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Atomic Multi-Operations in Claude: MCP Batch Transaction Tools

#ai #api #web3 #tutorial

Complex onchain operations in Claude often require multiple separate commands — check balance, approve tokens, execute swap, verify completion. What if your AI agent could bundle these into atomic transactions through MCP tools that either succeed completely or fail safely together?

Traditional blockchain interactions force you into sequential operations where any step can fail, leaving your agent in an inconsistent state. You check a token balance, start an approval, then attempt a swap — but what happens when the approval succeeds but the swap fails due to slippage? Your tokens are approved but unused, requiring manual cleanup.

Why Atomic Operations Matter for AI Agents

AI agents need predictable outcomes. When Claude executes a complex DeFi strategy, partial failures create chaos. The agent might approve USDC for a swap, then fail the actual trade due to price movement. Now your tokens are stuck with an unwanted approval, and the agent doesn't know how to recover.

Atomic operations solve this by bundling related transactions into single units that succeed or fail together. No partial states, no manual cleanup, no confused agents trying to figure out what went wrong halfway through a 5-step operation.

WAIaaS Batch Transaction Tools

WAIaaS provides MCP tools that handle atomic multi-operations natively. Instead of separate approve + swap calls, you get single tools that manage the entire flow.

Setup Your MCP Environment

First, configure Claude Desktop to use WAIaaS as an MCP server:

{
  "mcpServers": {
    "waiaas": {
      "command": "npx",
      "args": ["-y", "@waiaas/mcp"],
      "env": {
        "WAIAAS_BASE_URL": "http://127.0.0.1:3100",
        "WAIAAS_SESSION_TOKEN": "wai_sess_<your-token>",
        "WAIAAS_DATA_DIR": "~/.waiaas"
      }
    }
  }
}
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Start the WAIaaS daemon and create a session:

# Install and start WAIaaS
npm install -g @waiaas/cli
waiaas init
waiaas start
waiaas quickset --mode mainnet

# Auto-configure MCP
waiaas mcp setup --all
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Atomic Token Swaps

Instead of separate approve and swap operations, use the integrated Jupiter swap tool:

# Traditional approach (3 separate calls, failure points between each)
# 1. Check USDC balance → success
# 2. Approve USDC to Jupiter → success  
# 3. Execute swap → FAIL (slippage) → tokens stuck approved

# WAIaaS atomic approach (single call, all-or-nothing)
User: "Swap 100 USDC for SOL using Jupiter"
→ Claude calls action-provider tool with jupiter-swap
→ Handles approval + swap + verification in one atomic operation
→ Either complete success or complete rollback
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When you ask Claude to "swap 100 USDC for SOL," the MCP tool handles the entire flow atomically. If the swap fails due to slippage, the approval is never submitted. If the approval fails, you know immediately without attempting the swap.

Batch Transactions for Complex Operations

The send-batch tool lets you group multiple operations into a single atomic transaction:

# Example: Setup liquidity provision
curl -X POST http://127.0.0.1:3100/v1/transactions/batch \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer wai_sess_<token>" \
  -d '{
    "transactions": [
      {
        "type": "TokenTransfer",
        "tokenAddress": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "to": "liquidity-pool-address",
        "amount": "1000000000"
      },
      {
        "type": "ContractCall",
        "to": "pool-contract",
        "data": "0x...",
        "value": "0"
      }
    ]
  }'
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Either all transactions in the batch succeed, or none execute. No partial liquidity provisions, no stuck tokens.

Simulation Before Execution

Every atomic operation supports dry-run simulation through the simulate-transaction tool:

curl -X POST http://127.0.0.1:3100/v1/transactions/send \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer wai_sess_<token>" \
  -d '{
    "type": "TRANSFER",
    "to": "recipient-address",
    "amount": "0.1",
    "dryRun": true
  }'
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Claude can simulate the entire multi-operation before committing, showing gas costs and expected outcomes without spending anything.

Error Handling and Recovery

When atomic operations fail, the error response indicates exactly what went wrong:

{
  "error": {
    "code": "INSUFFICIENT_BALANCE",
    "message": "Insufficient USDC balance for swap",
    "domain": "VALIDATION",
    "retryable": false
  }
}
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Claude receives clear failure information and can adjust the operation parameters (reduce amount, try different token) rather than getting stuck in partial failure states.

Advanced Atomic Patterns

Cross-Chain Bridge Operations

The LI.FI integration provides atomic cross-chain swaps:

curl -X POST http://127.0.0.1:3100/v1/actions/lifi/bridge \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer wai_sess_<token>" \
  -d '{
    "fromChain": "ethereum",
    "toChain": "polygon", 
    "fromToken": "USDC",
    "toToken": "USDC",
    "amount": "100000000"
  }'
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Either your tokens arrive on the destination chain, or the bridge operation never starts. No tokens lost in failed cross-chain transfers.

DeFi Position Management

Manage lending positions atomically through Aave:

# Atomic: supply collateral + borrow in one operation
curl -X POST http://127.0.0.1:3100/v1/actions/aave-v3/supply-and-borrow \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer wai_sess_<token>" \
  -d '{
    "supplyAsset": "WETH",
    "supplyAmount": "1000000000000000000",
    "borrowAsset": "USDC", 
    "borrowAmount": "1500000000"
  }'
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The operation ensures your collateral ratio remains healthy throughout the transaction. If the borrow would create an unsafe position, neither the supply nor borrow executes.

Quick Start with Atomic Operations

Step 1: Install WAIaaS MCP Server 

npm install -g @waiaas/cli
waiaas init --auto-provision
waiaas start
waiaas quickset
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Step 2: Configure Claude Desktop

Add the MCP server configuration:

waiaas mcp setup --all
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This auto-updates your claude_desktop_config.json with the correct connection details.

Step 3: Test Atomic Operations

Ask Claude to perform complex operations:

  • "Swap 50 USDC for SOL and stake the result with Jito"
  • "Bridge 100 USDC from Ethereum to Polygon, then supply to Aave"
  • "Check my DeFi positions and rebalance if health factor is below 2.0"

Step 4: Monitor Execution

Claude will show you the atomic operation status:

✅ Simulating swap: 50 USDC → 0.234 SOL (slippage: 0.5%)
✅ Atomic execution: approve + swap completed
✅ Transaction confirmed: signature xyz...
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Step 5: Handle Policy Restrictions

WAIaaS enforces safety policies on atomic operations. Configure appropriate limits:

curl -X POST http://localhost:3100/v1/policies \
  -H 'Content-Type: application/json' \
  -H 'X-Master-Password: <password>' \
  -d '{
    "walletId": "<wallet-uuid>",
    "type": "SPENDING_LIMIT",
    "rules": {
      "instant_max_usd": 100,
      "delay_max_usd": 1000
    }
  }'
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Large atomic operations may require approval, ensuring your agent can't execute massive trades without human oversight.

Atomic batch transactions transform unpredictable multi-step blockchain operations into reliable single-call tools that either work completely or fail safely. Your Claude agent can now handle complex DeFi strategies without getting stuck in partial failure states.

Ready to give Claude atomic onchain powers? Check out the GitHub repository and start building at WAIaaS.ai.

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