> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arrays.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Fear & Greed Index

> [OpenAPI JSON Spec](/docs/output/v1_crypto_fear-greed-index_get.json)
Get the Crypto Fear & Greed Index time series within the given range.

**Overview**
The Fear & Greed Index measures market sentiment on a 0-100 scale:
- 0-25: Extreme Fear (may indicate buying opportunities)
- 25-50: Fear
- 50-75: Greed
- 75-100: Extreme Greed (may indicate overheated market)

**Response Fields**
- timestamp: Unix timestamp in seconds (UTC)
- value: Index value (0-100)
- time: Human-readable datetime string (YYYY-MM-DD HH:MM:SS, UTC)

**Usage Examples**
- Last 30 days: `?start_time=<now-30d>&end_time=<now>`
- Specific range: `?start_time=1704067200&end_time=1706745600`



## OpenAPI

````yaml /api-reference/openapi.json get /v1/crypto/fear-greed-index
openapi: 3.0.0
info:
  contact: {}
  description: >-
    Welcome to Arrays!


    Arrays is a unified financial data layer for both financial institutions and
    retail users, delivering comprehensive market data across crypto and equity
    markets. Our datasets cover fundamentals, ETFs, options, crypto, and more.


    Visit [arrays.org](https://arrays.org) to request an API key and start your
    free trial. You can explore our full API offerings in the documentation
    below.


    For any questions regarding APIs or pricing, please contact
    support@arrays.org.
  title: Arrays API
  version: '1.0'
servers:
  - url: https://data-tools.prd.arrays.org/api
security: []
paths:
  /v1/crypto/fear-greed-index:
    get:
      tags:
        - Crypto
      summary: Get Fear & Greed Index
      description: |-
        [OpenAPI JSON Spec](/docs/output/v1_crypto_fear-greed-index_get.json)
        Get the Crypto Fear & Greed Index time series within the given range.

        **Overview**
        The Fear & Greed Index measures market sentiment on a 0-100 scale:
        - 0-25: Extreme Fear (may indicate buying opportunities)
        - 25-50: Fear
        - 50-75: Greed
        - 75-100: Extreme Greed (may indicate overheated market)

        **Response Fields**
        - timestamp: Unix timestamp in seconds (UTC)
        - value: Index value (0-100)
        - time: Human-readable datetime string (YYYY-MM-DD HH:MM:SS, UTC)

        **Usage Examples**
        - Last 30 days: `?start_time=<now-30d>&end_time=<now>`
        - Specific range: `?start_time=1704067200&end_time=1706745600`
      parameters:
        - description: Start time (Unix timestamp in seconds)
          in: query
          name: start_time
          required: true
          schema:
            type: integer
            format: int64
        - description: >-
            End time (Unix timestamp in seconds). Must be greater than
            start_time
          in: query
          name: end_time
          required: true
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: Successfully returns fear & greed data
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/model.APIResponse'
                  - properties:
                      data:
                        items:
                          $ref: '#/components/schemas/model.FearGreedPoint'
                        type: array
                    type: object
        '400':
          description: Parameter validation error
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/model.APIResponse'
                  - properties:
                      error:
                        $ref: '#/components/schemas/model.APIError'
                    type: object
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/model.APIResponse'
                  - properties:
                      error:
                        $ref: '#/components/schemas/model.APIError'
                    type: object
      security:
        - ApiKeyAuth: []
components:
  schemas:
    model.APIResponse:
      properties:
        data: {}
        error:
          $ref: '#/components/schemas/model.APIError'
        metadata: {}
        pagination: {}
        request_id:
          type: string
        success:
          type: boolean
      type: object
    model.FearGreedPoint:
      properties:
        time:
          description: Formatted time (YYYY-MM-DD hh:mm:ss, UTC+0)
          type: string
        timestamp:
          type: integer
        value:
          type: number
      type: object
    model.APIError:
      properties:
        code:
          example: RESOURCE_NOT_FOUND
          type: string
        details:
          items:
            $ref: '#/components/schemas/model.APIErrorDetail'
          type: array
        docs_url:
          type: string
        examples:
          items:
            type: string
          type: array
        hint:
          type: string
        message:
          example: The requested resource was not found.
          type: string
        suggestions:
          items:
            type: string
          type: array
      type: object
    model.APIErrorDetail:
      properties:
        field:
          type: string
        got:
          type: string
        reason:
          type: string
      type: object
  securitySchemes:
    ApiKeyAuth:
      description: 'API Key authentication. Example: "your-api-key-here"'
      in: header
      name: X-API-Key
      type: apiKey

````