Mutations
Upload, delete, tag, transfer, and describe assets in your Raster libraries.
Mutations change data in Raster. Every mutation requires an API key with
Write access to the target library, and is sent as a POST request to
https://api.raster.app/.
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]
email: "user@example.com"
) {
responseText
assets {
id
name
filename
contentType
created
tags
status
progress
}
}
}Each file's type and size is validated before upload. The request verifies your
API key and Write access to the library first, and 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), matching the Raster app:
they leave assets / searchAssets immediately but stay recoverable from trash
and are permanently removed after 30 days.
Parameters
Prop
Type
Returns
Prop
Type
Example
mutation {
deleteAssets(
organizationId: "acme-co"
libraryId: "barcelona"
assets: ["asset-123", "asset-456"]
) {
success
message
ids
}
}All asset IDs must belong to the specified library. The call is idempotent —
re-deleting an id that is already in trash returns "Moved 0 assets to trash",
ids: [], success: true. A key without Write access fails without moving
anything.
tagAssets
Applies one or more tags to a batch of assets in a single library.
Idempotent on (asset, tag) pairs the asset already carries — those
pairs are silent skips and don't contribute to 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.
Symmetric with tagAssets — idempotent on pairs the asset doesn't carry.
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. Cross-organization transfer is rejected with
BAD_USER_INPUT. Same source and target resolves to a no-op
(transferredCount: 0) with no writes.
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 a published asset can be corrected or replaced without changing any link to it. Works the same for a photo and for a video.
The previous default is preserved as a new variant, so it can be promoted back. The asset keeps its id, URL, and name. Its 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 has not landed 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 and 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 reflected — 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 for exactly this reason.
Example
mutation {
promoteVariant(
organizationId: "acme-co"
libraryId: "barcelona"
variantId: "var789"
) {
assetId
promotedVariantId
demotedVariantId
}
}createLibrary
Creates a new library inside an organization your API key is already scoped to. The new library is added to your key's allowlist (so the same key can use it immediately) and is shown to your whole team in the Raster app. Because the new library is granted to your key, the key must have write access — a read-only key cannot create libraries.
Parameters
Prop
Type
Returns
The new Library (zeroed counters, no tags). A taken
slug fails with LIBRARY_URL_TAKEN (409); a free-plan library cap with
LIBRARY_LIMIT_EXCEEDED (400); an organization whose Pro plan ended while it
still has more than one member with PRO_PLAN_CANCELED (403); a read-only key
with API_KEY_READ_ONLY (403).
Example
mutation {
createLibrary(organizationId: "acme-co", name: "Marketing", slug: "marketing") {
id
name
assetsCount
}
}renameLibrary
Renames a library your API key has access to. Updates the library name everywhere it is shown (including each member's view); 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
}
}