Retrieve a feature flag

Errors

Status	`type`	`code`	When
404	`not_found`	`feature_flag_not_found`	—

It can also fail with the errors every operation shares, such as unauthenticated; see Errors.

More in Feature flags

List feature flags GET
Create a feature flag POST
Evaluate flags for an end user POST
Update a feature flag PATCH
Archive a feature flag POST
Unarchive a feature flag POST
List a flag's variants GET
Replace a flag's variants PUT
Set who gets a flag in an environment PUT
Make test follow production DELETE
List a flag's overrides GET
Set an override PUT
Remove an override DELETE
List an end user's overrides GET

Examples

curl -X GET "https://api.voidhash.com/api/v1/projects/proj_tz4a98xxat96iws9zmbrgj3a/feature-flags/ff_v8b3n5q0w2e7h7d2k9m4x1c6" \  -H "Authorization: Bearer vh_sk_..."

{  "id": "ff_v8b3n5q0w2e7h7d2k9m4x1c6",  "projectId": "proj_tz4a98xxat96iws9zmbrgj3a",  "key": "new-checkout",  "description": "The redesigned checkout screen.",  "type": "boolean",  "environments": {    "production": {      "isEnabled": true,      "overrides": [        {          "identityType": "email",          "identityValue": "ada@example.com",          "isEnabled": true,          "variantKey": null,          "note": "QA device for the new checkout"        }      ],      "rules": [        {          "id": "beta-testers",          "name": "Beta testers",          "identities": [            {              "identityType": "distinct_id",              "identityValue": "user_8231"            }          ],          "serve": {            "rolloutPercentage": 100,            "variantKey": null          }        }      ],      "fallthrough": {        "rolloutPercentage": 50,        "variantKey": null      }    },    "test": null  },  "isArchived": false,  "experimentId": null,  "createdAt": "2026-02-24T10:12:45.000Z",  "updatedAt": "2026-03-09T08:30:00.000Z"}

{  "error": {    "type": "invalid_request",    "code": "string",    "message": "string",    "param": "string"  }}

{  "error": {    "type": "unauthenticated",    "code": "invalid_api_key",    "message": "This secret key is not valid."  }}

{  "error": {    "type": "permission_denied",    "code": "permission_denied",    "message": "Insufficient permissions."  }}

{  "error": {    "type": "not_found",    "code": "feature_flag_not_found",    "message": "This project has no feature flag ff_v8b3n5q0w2e7h7d2k9m4x1c6.",    "param": "featureFlagId"  }}

{  "error": {    "type": "internal",    "code": "internal_error",    "message": "Something went wrong on our side. Try again, and contact support with the Request-Id header if it keeps failing."  }}

Errors

More in Feature flags

Retrieve a feature flag

Errors

More in Feature flags

Authorization

Path parameters

Examples

Response body

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

Retrieve a feature flag

Retrieve a feature flag

feature_flag_not_found

project_not_found

200application/json

400application/json

401application/json

403application/json

404application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`