Returns a list of ERC-1155 token balances
AI agents call getERC1155Balance to retrieve information from Somnia MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries blockchain data to retrieve token balance information. It performs a read-only operation on existing data without creating, modifying, deleting, or executing any state-changing operations. The sibling tools (getBlockHeights, getBlockTransactions, etc.) are all read operations, confirming this server's purpose is data retrieval from the Somnia blockchain.
From the tool's definition Tool name 'getERC1155Balance' and description 'Returns a list of ERC-1155 token balances' indicate a retrieval operation with no modification or state change.
Attacks that exploit this kind of access
Returns a list of ERC-1155 token balances. It is categorised as a Read tool in the Somnia MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Somnia MCP Server MCP server in PolicyLayer and add a rule for getERC1155Balance: 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 Somnia MCP Server. Nothing to install.
getERC1155Balance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the getERC1155Balance 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 getERC1155Balance. 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.
getERC1155Balance is provided by the Somnia MCP Server MCP server (vastavikadi/somnia-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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