> ## Documentation Index > Fetch the complete documentation index at: https://docs.domino.ai/llms.txt > Use this file to discover all available pages before exploring further. # Bulk add attachments to bundles > Add attachments to multiple bundles in a single request. Validation (duplicate bundleId, bundle existence, project authorization, read-only state) is performed up front and any failure rejects the entire request before any write. The database insert of the resulting attachments is a single batched write, so the attachment rows are atomic. Rules-gateway propagation runs after the insert and is best-effort: if it fails the attachments remain persisted and the caller should retry — deduplication makes retries safe (already-attached items are skipped). This matches the behavior of the single-attach endpoint. ## OpenAPI ````yaml /api-specs/cloud/governance-api.json post /rpc/bulk-add-attachments openapi: 3.0.3 info: description: Service responsible for managing Domino Governance feature title: Domino Governance API contact: name: Domino Data Lab url: https://tickets.dominodatalab.com/hc/en-us email: support@dominodatalab.com license: name: Apache 2.0 url: http://www.apache.org/licenses/LICENSE-2.0.html version: '1.0' servers: - url: https://mycluster.domino.tech/api/governance/v1 description: >- Replace 'mycluster.domino.tech' with your Domino cluster hostname. For Domino Cloud customers, that is `your-subdomain`.domino.tech (e.g., acme.domino.tech). For self-hosted deployments, it is the hostname you reach the Domino UI at. security: [] paths: /rpc/bulk-add-attachments: post: tags: - attachments summary: Bulk add attachments to bundles description: >- Add attachments to multiple bundles in a single request. Validation (duplicate bundleId, bundle existence, project authorization, read-only state) is performed up front and any failure rejects the entire request before any write. The database insert of the resulting attachments is a single batched write, so the attachment rows are atomic. Rules-gateway propagation runs after the insert and is best-effort: if it fails the attachments remain persisted and the caller should retry — deduplication makes retries safe (already-attached items are skipped). This matches the behavior of the single-attach endpoint. requestBody: content: application/json: schema: type: array items: $ref: '#/components/schemas/server.BulkAddAttachmentsBundleRequest' description: Bulk add attachments request required: true responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/server.BulkAddAttachmentsResponse' '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/server.HTTPError' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/server.HTTPError' '409': description: Conflict content: application/json: schema: $ref: '#/components/schemas/server.HTTPError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/server.HTTPError' components: schemas: server.BulkAddAttachmentsBundleRequest: type: object required: - attachments - bundleId properties: attachments: type: array minItems: 1 items: $ref: '#/components/schemas/guardrails.CreateAttachment' bundleId: type: string server.BulkAddAttachmentsResponse: type: object properties: results: type: array items: $ref: '#/components/schemas/server.BulkAddAttachmentResult' server.HTTPError: type: object properties: code: description: >- Code is a stable machine-readable error identifier; absent on most errors. allOf: - $ref: '#/components/schemas/guardrails.ErrorCode' message: type: string guardrails.CreateAttachment: type: object required: - identifier - type properties: identifier: type: object source: $ref: '#/components/schemas/guardrails.AttachmentSource' type: $ref: '#/components/schemas/guardrails.AttachmentType' server.BulkAddAttachmentResult: type: object properties: attachments: type: array items: $ref: '#/components/schemas/guardrails.Attachment' bundleId: type: string guardrails.ErrorCode: type: string enum: - BUNDLE_REQUIRES_POLICY x-enum-varnames: - CodeBundleRequiresPolicy guardrails.AttachmentSource: type: string enum: - AUTO - MANUAL x-enum-varnames: - AttachmentSourceAuto - AttachmentSourceManual guardrails.AttachmentType: type: string enum: - ModelVersion - Report - DatasetSnapshotFile - Endpoint - NetAppVolumeSnapshotFile - FlowArtifact - FlowArtifactFile x-enum-varnames: - ModelVersion - Report - DatasetSnapshotFile - Endpoint - NetAppVolumeSnapshotFile - FlowArtifact - FlowArtifactFile guardrails.Attachment: type: object properties: approvalTimelineMap: type: object additionalProperties: $ref: '#/components/schemas/guardrails.ApprovalTimelineInfo' createdAt: type: string createdBy: type: object id: type: string identifier: type: object source: $ref: '#/components/schemas/guardrails.AttachmentSource' type: $ref: '#/components/schemas/guardrails.AttachmentType' guardrails.ApprovalTimelineInfo: type: object properties: approvalStatus: $ref: '#/components/schemas/guardrails.ApprovalStatus' timelineStatus: $ref: '#/components/schemas/guardrails.ApprovalTimelineStatus' updatedAt: type: string guardrails.ApprovalStatus: type: string enum: - PendingSubmission - PendingReview - Approved - ConditionallyApproved - PendingExpiration - Expired x-enum-varnames: - PendingSubmission - PendingReview - Approved - ConditionallyApproved - PendingExpiration - Expired guardrails.ApprovalTimelineStatus: type: string enum: - Valid - Invalid x-enum-varnames: - Valid - Invalid ```` ## Related topics - [Attachments](/cloud/platform-capabilities/features/governance/work-with-bundles/attachments.md) - [Work with bundles](/cloud/platform-capabilities/features/governance/work-with-bundles/index.md) - [Bulk update bundles](/api-reference/bundles/bulk-update-bundles.md) - [Delete attachment](/api-reference/attachments/delete-attachment.md)