Futarchy MCP Server

Instructions

Implementation Reference

• src/mcp/server/index.ts:374-418 (registration)

  MCP server tool registration for 'sellInPassMarket', including input schema (Zod) and handler function that proxies to FutarchyApiClient

  server.tool(
    "sellInPassMarket",
    "Sell tokens in the pass market for a proposal",
    {
      proposalId: z.string().describe("The ID of the proposal to trade in"),
      amount: z.number().describe("Amount to sell"),
      user: z.string().describe("User's public key"),
    },
    async ({ proposalId, amount, user }) => {
      try {
        const response = await apiClient.sellInPassMarket(proposalId, amount, user);
        
        if (!response.success) {
          return {
            content: [
              {
                type: "text" as const,
                text: response.error || 'Unknown error',
              },
            ],
            isError: true,
          };
        }
        
        return {
          content: [
            {
              type: "text" as const,
              text: JSON.stringify(response.data, null, 2),
            },
          ],
        };
      } catch (error: any) {
        return {
          content: [
            {
              type: "text" as const,
              text: `Error selling in pass market: ${error.message || 'Unknown error'}`,
            },
          ],
          isError: true,
        };
      }
    }
  );

• src/mcp/common/api.ts:194-222 (handler)

  FutarchyApiClient method that implements the sellInPassMarket API call to the backend server endpoint /proposals/{proposalId}/sell-pass

  async sellInPassMarket(proposalId: string, amount: number, userPublicKey: string): Promise<Response> {
    try {
      const response = await fetch(`${this.baseUrl}/proposals/${proposalId}/sell-pass`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          amount,
          user: userPublicKey
        })
      });
  
      if (!response.ok) {
        throw new Error(`HTTP error! Status: ${response.status}`);
      }
      const data = await response.json();
      
      return {
        success: true,
        data: data
      };
    } catch (error: any) {
      return {
        success: false,
        error: error.message || 'Failed to sell in pass market'
      };
    }
  }

• src/mcp/server/index.ts:377-381 (schema)

  Zod input schema for the sellInPassMarket MCP tool

  {
    proposalId: z.string().describe("The ID of the proposal to trade in"),
    amount: z.number().describe("Amount to sell"),
    user: z.string().describe("User's public key"),
  },

• src/mcp/bin/update-routes.js:40-54 (helper)

  Helper script defining simplified parameter types for backend routes integration

  "mcp_futarchy_routes_sellInPassMarket": {
    "proposalId": "string",
    "amount": "number",
    "user": "string"
  },
  "mcp_futarchy_routes_buyInFailMarket": {
    "proposalId": "string",
    "amount": "number",
    "user": "string"
  },
  "mcp_futarchy_routes_sellInFailMarket": {
    "proposalId": "string",
    "amount": "number",
    "user": "string"
  }