openapi: 3.1.0
info:
  title: Fodda Context Delivery API
  description: Interface for retrieving expert context graphs and structured insight manifests. Supplemental data sources are available via MCP tools only.
  version: 1.2.0
servers:
- url: https://api.fodda.ai/v1
paths:
  /psfk/overview:
    post:
      summary: PSFK Macro Overview (Public — no API key required)
      description: LLM-synthesized executive summary of macro trends. Rate limited to 10 req/min.
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                industry:
                  type: string
                sector:
                  type: string
                region:
                  type: string
      responses:
        '200':
          description: Executive summary with meta patterns and emerging signals
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
  /graphs:
    get:
      summary: List available context graphs
      description: Returns a registry of all available knowledge graphs with metadata including curator, domain, update frequency, and record counts.
      responses:
        '200':
          description: A stable list of graphs
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Graph'
  /graph-slice:
    get:
      summary: Graph Preview (Public)
      description: Returns a public JSON-LD preview of a graph's top trending topics or a supplemental source's metadata. No authentication required.
      parameters:
      - name: graph_id
        in: query
        schema:
          type: string
        description: Knowledge graph identifier
      - name: source_id
        in: query
        schema:
          type: string
        description: Supplemental source identifier
      responses:
        '200':
          description: JSON-LD preview with Schema.org Dataset type
          content:
            application/ld+json:
              schema:
                type: object
                properties:
                  '@context':
                    type: string
                    example: https://schema.org/
                  '@type':
                    type: string
                    example: Dataset
                  name:
                    type: string
                  description:
                    type: string
                  items:
                    type: array
                    items:
                      type: object
  /graphs/{graph_id}/search:
    post:
      summary: Graph Search
      description: Hybrid vector + keyword search across a knowledge graph. Accepts semantic queries and returns ranked trend nodes with relevance scores.
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
        description: Graph identifier (e.g., retail, beauty, sports, sic, pew, ce-design, fashion)
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - query
              properties:
                query:
                  type: string
                limit:
                  type: integer
                  default: 10
                  maximum: 50
                use_semantic:
                  type: boolean
                  default: true
      responses:
        '200':
          description: Ranked search results with relevance scores
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/nodes/{node_id}:
    get:
      summary: Node Retrieval
      description: Get a single node's full metadata and properties.
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      - name: node_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Complete node property set
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/neighbors:
    post:
      summary: Neighbor Traversal
      description: 'Explore connected nodes from a starting node. Depth-limited graph traversal (max depth: 2).'
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Connected nodes and relationships
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/evidence:
    post:
      summary: Evidence Retrieval
      description: Fetch source articles and signals backing a trend.
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Linked source articles, case studies, and structured evidence
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/labels/{label}/values:
    get:
      summary: Filter Values
      description: Discover available values for a label or category (e.g., Technology, Audience, RetailerType).
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      - name: label
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Valid filter values
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/adjacent:
    get:
      summary: Adjacent Trend Discovery
      description: Find semantically similar trends via vector cosine similarity.
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Trends ranked by cosine similarity to a seed node
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
  /graphs/{graph_id}/statistics:
    get:
      summary: Statistics Search
      description: Semantic search over curated statistics and data points (Metric nodes) with parent trend context.
      parameters:
      - name: graph_id
        in: path
        required: true
        schema:
          type: string
      - name: query
        in: query
        required: true
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
          default: 10
          maximum: 50
      - name: min_score
        in: query
        schema:
          type: number
          default: 0.7
      - name: include_signals
        in: query
        schema:
          type: boolean
      responses:
        '200':
          description: Statistics with parent trend context
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
      security:
      - apiKey: []
components:
  schemas:
    Graph:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        description:
          type: string
        curator:
          type: string
        domain:
          type: string
    ApiResponse:
      type: object
      properties:
        ok:
          type: boolean
        requestId:
          type: string
        schema_version:
          type: string
        search_path:
          type: string
          description: vector or keyword
        deterministic:
          type: boolean
        dataStatus:
          type: string
          description: TREND_MATCH, NO_MATCH, etc.
        rows:
          type: array
          items:
            type: object
            properties:
              rowId:
                type: string
              rowName:
                type: string
              rowSummary:
                type: string
              _score:
                type: number
        meta:
          type: object
          properties:
            decision:
              type: string
            usage:
              type: object
              properties:
                total_billable_units:
                  type: integer
  securitySchemes:
    apiKey:
      type: apiKey
      name: X-API-Key
      in: header
      description: Required for all endpoints except POST /v1/psfk/overview (public).