POST/projects/{slug}/environments/{environmentSlug}/versions

Snapshots every live variable in the environment into a new immutable version. The snapshot copies name, value, type, isSecret, visibility, required and defaultValue as stored, which means the ciphertext is copied verbatim. The server cannot decrypt or re-encrypt it, so whatever key the values were encrypted with is the key needed to read this version later.

This is the durability step. Take a version before any risky bulk change, and take one before a rollback, because rollback does not snapshot the current state for you.

The body is optional. A missing or unparseable body is treated as no note rather than an error. label is assigned server-side.

An environment holds at most 1000 versions. Past that, creation fails.

Publishing works on every plan, including Free. The plan only decides how much of the resulting history is visible: Free workspaces can read the latest version they just published, older versions, their entries and rollback return 402 plan.upgrade_required until the workspace upgrades.

Requires the versions:write scope.

curl --request POST \
  --url 'https://api.envless.cloud/projects/<slug>/environments/<environmentSlug>/versions' \
  --header 'Authorization: Bearer ev_sk_xxxxxxxxxxxx' \
  --header 'Content-Type: application/json' \
  --data '{
  "note": "<string>"
}'

Try itPOSThttps://api.envless.cloud/projects/{slug}/environments/{environmentSlug}/versions

Authorization

Authorizationstringrequiredheader
Bearer token: an Envless API key (ev_sk_…), created in the dashboard or with POST /keys. The key is bound to one workspace; every request runs inside it.

Path parameters

slugstringrequired
Project slug or project uniqueId.
environmentSlugstringrequired
Environment slug.

Query parameters

productstring
Product slug, to disambiguate a project slug shared across products.

Request body

application/json · optional

notestring | nullmax length 200
Optional note. Trimmed, and an empty result is stored as null.

Responses

201Created

Create a version succeeded.

successbooleanrequired
codeintegerrequired
The HTTP status of this response, repeated in the body.
messagestringrequired
errornullrequired
dataobjectrequired
Show child attributesHide child attributes
- idstringrequired
- labelstringrequired
  Server-assigned, v1, v2 and so on.
- notestring | null
- variableCountintegerrequired
  Live variables captured in the snapshot. 0 is allowed.
- environmentIdstringrequired
- createdAtstringrequireddate-time
_reqobject
Show child attributesHide child attributes
- reqIdstring
- resTimeinteger | null

{
    "success": true,
    "code": 201,
    "message": "OK",
    "error": null,
    "data": {
        "id": "<string>",
        "label": "<string>",
        "note": "<string>",
        "variableCount": 1,
        "environmentId": "<string>",
        "createdAt": "2026-05-30T10:14:22.000Z"
    },
    "_req": {
        "reqId": "<string>",
        "resTime": 1
    }
}

Error envelope

Every failure below returns the same shape with success: false; branch on error.code, never on message.

successbooleanrequired
codeintegerrequired
The HTTP status of this response, repeated in the body.
messagestringrequired
errorobjectrequired
Machine-readable failure detail. Null on success.
Show child attributesHide child attributes
- codeenum<string>required
  Stable error code. Branch on this, never on message.
  Options: "auth.api_key_required", "auth.api_key_not_found", "auth.api_key_user_missing", "auth.api_key_owner_not_member", "auth.scope_missing", "auth.scope_ceiling_exceeded", "auth.key_project_restricted", "auth.product_restricted", "auth.permission_denied", "auth.self_mutation_forbidden", "auth.step_up_required", "auth.step_up_fresh_required", "auth.cli_token_not_accepted", "auth.two_factor_required", "auth.workspace_two_factor_required", "auth.two_factor_invalid", "auth.two_factor_replayed", "auth.two_factor_locked", "auth.two_factor_not_enabled", "auth.two_factor_already_enabled", "request.body_must_be_json", "request.body_invalid", "request.body_too_large", "request.rate_limited", "request.invalid_pagination", "workspace.not_found", "workspace.slug_conflict", "workspace.limit_reached", "workspace.delete_last", "workspace.delete_too_early", "workspace.delete_has_projects", "domain.not_configured", "domain.not_found", "domain.invalid", "domain.taken", "domain.attempt_limit", "product.not_found", "product.slug_conflict", "product.locked", "project.not_found", "project.ambiguous_product", "project.slug_conflict", "environment.not_found", "environment.slug_conflict", "environment.expose_disabled", "environment.expose_private_product", "variable.not_found", "variable.name_conflict", "variable.ciphertext_invalid", "variable.baseline_drifted", "version.not_found", "member.not_found", "member.already_exists", "member.self_invite", "member.self_mutation", "member.owner_immutable", "member.owner_cannot_leave", "member.seat_limit", "invite.already_pending", "role.owner_not_assignable", "role.limit_reached", "role.immutable", "role.in_use", "invite.not_found", "invite.expired", "role.not_found", "role.name_conflict", "key.not_found", "key.limit_reached", "webhook.not_found", "webhook.delivery_not_found", "plan.limit_reached", "plan.upgrade_required", "request.not_found", "request.method_not_allowed", "request.conflict", "auth.unauthorized", "auth.forbidden", "request.invalid", "server.error"
- resourcestring
  The resource or scope the failure relates to.
- fieldstring
  The request field that caused the failure.
dataobject | nullrequired
Null on most failures. A plan limit carries { limit, current }.
_reqobject
Show child attributesHide child attributes
- reqIdstring
- resTimeinteger | null

{
    "success": false,
    "code": 400,
    "message": "Something went wrong.",
    "error": {
        "code": "auth.api_key_required",
        "resource": "<string>",
        "field": "<string>"
    },
    "data": {},
    "_req": {
        "reqId": "<string>",
        "resTime": 1
    }
}

400Bad Request

request.invalid - note is longer than 200 characters, or the environment already holds 1,000 versions; message says which.

401Unauthorized

auth.api_key_required - the Authorization header is missing, or its value does not start with ev_sk_.
auth.api_key_not_found - the key is unknown, inactive or revoked.
auth.api_key_user_missing - the key is valid but its owner no longer exists.
auth.api_key_owner_not_member - the key's owner is no longer a member of the key's workspace.

402Payment Required

plan.upgrade_required - the project is locked by the plan's project limit. Publishing itself works on every plan, including Free.

403Forbidden

auth.scope_missing - the key lacks versions:write, or auth.key_project_restricted / auth.product_restricted for a project or product the key cannot reach.
auth.workspace_two_factor_required - the workspace requires two-factor authentication and the key's owner has not turned it on.

404Not Found

project.not_found - no project with that slug in the workspace.
request.not_found - the environment slug does not exist in the project.

409Conflict

project.ambiguous_product - the project slug exists under more than one product.

413Payload Too Large

request.body_too_large - the request body is larger than 1 MiB (1,048,576 bytes).

500Internal Server Error

server.error - an unexpected error; retry with backoff.

503Service Unavailable

server.error - the API is in maintenance mode or is missing its configuration; retry with backoff.

Authorization#

Path parameters#

Query parameters#

Request body#

Responses#

201Created#

Error envelope#

400Bad Request#

401Unauthorized#

402Payment Required#

403Forbidden#

404Not Found#

409Conflict#

413Payload Too Large#

500Internal Server Error#

503Service Unavailable#