Mutations
Upload, delete, tag, transfer, and describe assets in your Raster libraries.
Mutations change data in Raster. Every mutation is a POST request to
https://api.raster.app/ and needs an API key or OAuth access token with
Write access to the target library.
uploadAssets
Uploads up to 20 files to a library in a single request.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
uploadAssets(
organizationId: "acme-co"
libraryId: "barcelona"
files: [$file1, $file2]
) {
responseText
assets {
id
name
filename
contentType
created
tags
status
progress
}
}
}Each file's type and size is validated before upload. The API first checks your
key and its Write access to the library, and the request fails with an
API_KEY_NOT_AUTHORIZED_FOR_LIBRARY error if the key is not permitted.
deleteAssets
Moves one or more assets to trash (soft delete), as the Raster app does. They
leave assets and searchAssets immediately, stay recoverable from trash, and
are permanently removed after 30 days.
Trashing an asset also trashes its variants. A variant goes to trash only with
its original, so a variant id in assets fails the whole call with
400 BAD_USER_INPUT before anything moves.
Pass the original's id instead.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
deleteAssets(
organizationId: "acme-co"
libraryId: "barcelona"
assets: ["asset-123", "asset-456"]
) {
success
message
ids
}
}Ids that are not in the library are skipped. When none of the ids is in the
library, the call fails with BAD_USER_INPUT.
The call is idempotent: deleting an id that is already in
trash returns "Moved 0 assets to trash", ids: [], success: true. A call with a key that lacks Write access fails
without moving anything.
tagAssets
Applies one or more tags to a batch of assets in a single library. The call
is idempotent: (asset, tag) pairs the asset already carries are skipped and
don't count toward taggedCount.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
tagAssets(
organizationId: "acme-co"
libraryId: "barcelona"
assetIds: ["asset-123", "asset-456"]
tags: ["sunset", "landscape"]
) {
taggedCount
}
}untagAssets
Removes one or more tags from a batch of assets in a single library. Like
tagAssets, it is idempotent: pairs the
asset doesn't carry are skipped.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
untagAssets(
organizationId: "acme-co"
libraryId: "barcelona"
assetIds: ["asset-123"]
tags: ["landscape"]
) {
untaggedCount
}
}updateAssetDescription
Replaces the description on a single asset. The value is stored verbatim.
Pass an empty string to clear the field.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
updateAssetDescription(
organizationId: "acme-co"
libraryId: "barcelona"
assetId: "asset-123"
description: "Golden hour over the Mediterranean."
) {
assetId
description
}
}transferAssets
Moves a batch of assets from one library to another within the same
organization. A target library outside the organization fails with
404 API_KEY_NOT_AUTHORIZED_FOR_LIBRARY,
the same response as a library the credential cannot reach. When the source
and target are the same library, the call changes nothing and returns
transferredCount: 0.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
transferAssets(
organizationId: "acme-co"
sourceLibraryId: "barcelona"
targetLibraryId: "lisbon"
assetIds: ["asset-123", "asset-456"]
) {
transferredCount
sourceLibraryId
targetLibraryId
}
}promoteVariant
Makes one of an asset's variants its default. The variant's file replaces what the asset serves, at the same URL. Anything already embedding that URL shows the new file without being updated, so you can correct or replace a published asset without changing any link to it. It works the same for a photo and for a video.
The previous default is kept as a new variant with the name it had, so it can be promoted back. The asset keeps its id and URL and takes the promoted variant's name. The asset's description and the tags generated from its image follow the image: the promoted variant hands over any it carries, and the preserved variant keeps the ones that described it. Tags you added yourself stay on the asset. The promoted variant's own entry is removed, because its image is now the asset's.
Rejected with BAD_USER_INPUT when the id
names an original rather than a variant, when the variant is archived or still
processing, when the asset is not live, when the asset is itself still being
processed (a video whose poster is not ready yet), when the asset is neither an
image nor a video, or when the variant is a different kind of media than the
asset. If another promote is already running on the same asset, the mutation
fails with CONFLICT. Wait for it to finish, then retry.
Parameters
Prop
Type
Returns
Prop
Type
The response confirms the promote is accepted and returns the three ids. The
image swap and the removal of the promoted variant's entry complete a moment
later. Re-fetch the asset after a short delay to see the change. Its variants
list is final once the swap finishes.
Because the URL doesn't change, a browser or CDN that already cached the old image may keep serving it briefly. Assets are served with a short cache lifetime.
Example
mutation {
promoteVariant(
organizationId: "acme-co"
libraryId: "barcelona"
variantId: "var789"
) {
assetId
promotedVariantId
demotedVariantId
}
}createLibrary
Creates a new library inside an organization. The caller must be an API key with write access to at least one library or, over OAuth, an Owner of the organization. A read-only key cannot create libraries. A library created with an API key is added to that key's allowlist, so the same key can use it immediately. Your whole team sees the new library in the Raster app.
Parameters
Prop
Type
Returns
The new Library, with zeroed counters and no tags.
The call fails with:
LIBRARY_URL_TAKEN(409) when the slug is taken.LIBRARY_LIMIT_EXCEEDED(400) when the organization is at its free-plan library cap.PRO_PLAN_CANCELED(403) when the organization's Pro plan ended while it still has more than one member.API_KEY_READ_ONLY(403) when the key is read-only.FORBIDDEN(403) when an OAuth access token's account is not an Owner of the organization.
Example
mutation {
createLibrary(organizationId: "acme-co", name: "Marketing", slug: "marketing") {
id
name
assetsCount
}
}renameLibrary
Renames a library your API key has access to. The new name appears everywhere the library is shown, for every member. The URL slug is unchanged.
Parameters
Prop
Type
Returns
The updated Library. A key not authorized for the
library, or a missing library, fails with 404.
Example
mutation {
renameLibrary(organizationId: "acme-co", libraryId: "marketing", name: "Marketing 2026") {
id
name
}
}