# Rotate webhook signing secret

Issues a new signing secret, demotes the existing current to previous for
a 24-hour overlap window, and returns the new plaintext value. The
plaintext is returned only here; store it immediately.

During the overlap window outgoing webhooks are signed with both secrets:
the X-Webhook-Signature header carries two v1= entries, so receivers
that verify with either secret keep accepting deliveries.

Returns 409 if a previous secret is still within its overlap window;
end it via deleteChannelPreviousWebhookSecret before rotating again.

Only valid for channels with kind=webhook; otherwise returns 400.

Endpoint: POST /channels/{channel_id}/webhook-secrets/actions/rotate
Version: 0.23.20
Security: Auth

## Path parameters:

  - `channel_id` (string, required)
    Unique identifier (UUID) of the channel.
    Example: "550e8400-e29b-41d4-a716-446655440000"

## Response 200 fields (application/json):

  - `current` (object, required)
    The newly issued signing secret, now used for all new outgoing webhooks.

  - `current.mask` (string, required)
    Masked form of a webhook signing secret: the vilna_whsec_ prefix,
four obfuscation bullets, and the last 4 characters of the random
body. Safe to display in UIs for identifying a secret without
exposing it ("is the right secret stored on my side?").

  - `current.created_at` (string, required)
    Timestamp when the resource was created.

  - `current.expires_at` (string)
    The moment after which this secret will no longer sign new
outgoing webhooks. Set only when this secret occupies the
previous slot.

  - `previous` (object)
    The secret that was just demoted to the previous slot,
retained for the 24-hour overlap. Absent when this rotation
issued the channel's first secret.

  - `secret` (string, required)
    Plaintext form of the new current secret. Store it
immediately in your secrets manager; if lost, rotate again.

## Response 400 fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.
    Example: "https://docs.vilna.io/apis/problems/invalid-request"

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.
    Example: "Invalid Request"

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.
    Example: 400

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.
    Example: "Validation error"

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.
    Example: "blockchain.name_too_long"

  - `fields` (array)
    List of invalid fields in the request

  - `fields.name` (string, required)
    The name of the invalid field
    Example: "meta"

  - `fields.reason` (string, required)
    Why this field is invalid
    Example: "Exceeded maximum data size — must not exceed 1000 characters"

## Response 401 fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.
    Example: "https://docs.vilna.io/apis/problems/unauthorized"

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.
    Example: "Unauthorized"

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.
    Example: 401

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.
    Example: "Missing or invalid authentication credentials"

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.
    Example: "auth.unauthorized"

## Response 403 fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.
    Example: "https://docs.vilna.io/apis/problems/forbidden"

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.
    Example: "Forbidden"

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.
    Example: 403

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.
    Example: "You do not have permission to perform this action"

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.
    Example: "chain.not_allowed"

## Response 404 fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.
    Example: "https://docs.vilna.io/apis/problems/not-found"

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.
    Example: "Not Found"

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.
    Example: 404

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.
    Example: "The requested resource was not found"

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.
    Example: "blockchain.not_found"

## Response 409 fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.
    Example: "https://docs.vilna.io/apis/problems/conflict"

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.
    Example: "Conflict"

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.
    Example: 409

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.
    Example: "Resource already exists with the same identifier"

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.
    Example: "invoice.address_occupied"

## Response default fields (application/problem+json):

  - `type` (string, required)
    A URI that identifies the error type.
Open it in a browser to read about this category of error.

  - `title` (string, required)
    A short summary of the error type.
Use detail for information specific to this occurrence.

  - `status` (integer, required)
    The HTTP status code for this error.
Matches the status code of the HTTP response.

  - `detail` (string)
    A human-readable explanation of what went wrong in this specific case.
May be localized.

  - `instance` (string)
    A URI that identifies this specific error occurrence.
Include this value when contacting support.

  - `code` (string, required)
    Stable machine-readable error code ({domain}.{reason}) for programmatic error handling. Unlike the HTTP status or free-form detail, this code is guaranteed not to change between versions for a given error condition, so it is safe to branch on in client code. Defaults to unspecified when the server has not assigned a specific code.