Successfully retrieved the list of experiments associated with the holdout.

Response structure:

• Returns an array of experiment objects
• Each experiment contains identification, timing, and variation data
• Empty or null values are automatically filtered out
• Results are ordered by the database query (typically by experiment_id)

Data interpretation:

• experiment_id: References the layer_experiment_id from rules connected to this holdout
• Timing fields: Reflect actual experiment run periods from reports
• deployed_variation_id: Present only when experiments have specific variation deployments
• Missing end_time: Indicates ongoing or perpetually running experiments
• Missing deployed_variation_id: Experiments without specific variation targeting

Empty response scenarios:

• Holdout exists but has no connected experiments (valid scenario)
• No rules in the project match the holdout's configuration
• All connected experiments have been archived or removed

Use this data for:

• Understanding experiment overlap with holdout traffic
• Planning holdout changes with awareness of affected experiments
• Building experiment impact reports and analytics
• Coordinating experiment timelines and traffic allocation

Bad Request - Invalid request parameters or malformed IDs.

Common causes:

• Invalid holdout_id format (must be a positive integer)
• Invalid project_id format (must be a positive integer)
• Malformed request structure or unsupported query parameters

Invalid credentials

Forbidden - You don't have permission to view holdout experiments in this project.

Permission requirements:

• Must have project-level read access
• Must have permissions to view holdouts and their associated data
• Must have experiment data access permissions
• Holdouts feature must be enabled for this project

Common causes:

• Insufficient user permissions for holdout data access
• Project-level permissions don't include experiment data viewing
• Organization-level policies restrict holdout information access
• Holdouts feature flag is disabled for this project

Not Found - The specified holdout does not exist or you don't have access to it.

Possible reasons:

• Holdout ID does not exist in the specified project
• Project ID does not exist or you don't have access to it
• Holdout was permanently deleted
• Insufficient permissions to view this holdout or its experiments

Note: Returns 404 even if holdout exists but you lack permissions, for security reasons.