Crossmint HR Airdrop MCP

Instructions

Input Schema

Input Schema (JSON Schema)

Implementation Reference

• src/server.ts:185-202 (registration)

  Registration of the 'add_liquidity' tool in the MCP server's tool list, including name, description, and input schema.
  { name: 'add_liquidity', description: 'Add liquidity to the created token', inputSchema: { type: 'object', properties: { tokenAmount: { type: 'number', description: 'Amount of tokens to add to liquidity pool', }, solAmount: { type: 'number', description: 'Amount of SOL to add to liquidity pool', }, }, required: ['tokenAmount', 'solAmount'], }, },
• src/server.ts:611-664 (handler)

  The primary handler for the 'add_liquidity' MCP tool. Validates arguments using Zod, checks connected wallet and created token prerequisites, simulates liquidity provision by deducting SOL from state balance, and returns formatted success response.
  private async handleAddLiquidity(args: any) { if (!this.state.connectedWallet) { throw new McpError( ErrorCode.InvalidRequest, 'No wallet connected. Please connect a wallet first.' ); } if (!this.state.createdToken) { throw new McpError( ErrorCode.InvalidRequest, 'No token created. Please create a token first.' ); } // Validate input const schema = z.object({ tokenAmount: z.number().positive(), solAmount: z.number().positive(), }); const { tokenAmount, solAmount } = schema.parse(args); // Check if we have enough balance if (this.state.connectedWallet.solBalance < solAmount) { throw new McpError( ErrorCode.InvalidRequest, `Insufficient SOL balance. You have ${this.state.connectedWallet.solBalance} SOL, but ${solAmount} SOL is required.` ); } // In a real implementation, we would call the Raydium liquidity addition function // For this demo, we'll simulate liquidity addition // Update SOL balance this.state.connectedWallet.solBalance -= solAmount; return { content: [ { type: 'text', text: ` Liquidity added successfully: Token: ${this.state.createdToken.symbol} Token Amount: ${tokenAmount.toLocaleString()} ${this.state.createdToken.symbol} SOL Amount: ${solAmount} SOL Remaining SOL Balance: ${this.state.connectedWallet.solBalance} SOL Next step: Generate wallets for employees. `.trim(), }, ], }; }
• src/utils/addLiquidity.ts:24-81 (helper)

  Utility helper function to add liquidity for a token mint. Creates associated token account if needed and sends transaction (simplified simulation). Imported in server.ts and tokenUtils.ts but not called in the MCP handler.
  export async function addLiquidity( connection: Connection, payer: Keypair, mintAddress: string, tokenAmount: number, solAmount: number ): Promise<{ txId: string }> { try { console.log(`Adding liquidity: ${tokenAmount} tokens + ${solAmount} SOL`); // Convert mintAddress string to PublicKey const mintPublicKey = new PublicKey(mintAddress); // Create a transaction const transaction = new Transaction(); // Get the associated token account for the payer const tokenAccount = await getAssociatedTokenAddress( mintPublicKey, payer.publicKey ); // Check if the token account exists try { await getAccount(connection, tokenAccount); } catch (error) { // If the token account doesn't exist, create it transaction.add( createAssociatedTokenAccountInstruction( payer.publicKey, tokenAccount, payer.publicKey, mintPublicKey ) ); } // In a real implementation, this would interact with a DEX like Raydium // For now, we'll just simulate the liquidity addition by transferring tokens // to a "liquidity pool" (which is just the payer's account in this simulation) // Send the transaction const signature = await sendAndConfirmTransaction( connection, transaction, [payer] ); console.log(`Liquidity added with transaction ID: ${signature}`); return { txId: signature }; } catch (error: any) { console.error('Error adding liquidity:', error); throw new Error(`Liquidity addition failed: ${error.message}`); } }