OpenCost API

naftiko: 1.0.0-alpha2
info:
  label: OpenCost API
  description: The OpenCost API provides real-time and historical reporting of Kubernetes workload costs and underlying cloud
    infrastructure spend. OpenCost is an open source CNCF specification and reference implementation for Kubernetes cost monitoring
    and FinOps.
  tags:
  - Opencost
  - API
  created: '2026-05-06'
  modified: '2026-05-06'
capability:
  consumes:
  - type: http
    namespace: opencost
    baseUri: http://localhost:9003
    description: OpenCost API HTTP API.
    resources:
    - name: allocation
      path: /allocation
      operations:
      - name: getallocation
        method: GET
        description: Query Kubernetes workload cost allocations
        inputParameters:
        - name: window
          in: query
          type: string
          required: true
          description: Duration of time over which to query.
        - name: aggregate
          in: query
          type: string
          description: Field by which to aggregate (namespace, controller, label:app, etc.).
        - name: step
          in: query
          type: string
          description: Duration of a single allocation set.
        - name: accumulate
          in: query
          type: boolean
        - name: resolution
          in: query
          type: string
        - name: includeIdle
          in: query
          type: boolean
        - name: shareIdle
          in: query
          type: boolean
        - name: idleByNode
          in: query
          type: boolean
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: assets
      path: /assets
      operations:
      - name: getassets
        method: GET
        description: Query underlying cloud infrastructure asset costs
        inputParameters:
        - name: window
          in: query
          type: string
          required: true
        - name: aggregate
          in: query
          type: string
        - name: accumulate
          in: query
          type: boolean
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: cloudcost
      path: /cloudCost
      operations:
      - name: getcloudcost
        method: GET
        description: Query cloud provider billing data
        inputParameters:
        - name: window
          in: query
          type: string
          required: true
        - name: aggregate
          in: query
          type: string
        - name: accumulate
          in: query
          type: string
        - name: filter
          in: query
          type: string
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: customcost-timeseries
      path: /customCost/timeseries
      operations:
      - name: getcustomcosttimeseries
        method: GET
        description: Custom cost timeseries data
        inputParameters:
        - name: window
          in: query
          type: string
          required: true
        - name: aggregate
          in: query
          type: string
        - name: accumulate
          in: query
          type: string
        - name: filter
          in: query
          type: string
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: customcost-total
      path: /customCost/total
      operations:
      - name: getcustomcosttotal
        method: GET
        description: Custom cost totals
        inputParameters:
        - name: window
          in: query
          type: string
          required: true
        - name: aggregate
          in: query
          type: string
        - name: accumulate
          in: query
          type: string
        - name: filter
          in: query
          type: string
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
  exposes:
  - type: rest
    port: 8080
    namespace: opencost-rest
    description: REST adapter for OpenCost API.
    resources:
    - path: /allocation
      name: getallocation
      operations:
      - method: GET
        name: getallocation
        description: Query Kubernetes workload cost allocations
        call: opencost.getallocation
        outputParameters:
        - type: object
          mapping: $.
    - path: /assets
      name: getassets
      operations:
      - method: GET
        name: getassets
        description: Query underlying cloud infrastructure asset costs
        call: opencost.getassets
        outputParameters:
        - type: object
          mapping: $.
    - path: /cloudCost
      name: getcloudcost
      operations:
      - method: GET
        name: getcloudcost
        description: Query cloud provider billing data
        call: opencost.getcloudcost
        outputParameters:
        - type: object
          mapping: $.
    - path: /customCost/timeseries
      name: getcustomcosttimeseries
      operations:
      - method: GET
        name: getcustomcosttimeseries
        description: Custom cost timeseries data
        call: opencost.getcustomcosttimeseries
        outputParameters:
        - type: object
          mapping: $.
    - path: /customCost/total
      name: getcustomcosttotal
      operations:
      - method: GET
        name: getcustomcosttotal
        description: Custom cost totals
        call: opencost.getcustomcosttotal
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    port: 9090
    namespace: opencost-mcp
    transport: http
    description: MCP adapter for OpenCost API for AI agent use.
    tools:
    - name: getallocation
      description: Query Kubernetes workload cost allocations
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: opencost.getallocation
      with:
        window: tools.window
        aggregate: tools.aggregate
        step: tools.step
        accumulate: tools.accumulate
        resolution: tools.resolution
        includeIdle: tools.includeIdle
        shareIdle: tools.shareIdle
        idleByNode: tools.idleByNode
      inputParameters:
      - name: window
        type: string
        description: Duration of time over which to query.
        required: true
      - name: aggregate
        type: string
        description: Field by which to aggregate (namespace, controller, label:app, etc.).
      - name: step
        type: string
        description: Duration of a single allocation set.
      - name: accumulate
        type: boolean
        description: accumulate
      - name: resolution
        type: string
        description: resolution
      - name: includeIdle
        type: boolean
        description: includeIdle
      - name: shareIdle
        type: boolean
        description: shareIdle
      - name: idleByNode
        type: boolean
        description: idleByNode
      outputParameters:
      - type: object
        mapping: $.
    - name: getassets
      description: Query underlying cloud infrastructure asset costs
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: opencost.getassets
      with:
        window: tools.window
        aggregate: tools.aggregate
        accumulate: tools.accumulate
      inputParameters:
      - name: window
        type: string
        description: window
        required: true
      - name: aggregate
        type: string
        description: aggregate
      - name: accumulate
        type: boolean
        description: accumulate
      outputParameters:
      - type: object
        mapping: $.
    - name: getcloudcost
      description: Query cloud provider billing data
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: opencost.getcloudcost
      with:
        window: tools.window
        aggregate: tools.aggregate
        accumulate: tools.accumulate
        filter: tools.filter
      inputParameters:
      - name: window
        type: string
        description: window
        required: true
      - name: aggregate
        type: string
        description: aggregate
      - name: accumulate
        type: string
        description: accumulate
      - name: filter
        type: string
        description: filter
      outputParameters:
      - type: object
        mapping: $.
    - name: getcustomcosttimeseries
      description: Custom cost timeseries data
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: opencost.getcustomcosttimeseries
      with:
        window: tools.window
        aggregate: tools.aggregate
        accumulate: tools.accumulate
        filter: tools.filter
      inputParameters:
      - name: window
        type: string
        description: window
        required: true
      - name: aggregate
        type: string
        description: aggregate
      - name: accumulate
        type: string
        description: accumulate
      - name: filter
        type: string
        description: filter
      outputParameters:
      - type: object
        mapping: $.
    - name: getcustomcosttotal
      description: Custom cost totals
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: opencost.getcustomcosttotal
      with:
        window: tools.window
        aggregate: tools.aggregate
        accumulate: tools.accumulate
        filter: tools.filter
      inputParameters:
      - name: window
        type: string
        description: window
        required: true
      - name: aggregate
        type: string
        description: aggregate
      - name: accumulate
        type: string
        description: accumulate
      - name: filter
        type: string
        description: filter
      outputParameters:
      - type: object
        mapping: $.