> ## Documentation Index > Fetch the complete documentation index at: https://docs.mixpeek.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Ownership + runbook registry > List the ownership registry, or resolve one alert class / subsystem. Every entry names an owner AND a procedure (runbook link or inline text) — the loader rejects an entry with one but not the other, and CI pins that every declared alert class is covered by exactly one subsystem. ## OpenAPI ````yaml get /v1/ops/ownership openapi: 3.1.0 info: title: Mixpeek API description: >- This is the Mixpeek API, providing access to various endpoints for data processing and retrieval. termsOfService: https://mixpeek.com/terms contact: name: Mixpeek Support url: https://mixpeek.com/contact email: info@mixpeek.com version: '0.82' servers: - url: https://api.mixpeek.com description: Production security: - BearerAuth: [] paths: /v1/ops/ownership: get: tags: - Ops summary: Ownership + runbook registry description: |- List the ownership registry, or resolve one alert class / subsystem. Every entry names an owner AND a procedure (runbook link or inline text) — the loader rejects an entry with one but not the other, and CI pins that every declared alert class is covered by exactly one subsystem. operationId: list_ownership_v1_ops_ownership_get parameters: - name: alert_class in: query required: false schema: anyOf: - type: string - type: 'null' description: >- Resolve the subsystem covering one alert class (the names in the platform alerting rules). Unknown classes 404 loudly — an alert with no owner is a registry gap, not an empty result. title: Alert Class description: >- Resolve the subsystem covering one alert class (the names in the platform alerting rules). Unknown classes 404 loudly — an alert with no owner is a registry gap, not an empty result. - name: subsystem in: query required: false schema: anyOf: - type: string - type: 'null' description: Filter to one subsystem id. title: Subsystem description: Filter to one subsystem id. responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/OwnershipListResponse' '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Not Found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - BearerAuth: [] components: schemas: OwnershipListResponse: properties: subsystems: items: $ref: '#/components/schemas/OwnershipEntry' type: array title: Subsystems description: Registry entries matching the filters (all when none). total: type: integer title: Total type: object required: - subsystems - total title: OwnershipListResponse ErrorResponse: properties: success: type: boolean title: Success description: Always false for error responses default: false status: type: integer title: Status description: HTTP status code for this error error: $ref: '#/components/schemas/ErrorDetail' description: Error details payload type: object required: - status - error title: ErrorResponse description: Error response model. examples: - error: details: id: ns_123 resource: namespace message: Namespace not found type: NotFoundError status: 404 success: false HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError OwnershipEntry: properties: id: type: string title: Id description: Stable subsystem slug. owner: type: string title: Owner description: Lane/team that fixes this subsystem. escalation: anyOf: - type: string - type: 'null' title: Escalation description: Who to pull in when the owner is dark. runbook: anyOf: - type: string - type: 'null' title: Runbook description: Repo path or URL of the procedure doc. runbook_text: anyOf: - type: string - type: 'null' title: Runbook Text description: Inline minimal procedure when no doc exists yet. description: anyOf: - type: string - type: 'null' title: Description alert_classes: items: type: string type: array title: Alert Classes description: Alert names (infra/gke/alerting-rules.yaml) covered. type: object required: - id - owner title: OwnershipEntry description: 'One subsystem: who owns it and what to do when it pages.' ErrorDetail: properties: message: type: string title: Message description: Human-readable error message type: type: string title: Type description: Stable error type identifier (machine-readable) code: anyOf: - type: string - type: 'null' title: Code description: >- Fine-grained error code for programmatic handling (e.g., namespace_name_taken, feature_extractor_not_found). Present only when consumers may need to branch on a specific error condition. details: anyOf: - additionalProperties: true type: object - type: 'null' title: Details description: >- Optional structured details to help debugging (validation errors, IDs, etc.) type: object required: - message - type title: ErrorDetail description: Error detail model. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError securitySchemes: BearerAuth: type: http scheme: bearer description: >- Mixpeek API key, sent as `Authorization: Bearer mxp_sk_...`. Create one in Studio under Settings → API Keys, or with an admin key via `POST /v1/organizations/users/{user_email}/api-keys`. A missing header returns 403; an invalid or revoked key returns 401. ````