Update an existing app-level environment variable. You can change the key, value, or runtime/buildtime flags. A deployment is required for changes to take effect.
API key authentication. Pass your API key as a Bearer token in the Authorization header.
Application identifier
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"fb5e5168-4281-4bec-94c5-0d1584e9e657"
Environment variable identifier
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"fb5e5168-4281-4bec-94c5-0d1584e9e657"
New name for the environment variable
1 - 255"API_BASE_URL"
New value for the environment variable. Will be stored encrypted at rest.
32768"https://api.example.com"
Whether this variable is available at runtime
true
Whether this variable is available during the build step
true
Default Response
Unique identifier for the environment variable
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"fb5e5168-4281-4bec-94c5-0d1584e9e657"
Identifier of the application this environment variable belongs to
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"fb5e5168-4281-4bec-94c5-0d1584e9e657"
Name of the environment variable. Must be unique within the application scope.
1 - 255"DATABASE_URL"
Value of the environment variable. Stored encrypted at rest.
32768"postgres://user:pass@host:5432/db"
Whether this variable is available at runtime. Defaults to true when created.
true
Whether this variable is available during the build step. Defaults to true when created.
true
Timestamp when the environment variable was created, in ISO 8601 format
^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$"2025-01-30T00:00:00.000Z"
Timestamp when the environment variable was last modified, in ISO 8601 format
^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$"2025-01-30T00:00:00.000Z"