Market Data API — Screener

naftiko: 1.0.0-alpha2
info:
  label: Market Data API — Screener
  description: 'Market Data API — Screener. 1 operations. Lead operation: Get Top Market Movers by Market type. Self-contained
    Naftiko capability covering one Alpaca business surface.'
  tags:
  - Alpaca
  - Screener
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    ALPACA_API_KEY: ALPACA_API_KEY
capability:
  consumes:
  - type: http
    namespace: data-screener
    baseUri: https://data.alpaca.markets
    description: Market Data API — Screener business capability. Self-contained, no shared references.
    resources:
    - name: v1beta1-screener-market_type-movers
      path: /v1beta1/screener/{market_type}/movers
      operations:
      - name: gettopmoversbymarkettype
        method: GET
        description: Get Top Market Movers by Market type
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: top
          in: query
          type: integer
          description: Number of top market movers to fetch (gainers and losers). Will return number top for each. By default
            10 gainers and 10 losers.
    authentication:
      type: apikey
      key: APCA-API-KEY-ID
      value: '{{env.ALPACA_API_KEY}}'
      placement: header
  exposes:
  - type: rest
    namespace: data-screener-rest
    port: 8080
    description: REST adapter for Market Data API — Screener. One Spectral-compliant resource per consumed operation, prefixed
      with /v1.
    resources:
    - path: /v1/v1beta1/screener/{market-type}/movers
      name: v1beta1-screener-market-type-movers
      description: REST surface for v1beta1-screener-market_type-movers.
      operations:
      - method: GET
        name: gettopmoversbymarkettype
        description: Get Top Market Movers by Market type
        call: data-screener.gettopmoversbymarkettype
        with:
          top: rest.top
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: data-screener-mcp
    port: 9090
    transport: http
    description: MCP adapter for Market Data API — Screener. One tool per consumed operation, routed inline through this capability's
      consumes block.
    tools:
    - name: get-top-market-movers-market
      description: Get Top Market Movers by Market type
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: data-screener.gettopmoversbymarkettype
      with:
        top: tools.top
      outputParameters:
      - type: object
        mapping: $.