Pump.fun MCP Server

Instructions

Implementation Reference

• src/get-token-info.ts:37-61 (handler)

  Core handler function that initializes SDK, fetches bonding curve account for the token, computes supply, and returns token info.

  export async function getTokenInfo(tokenAddress: string) {
    const { sdk } = initializeSDK();
    console.log("SDK initialized");
  
    const mintPublicKey = new PublicKey(tokenAddress);
    console.log("Getting bonding curve account...");
    const bondingCurveAccount = await sdk.getBondingCurveAccount(mintPublicKey);
  
    if (!bondingCurveAccount) {
      console.log(`No token found with address ${tokenAddress}`);
      return null;
    }
  
    const tokenTotalSupply = (bondingCurveAccount as any).tokenTotalSupply;
    const formattedSupply = tokenTotalSupply
      ? Number(tokenTotalSupply) / Math.pow(10, DEFAULT_DECIMALS)
      : "Unknown";
  
    return {
      tokenAddress,
      bondingCurveAccount,
      formattedSupply,
      pumpfunUrl: `https://pump.fun/${tokenAddress}`,
    };
  }

• src/index.ts:56-96 (registration)

  Registers the 'get-token-info' tool with MCP server, defines input schema, and provides wrapper handler that calls core getTokenInfo function.

  server.tool(
    "get-token-info",
    "Get information about a Pump.fun token",
    {
      tokenAddress: z.string().describe("The token's mint address"),
    },
    async ({ tokenAddress }, extra) => {
      try {
        console.error(`Checking token info for: ${tokenAddress}`);
  
        const tokenInfo = await getTokenInfo(tokenAddress);
  
        if (!tokenInfo) {
          return {
            content: [
              {
                type: "text" as const,
                text: `No token found with address ${tokenAddress}`,
              },
            ],
          };
        }
  
        const formattedInfo = formatTokenInfo(tokenInfo);
  
        return createMcpResponse(formattedInfo);
      } catch (error: any) {
        console.error("Error getting token info:", error);
        return {
          content: [
            {
              type: "text" as const,
              text: `Error getting token info: ${
                error?.message || "Unknown error"
              }`,
            },
          ],
        };
      }
    }
  );

• src/index.ts:60-61 (schema)

  Zod input schema for the tool requiring 'tokenAddress' as a string.

    tokenAddress: z.string().describe("The token's mint address"),
  },

• src/get-token-info.ts:10-35 (helper)

  Helper function to initialize PumpFunSDK and Solana connection using environment RPC URL.

  export function initializeSDK() {
    const rpcUrl = process.env.HELIUS_RPC_URL;
    if (!rpcUrl) {
      throw new Error("HELIUS_RPC_URL environment variable is not set");
    }
  
    const connection = new Connection(rpcUrl);
    const provider = new AnchorProvider(
      connection,
      {
        publicKey: new PublicKey("11111111111111111111111111111111"),
        signTransaction: async () => {
          throw new Error("Not implemented");
        },
        signAllTransactions: async () => {
          throw new Error("Not implemented");
        },
      },
      { commitment: "confirmed" }
    );
  
    return {
      sdk: new PumpFunSDK(provider),
      connection,
    };
  }

• src/get-token-info.ts:63-73 (helper)

  Helper to format token info into a readable string.

  export function formatTokenInfo(
    tokenInfo: ReturnType<typeof getTokenInfo> extends Promise<infer T>
      ? NonNullable<T>
      : never
  ) {
    return [
      `Token: ${tokenInfo.tokenAddress}`,
      `Supply: ${tokenInfo.formattedSupply}`,
      `Pump.fun URL: ${tokenInfo.pumpfunUrl}`,
    ].join("\n");
  }