Link agent wallet address via EIP-712 owner signature on Identity Registry
AI agents use set_agent_wallet to create or update resources in Waiaas — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Waiaas environment.
This tool creates or modifies the relationship between an agent and a wallet address in the Identity Registry, which is a reversible data modification. While signing via EIP-712 provides some authentication, an AI agent with access to this tool could link itself to wallets without human oversight, potentially gaining unauthorized control over multiple wallets in the system.
From the tool's definition Tool name 'set_agent_wallet' and description 'Link agent wallet address via EIP-712 owner signature on Identity Registry' indicates it modifies wallet association state by linking an agent to a wallet address through cryptographic signing.
Documented attack patterns abuse exactly the kind of access set_agent_wallet gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Waiaas, and nothing reaches the server without passing your rules. This is the rule we recommend for set_agent_wallet:
{
"version": "1",
"default": "deny",
"tools": {
"set_agent_wallet": {
"limits": [
{
"counter": "set_agent_wallet_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_agent_wallet stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Link agent wallet address via EIP-712 owner signature on Identity Registry. It is categorised as a Write tool in the Waiaas MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Waiaas MCP server in PolicyLayer and add a rule for set_agent_wallet: 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.
set_agent_wallet is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the set_agent_wallet 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.
Set action: deny in the PolicyLayer policy for set_agent_wallet. 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.
set_agent_wallet 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.
Start from Waiaas, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
126 Waiaas tools catalogued and risk-classified — across an index of 43,000+ MCP servers.