> ## Documentation Index > Fetch the complete documentation index at: https://docs.celum.io/llms.txt > Use this file to discover all available pages before exploring further. # Start chart mirror > Chart mirror — the chart-side twin of prepull. Static sub-paths must be **Authorisation:** `registry:Prepull` on `krn:celum:registry:{id}`. **Assistant tool:** `mirror_registry_charts` ## OpenAPI ````yaml /openapi.json post /api/registries/{id}/mirror-charts openapi: 3.0.3 info: description: >- The HTTP surface of the Celum backend, generated from its own router and authorisation map — so this list cannot drift from the server that serves it. **Every operation states the IAM action and resource it is authorised against.** That pairing is the part worth reading: a policy naming the right action against the wrong resource matches nothing, and fails silently. Request and response bodies come from the Go types the handlers send and decode. Where those types do not determine the shape (an interface, a map[string]any, an unknown custom encoding), the operation says so in `x-celum-schema-gap` instead of carrying a guessed schema. title: Celum API version: 1.0.0 servers: - description: Your Celum deployment url: https://{host} variables: host: default: celum.example.com description: The host your Celum backend is served from security: - sessionCookie: [] - bearerToken: [] tags: - description: AI assistant & MCP name: ai-assistant - description: Clusters & CAPI lifecycle name: capi - description: Certificates & external secrets name: certs - description: GitOps & apps name: gitops - description: IAM, audit & auth name: iam - description: Image library name: images - description: Infrastructure & supervisors name: infrastructure - description: Networking name: networking - description: Observability & platform health name: observability - description: Platform onboarding & settings name: platform-settings - description: Projects name: projects - description: Registries & mirroring name: registries - description: Security & flows name: security - description: Storage name: storage - description: Templates & addons name: templates - description: Virtualization platform (KubeVirt/CDI) name: virt - description: Virtual machines name: vms - description: Workloads & topology name: workloads paths: /api/registries/{id}/mirror-charts: post: tags: - registries summary: Start chart mirror description: |- Chart mirror — the chart-side twin of prepull. Static sub-paths must be **Authorisation:** `registry:Prepull` on `krn:celum:registry:{id}`. **Assistant tool:** `mirror_registry_charts` operationId: post_registries_byId_mirrorCharts parameters: - description: The object's identifier. in: path name: id required: true schema: type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/api.startChartMirrorRequest.Input' required: false responses: '202': content: application/json: schema: allOf: - $ref: '#/components/schemas/api.chartMirrorJob' nullable: true type: object description: Accepted. '400': content: application/json: schema: $ref: '#/components/schemas/api.ErrorBody' description: Bad Request. '401': description: Not authenticated — no valid session cookie or API token. '403': description: >- Authenticated, but no policy allows this action on this resource. The body carries the action and resource that were evaluated. '404': content: application/json: schema: $ref: '#/components/schemas/api.ErrorBody' description: Not Found. '409': content: application/json: schema: $ref: '#/components/schemas/api.ErrorBody' description: Conflict. '500': content: application/json: schema: $ref: '#/components/schemas/api.ErrorBody' description: Internal Server Error. '503': content: application/json: schema: $ref: '#/components/schemas/api.ErrorBody' description: Service Unavailable. components: schemas: api.startChartMirrorRequest.Input: properties: charts: items: type: string nullable: true type: array versions: additionalProperties: type: string nullable: true type: object type: object x-go-type: backend/internal/api.startChartMirrorRequest api.chartMirrorJob: properties: charts: items: $ref: '#/components/schemas/api.chartMirrorStatus' nullable: true type: array completed: format: int64 type: integer done: type: boolean failed: format: int64 type: integer finishedAt: format: date-time type: string id: type: string registry: type: string registryId: format: int64 type: integer skipped: format: int64 type: integer startedAt: format: date-time type: string total: format: int64 type: integer required: - charts - completed - done - failed - id - registry - registryId - skipped - startedAt - total type: object x-go-type: backend/internal/api.chartMirrorJob api.ErrorBody: properties: error: type: string required: - error type: object api.chartMirrorStatus: properties: chart: type: string dest: type: string error: type: string key: type: string source: type: string status: type: string version: type: string required: - chart - dest - key - source - status - version type: object x-go-type: backend/internal/api.chartMirrorStatus securitySchemes: sessionCookie: description: >- The session cookie issued by the OIDC sign-in flow. This is what a browser uses. in: cookie name: k8s-gate-session type: apiKey bearerToken: description: >- An API token, minted from your own identity page. A token carries the IAM groups you held **when it was minted**, and cannot bypass deletion approval — except for guest clusters inside a project that same token created. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.