Solana MCP Server

Instructions

Implementation Reference

• src/index.ts:902-930 (handler)

  The handler function that executes the create_spl_token tool. It retrieves the wallet, ensures connection, creates a new SPL token mint using createMint from @solana/spl-token, sets mint and optional freeze authority, and returns the mint address and details.

  async function handleCreateSplToken(args: any) {
    const { walletName, decimals = 9, freezeAuthority = false } = args;
  
    const wallet = wallets.get(walletName);
    if (!wallet) {
      throw new Error(`Wallet '${walletName}' not found`);
    }
  
    ensureConnection();
  
    const freezeAuthorityPubkey = freezeAuthority ? wallet.keypair.publicKey : null;
  
    const mint = await createMint(
      connection,
      wallet.keypair,
      wallet.keypair.publicKey,
      freezeAuthorityPubkey,
      decimals
    );
  
    return {
      success: true,
      tokenMint: mint.toString(),
      decimals,
      mintAuthority: wallet.keypair.publicKey.toString(),
      freezeAuthority: freezeAuthorityPubkey ? freezeAuthorityPubkey.toString() : null,
      explorerUrl: `https://explorer.solana.com/address/${mint.toString()}?cluster=${currentNetwork}`
    };
  }

• src/index.ts:306-321 (schema)

  Input schema definition for the create_spl_token tool, specifying parameters: walletName (required), decimals (optional, default 9), freezeAuthority (optional, default false). Used for validation in MCP protocol.

  inputSchema: {
    type: "object",
    properties: {
      walletName: {
        type: "string",
        description: "Name of the wallet that will be the mint authority"
      },
      decimals: {
        type: "number",
        description: "Number of decimal places for the token (default: 9)"
      },
      freezeAuthority: {
        type: "boolean",
        description: "Whether to enable freeze authority (default: false)"
      }
    },

• src/index.ts:303-323 (registration)

  Registration of the create_spl_token tool in the tools array returned by ListToolsRequestSchema, including name, description, and input schema.

  {
    name: "create_spl_token",
    description: "Create a new SPL token with specified decimals",
    inputSchema: {
      type: "object",
      properties: {
        walletName: {
          type: "string",
          description: "Name of the wallet that will be the mint authority"
        },
        decimals: {
          type: "number",
          description: "Number of decimal places for the token (default: 9)"
        },
        freezeAuthority: {
          type: "boolean",
          description: "Whether to enable freeze authority (default: false)"
        }
      },
      required: ["walletName"]
    }

• src/index.ts:1330-1331 (registration)

  Dispatch logic in the main CallToolRequestSchema handler's switch statement that routes calls to the create_spl_token tool to its handler function.

  case "create_spl_token":
    result = await handleCreateSplToken(args);