REI Crypto MCP Server

Instructions

Get token prices at regular time intervals.

Parameters:
    coins: comma-separated tokens in format {chain}:{address}
    start: unix timestamp of earliest data point
    end: unix timestamp of latest data point
    span: number of data points returned
    period: duration between data points (default: '24h')
    search_width: time range on either side to find price data (default: '600')

Implementation Reference

• defillama_server.py:661-694 (handler)

  The handler function for the 'get_price_chart' tool, registered via @mcp.tool(). It constructs parameters and calls the DefiLlama API endpoint /coins/chart/{coins} to retrieve token price charts at regular intervals.

  @mcp.tool()
  async def get_price_chart(
      coins: str,
      start: Optional[int] = None,
      end: Optional[int] = None,
      span: Optional[int] = None,
      period: str = "24h",
      search_width: str = "600"
  ) -> str:
      """GET /coins/chart/{coins}
      
      Get token prices at regular time intervals.
      
      Parameters:
          coins: comma-separated tokens in format {chain}:{address}
          start: unix timestamp of earliest data point
          end: unix timestamp of latest data point
          span: number of data points returned
          period: duration between data points (default: '24h')
          search_width: time range on either side to find price data (default: '600')
      """
      params = {
          'period': period,
          'searchWidth': search_width
      }
      if start is not None:
          params['start'] = start
      if end is not None:
          params['end'] = end
      if span is not None:
          params['span'] = span
      result = await make_request('GET', f'/coins/chart/{coins}', params)
      return str(result)