Transaction Operations

Tools for broadcasting signed transactions.

Note: Transaction tools support the optional userId parameter for session persistence. Include it in every call to maintain wallet and chain state across reconnections.

broadcast_transaction

Broadcast a signed transaction to the blockchain. Used with external wallet mode when transactions are signed outside the MCP server.

Parameters

Input Format

The signedTx parameter should be a JSON string with this structure:

{
  "chainId": "galileo-4",
  "signedTx": { /* TxRaw object */ }
}

Example

{
  "signedTx": "{\"chainId\":\"galileo-4\",\"signedTx\":{\"bodyBytes\":\"...\",\"authInfoBytes\":\"...\",\"signatures\":[\"...\"]}}"
}

Workflow with External Wallets

1. Connect wallet in external mode
2. Execute an operation (e.g., execute_ado) - returns unsigned transaction
3. Sign the transaction with your external wallet (e.g., Keplr)
4. Use broadcast_transaction to submit the signed transaction

Response

Returns:

• Transaction hash
• Block height (once included)
• Success/failure status
• Gas used