openapi: 3.2.0
info:
  title: MoltGuard Market Integrity API
  version: 1.5.0
  description: 'Trust & Integrity Service for the x402 Agent Economy. Sub-API of MolTrust Trust Registry (api.moltrust.ch). See also: https://api.moltrust.ch/openapi.json (parent service).'
  contact:
    name: CryptoKRI GmbH
    url: https://moltrust.ch
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: https://api.moltrust.ch/guard
  description: Production
security: []
tags:
- name: market-integrity
  description: Polymarket/Kalshi integrity checks + feed + events
paths:
  /api/market/check-free/{marketId}:
    get:
      tags:
      - market-integrity
      summary: Market integrity check (free, rate-limited 1/10min)
      description: Free-tier Polymarket/Kalshi integrity check. Rate-limited 1/10min per IP.
      operationId: getMarketCheckFree
      parameters:
      - name: marketId
        in: path
        required: true
        schema:
          type: string
        description: Polymarket condition_id or Kalshi market slug
      responses:
        '200':
          description: Market check result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketCheckResult'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitError'
  /api/market/check/{marketId}:
    get:
      tags:
      - market-integrity
      summary: Market integrity check (paid)
      description: Polymarket/Kalshi integrity check — outcome anomalies, oracle manipulation, statistical irregularities.
      operationId: getMarketCheckPaid
      security:
      - x402: []
      x-moltrust-pricing:
        amount: '0.05'
        currency: USDC
        chain: eip155:8453
      parameters:
      - name: marketId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Market check result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketCheckResult'
        '402':
          description: x402 payment required
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
  /api/market/feed:
    get:
      tags:
      - market-integrity
      summary: Aggregated market integrity feed (paid)
      description: 'NOTE per BACKLOG: this endpoint is currently in BOTH X402_PRICES and X402_FREE_PATHS in moltguard middleware; live behaviour is free. Pricing-config will be consolidated at P2-followup. Spec reflects intent (paid $0.10).'
      operationId: getMarketFeed
      security:
      - x402: []
      x-moltrust-pricing:
        amount: '0.10'
        currency: USDC
        chain: eip155:8453
      responses:
        '200':
          description: Market feed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketFeedResult'
  /api/market/sample:
    get:
      tags:
      - market-integrity
      summary: Sample market integrity response (mock, no auth)
      operationId: getMarketSample
      responses:
        '200':
          description: Sample
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketSample'
  /events/feed:
    get:
      tags:
      - market-integrity
      summary: Polymarket events feed (free — anomaly + multi_outcome scanner output)
      description: Refreshed every 6h by cron (30 */6 * * *) from ~/moltstack/agents/moltguard.py scanner. Returns last_scan, anomaly_count, multi_outcome_count, and events array.
      operationId: getEventsFeed
      responses:
        '200':
          description: Events feed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventsFeedResult'
        '404':
          description: Scan has not run yet
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    MarketCheckResult:
      type: object
      description: Full market integrity check result (Polymarket/Kalshi).
      additionalProperties: true
      properties:
        marketId:
          type: string
        integrityScore:
          type: integer
          minimum: 0
          maximum: 100
        spreadPct:
          type: number
        oracleVerified:
          type: boolean
        flags:
          type: array
          items:
            type: string
        _meta:
          $ref: '#/components/schemas/ScoreMeta'
    Error:
      type: object
      properties:
        error:
          type: string
          description: Short error code
        message:
          type: string
          description: Human-readable detail
      required:
      - error
    EventsFeedResult:
      type: object
      description: Polymarket events feed — anomaly + multi_outcome events from MoltGuard scanner. Refreshed every 6h by cron.
      properties:
        last_scan:
          type: string
          format: date-time
        total_events_scanned:
          type: integer
        anomaly_count:
          type: integer
        multi_outcome_count:
          type: integer
        events:
          type: array
          items:
            type: object
            additionalProperties: true
            properties:
              slug:
                type: string
              title:
                type: string
              category:
                type: string
              flags:
                type: array
                items:
                  type: string
              volume:
                type: number
              markets_count:
                type: integer
              detected_at:
                type: string
                format: date-time
              closed_at:
                type: string
                format: date-time
              is_live:
                type: boolean
    MarketFeedResult:
      type: object
      description: Aggregated market integrity feed across tracked markets.
      additionalProperties: true
      properties:
        generatedAt:
          type: string
          format: date-time
        markets:
          type: array
          items:
            type: object
            additionalProperties: true
    PaymentRequired:
      type: object
      description: x402 v2 challenge body. Returned with HTTP 402 when X-PAYMENT header is missing or invalid.
      properties:
        x402:
          type: object
          properties:
            version:
              type: integer
              example: 2
            accepts:
              type: array
              items:
                type: object
                properties:
                  scheme:
                    type: string
                    example: exact
                  network:
                    type: string
                    example: base
                  maxAmountRequired:
                    type: object
                    properties:
                      asset:
                        type: string
                        example: USDC
                      amount:
                        type: string
                        description: USDC base units (6 decimals)
                  payTo:
                    type: string
    MarketSample:
      type: object
      description: Mock market integrity sample. No real API call.
      additionalProperties: true
      properties:
        marketId:
          type: string
        integrityScore:
          type: integer
          minimum: 0
          maximum: 100
        flags:
          type: array
          items:
            type: string
        _meta:
          $ref: '#/components/schemas/ScoreMeta'
    ScoreMeta:
      type: object
      properties:
        service:
          type: string
          enum:
          - moltguard
        version:
          type: string
        chain:
          type: string
          example: base-<block-number>
        dataSource:
          type: string
          example: blockscout+rpc+moltrust
        timestamp:
          type: string
          format: date-time
        pricingTier:
          type: string
          enum:
          - paid
          - free-limited
          - sample
        note:
          type: string
    RateLimitError:
      type: object
      properties:
        message:
          type: string
          example: 'Free tier: max 1 request(s) per 10 minutes. Use x402 paid endpoints for unlimited access.'
  securitySchemes:
    x402:
      type: apiKey
      in: header
      name: X-PAYMENT
      description: 'x402 v2 payment receipt header. Format: "x402 <base64-encoded-receipt>". See https://x402.org/writing/x402-v2-launch.'