sign_transaction

A execute tool on the Waiaas MCP server.

SERVERWaiaas SOURCEminhoyoo-iotrust/waiaas

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/minhoyoo-iotrust-waiaas/sign-transaction.md

WHAT IT DOES

What sign_transaction does on Waiaas

AI agents invoke sign_transaction to trigger actions in Waiaas. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why sign_transaction is rated High

Signing a transaction is a critical step that authorizes and commits a blockchain operation. On a wallet server handling crypto transfers and DeFi operations, signing a transaction enables its subsequent broadcast and execution on-chain.

From the tool's definition Tool name 'sign_transaction' on a multi-chain crypto wallet server supporting transfers, DeFi, and payments

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sign_transaction safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Waiaas, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sign_transaction, this is the rule to start with:

sign_transaction Rate-limited

sign_transaction stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sign_transaction": {
      "limits": [
        {
          "counter": "sign_transaction_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Waiaas, apply this rule, and every sign_transaction call is checked against it from then on.

FAQ

Questions about sign_transaction

What does the sign_transaction tool do? +

sign_transaction is a execute tool on the Waiaas MCP server. It is categorised as a Execute tool in the Waiaas MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on sign_transaction? +

Register the Waiaas MCP server in PolicyLayer and add a rule for sign_transaction: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Waiaas. Nothing to install.

What risk level is sign_transaction? +

sign_transaction is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit sign_transaction? +

Yes. Add a rate_limit block to the sign_transaction rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block sign_transaction completely? +

Set action: deny in the PolicyLayer policy for sign_transaction. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides sign_transaction? +

sign_transaction is provided by the Waiaas MCP server (minhoyoo-iotrust/waiaas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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