AI agents call shelby_account to retrieve information from Shelby without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays account metadata (name, address, balance, network) without creating, modifying, deleting, or executing any operations. It is a read-only query operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool description states it 'Show[s] current Shelby account info: name, address, balance, and active network context' — purely informational retrieval with no modification or side effects.
Attacks that exploit this kind of access
Show current Shelby account info: name, address, balance, and active network context. It is categorised as a Read tool in the Shelby MCP Server, which means it retrieves data without modifying state.
Register the Shelby MCP server in PolicyLayer and add a rule for shelby_account: 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 Shelby. Nothing to install.
shelby_account 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 shelby_account 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 shelby_account. 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.
shelby_account is provided by the Shelby MCP server (jasekeee/shelby-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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