Polymarket MCP Server

Instructions

Implementation Reference

• src/tools/gamma/sports.ts:23-40 (handler)

  The tool definition and handler for "get_sports_teams" which invokes the GammaApi service.

  server.tool(
    "get_sports_teams",
    "List teams for a given sport on Polymarket.",
    {
      sport: z.string().optional().describe("Sport code (e.g. 'nba', 'nfl', 'epl')"),
    },
    async (args) => {
      try {
        const data = await gamma.getSportsTeams(args.sport);
        return { content: [{ type: "text", text: JSON.stringify(data, null, 2) }] };
      } catch (error) {
        return {
          content: [{ type: "text", text: `Error: ${(error as Error).message}` }],
          isError: true,
        };
      }
    },
  );

• src/api/gamma.ts:146-150 (handler)

  The actual implementation of the "getSportsTeams" logic that fetches data from the API client.

  async getSportsTeams(sport?: string): Promise<GammaSportsTeam[]> {
    const query: Record<string, string | undefined> = {};
    if (sport) query.sport = sport;
    return this.client.gamma<GammaSportsTeam[]>("/sports/teams", query, CACHE_TTLS.sports);
  }