get-issued-supply · Lineage MCP Server MCP: Risk & Policy

WHAT IT DOES

What get-issued-supply does on Lineage MCP Server

AI agents call get-issued-supply to retrieve information from Lineage MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why get-issued-supply needs a policy

This tool appears to query the Lineage blockchain for issued supply information, similar to 'get-total-supply' and other read operations in the sibling toolset. There are no indicators of state modification, deletion, or external execution.

From the tool's definition Tool name 'get-issued-supply' and sibling tools like 'fetch-balance', 'fetch-transactions', 'get-balance', 'get-block-by-number', 'get-latest-block', and 'get-total-supply' indicate this retrieves blockchain state data.

Attacks that exploit this kind of access

Questions about get-issued-supply

What does the get-issued-supply tool do? +

get-issued-supply. It is categorised as a Read tool in the Lineage MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get-issued-supply? +

Register the Lineage MCP Server MCP server in PolicyLayer and add a rule for get-issued-supply: 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 Lineage MCP Server. Nothing to install.

What risk level is get-issued-supply? +

get-issued-supply is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get-issued-supply? +

Yes. Add a rate_limit block to the get-issued-supply 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 get-issued-supply completely? +

Set action: deny in the PolicyLayer policy for get-issued-supply. 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 get-issued-supply? +

get-issued-supply is provided by the Lineage MCP Server MCP server (lineage-foundation/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.