: type: string description: >- A zero-based rule index, `cases.