Polygon MCP Server

Instructions

Implementation Reference

• src/index.ts:159-185 (handler)

  The handler function for get_ticker_news tool. Fetches news articles for a given ticker symbol using the Polygon API v2/reference/news endpoint. Returns formatted JSON response or error message.

  get_ticker_news: async (args: { ticker: string; limit?: number }) => {
    try {
      const params: any = {
        limit: args.limit || 10
      };
      const response = await polygonApi.get(`/v2/reference/news`, {
        params: {
          ...params,
          ticker: args.ticker
        }
      });
      return {
        content: [{
          type: "text",
          text: JSON.stringify(response.data, null, 2)
        }]
      };
    } catch (error: any) {
      return {
        content: [{
          type: "text",
          text: `Error getting ticker news: ${error.response?.data?.message || error.message}`
        }],
        isError: true
      };
    }
  },

• src/index.ts:338-355 (registration)

  Tool registration in the ListTools response, defining the name, description, and input schema for get_ticker_news.

  {
    name: "get_ticker_news",
    description: "Get news articles for a ticker",
    inputSchema: {
      type: "object",
      properties: {
        ticker: {
          type: "string",
          description: "Ticker symbol (e.g., AAPL)"
        },
        limit: {
          type: "number",
          description: "Number of articles to return (default: 10)"
        }
      },
      required: ["ticker"]
    }
  },

• src/index.ts:341-354 (schema)

  Input schema definition for the get_ticker_news tool, specifying parameters ticker (required string) and optional limit (number).

  inputSchema: {
    type: "object",
    properties: {
      ticker: {
        type: "string",
        description: "Ticker symbol (e.g., AAPL)"
      },
      limit: {
        type: "number",
        description: "Number of articles to return (default: 10)"
      }
    },
    required: ["ticker"]
  }