t2000

Instructions

Implementation Reference

• packages/mcp/src/tools/write.ts:113-149 (handler)

  The implementation of the 't2000_withdraw' tool, which handles withdrawals from savings, including a dry-run preview mode and mutex-locked execution.

  server.tool(
    't2000_withdraw',
    'Withdraw from savings back to checking. Amount is in dollars. Use "all" to withdraw everything. Set dryRun: true to preview.',
    {
      amount: z.union([z.number(), z.literal('all')]).describe('Dollar amount to withdraw, or "all"'),
      dryRun: z.boolean().optional().describe('Preview without signing (default: false)'),
    },
    async ({ amount, dryRun }) => {
      try {
        if (dryRun) {
          agent.enforcer.assertNotLocked();
          const positions = await agent.positions();
          const health = await agent.healthFactor();
          const savings = positions.positions
            .filter(p => p.type === 'save')
            .reduce((sum, p) => sum + p.amount, 0);
  
          return {
            content: [{
              type: 'text',
              text: JSON.stringify({
                preview: true,
                amount: amount === 'all' ? savings : amount,
                currentSavings: savings,
                currentHealthFactor: health.healthFactor,
              }),
            }],
          };
        }
  
        const result = await mutex.run(() => agent.withdraw({ amount }));
        return { content: [{ type: 'text', text: JSON.stringify(result) }] };
      } catch (err) {
        return errorResult(err);
      }
    },
  );