# Get expected output for a regression test result

**GET /runs/{run_id}/samples/{sample_id}/expected**

Expected output is a file reference stored under TestResults using the regression output extension. Resolved from GCS or local SAMPLE_REPOSITORY at request time. storage_status reflects which backends have the file. Do not assume local and GCS are always in sync.



## Servers
- Production: https://sampleplatform.ccextractor.org/api/v1 (Production)


## Authentication methods
- Bearer auth


## Parameters

### Path parameters
- **run_id** (integer)
  Numeric run ID
- **sample_id** (integer)
  Numeric sample or regression result ID

### Query parameters
- **regression_id** (integer)
  Regression test definition ID
- **output_id** (integer)
  Output file ID within a regression test definition
- **format** (string)
  Content encoding for file responses. Use text only when the file is known to be UTF-8 compatible. Binary or unknown content defaults to base64.


## Responses
### 200
Expected output file

#### Body: application/json (object)
- **run_id** (integer | null)
  Null for expected output not tied to a specific run.
- **sample_id** (integer)

- **regression_id** (integer)

- **output_id** (integer)

- **filename** (string)

- **content_type** (string)

- **encoding** (string)
  utf-8 only when file is confirmed text. Default is base64.
- **content** (string)

- **sha256** (string)

- **storage_status** (string)
  ok = verified in both local and GCS storage. degraded = exists in one backend only. missing = not found in either backend.

### 401
Missing, expired, or invalid bearer token

#### Body: application/json (object)
- **code** (string)
  Machine-readable error code (snake_case)
- **message** (string)
  Human-readable error summary
- **details** (object)
  Structured context for the error. Always an object, never null. Empty object {} when no additional detail is available.

### 403
Token is valid but lacks the required scope or role

#### Body: application/json (object)
- **code** (string)
  Machine-readable error code (snake_case)
- **message** (string)
  Human-readable error summary
- **details** (object)
  Structured context for the error. Always an object, never null. Empty object {} when no additional detail is available.

### 404
Resource not found

#### Body: application/json (object)
- **code** (string)
  Machine-readable error code (snake_case)
- **message** (string)
  Human-readable error summary
- **details** (object)
  Structured context for the error. Always an object, never null. Empty object {} when no additional detail is available.

### 429
Too many requests. Retry after the indicated number of seconds.
#### Headers
- **Retry-After** (integer)
  Seconds to wait before retrying
- **X-RateLimit-Limit** ()
  Maximum requests allowed in the current window
- **X-RateLimit-Remaining** ()
  Requests remaining in the current window
- **X-RateLimit-Reset** ()
  Unix timestamp when the rate limit window resets

#### Body: application/json (object)
- **code** (string)
  Machine-readable error code (snake_case)
- **message** (string)
  Human-readable error summary
- **details** (object)
  Structured context for the error. Always an object, never null. Empty object {} when no additional detail is available.

### default
Unexpected server error

#### Body: application/json (object)
- **code** (string)
  Machine-readable error code (snake_case)
- **message** (string)
  Human-readable error summary
- **details** (object)
  Structured context for the error. Always an object, never null. Empty object {} when no additional detail is available.


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