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OpenAPI Specification

openapi: 3.2.0
info:
  title: Crypto Data Sentiment & Macro API
  description: 'Real-time crypto market intelligence API. Built for AI agents: gasless USDC payments via x402 protocol, one-call onboarding, and 180+ endpoints for prices, derivatives, funding, and sentiment.'
  version: '2026-10-28'
servers:
- url: https://cryptodataapi.com
tags:
- name: Sentiment & Macro
  description: Fear & Greed index, macro indicators, and stablecoin supply flows.
paths:
  /api/v1/sentiment/fear-greed:
    get:
      tags:
      - Sentiment & Macro
      summary: Get Fear Greed
      description: Fear & Greed index (multi-source averaged).
      operationId: get_fear_greed_api_v1_sentiment_fear_greed_get
      security:
      - APIKeyHeader: []
      parameters:
      - name: format
        in: query
        required: false
        schema:
          type: string
          description: 'Response format: ''markdown'' for LLM-friendly plain text'
          title: Format
        description: 'Response format: ''markdown'' for LLM-friendly plain text'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FearGreedResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /api/v1/sentiment/macro:
    get:
      tags:
      - Sentiment & Macro
      summary: Get Macro
      description: 'Macro indicators: EUR/USD, gold, treasury yields.'
      operationId: get_macro_api_v1_sentiment_macro_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MacroResponse'
      security:
      - APIKeyHeader: []
  /api/v1/sentiment/stablecoins:
    get:
      tags:
      - Sentiment & Macro
      summary: Get Stablecoins
      description: Stablecoin market cap + 14d/90d flows.
      operationId: get_stablecoins_api_v1_sentiment_stablecoins_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StablecoinResponse'
      security:
      - APIKeyHeader: []
  /api/v1/sentiment/stablecoins/remote-history:
    get:
      tags:
      - Sentiment & Macro
      summary: Get Remote Stablecoin History
      description: Daily stablecoin mcap + inflows, derived from our own DefiLlama history.
      operationId: get_remote_stablecoin_history_api_v1_sentiment_stablecoins_remote_history_get
      security:
      - APIKeyHeader: []
      parameters:
      - name: days
        in: query
        required: false
        schema:
          type: integer
          maximum: 365
          minimum: 1
          default: 90
          title: Days
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoteStablecoinHistoryResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /api/v1/sentiment/stablecoins/history:
    get:
      tags:
      - Sentiment & Macro
      summary: Get Stablecoin History
      description: Raw stablecoin market cap history timeseries.
      operationId: get_stablecoin_history_api_v1_sentiment_stablecoins_history_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StablecoinHistoryResponse'
      security:
      - APIKeyHeader: []
components:
  schemas:
    RemoteStablecoinHistoryResponse:
      properties:
        history:
          items:
            additionalProperties: true
            type: object
          type: array
          title: History
      type: object
      required:
      - history
      title: RemoteStablecoinHistoryResponse
      description: Daily stablecoin mcap + inflow history.
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    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
    FearGreedResponse:
      properties:
        value:
          type: integer
          title: Value
        classification:
          type: string
          title: Classification
        sources:
          items:
            type: string
          type: array
          title: Sources
          default: []
        individual_values:
          additionalProperties:
            type: integer
          type: object
          title: Individual Values
          default: {}
      type: object
      required:
      - value
      - classification
      title: FearGreedResponse
      description: Fear & Greed index.
    StablecoinHistoryResponse:
      properties:
        data:
          items:
            additionalProperties: true
            type: object
          type: array
          title: Data
        count:
          type: integer
          title: Count
      type: object
      required:
      - data
      - count
      title: StablecoinHistoryResponse
      description: Stablecoin market cap history timeseries.
    MacroResponse:
      properties:
        eur_usd_latest:
          title: Eur Usd Latest
          type:
          - number
          - 'null'
        eur_usd_30d_change_pct:
          title: Eur Usd 30D Change Pct
          type:
          - number
          - 'null'
        eur_usd_7d_change_pct:
          title: Eur Usd 7D Change Pct
          type:
          - number
          - 'null'
        gold_price_usd:
          title: Gold Price Usd
          type:
          - number
          - 'null'
        treasury_yield:
          title: Treasury Yield
          type:
          - number
          - 'null'
        treasury_avg_interest_rate:
          title: Treasury Avg Interest Rate
          type:
          - number
          - 'null'
      type: object
      title: MacroResponse
      description: Macro indicators.
    StablecoinResponse:
      properties:
        total_market_cap:
          title: Total Market Cap
          type:
          - number
          - 'null'
        current_mcap_billions:
          title: Current Mcap Billions
          type:
          - number
          - 'null'
        inflow_14d_billions:
          title: Inflow 14D Billions
          type:
          - number
          - 'null'
        change_14d_pct:
          title: Change 14D Pct
          type:
          - number
          - 'null'
        inflow_90d_billions:
          title: Inflow 90D Billions
          type:
          - number
          - 'null'
        change_90d_pct:
          title: Change 90D Pct
          type:
          - number
          - 'null'
        top_stablecoins:
          items:
            additionalProperties: true
            type: object
          type: array
          title: Top Stablecoins
          default: []
      type: object
      title: StablecoinResponse
      description: Stablecoin market data.
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      in: header
      name: X-API-Key