AI agents call list_epics to retrieve information from Flux 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 and retrieves epic data from a project without creating, modifying, deleting, or executing any operations. It has no destructive potential and poses minimal security risk, as it only exposes information already accessible to authenticated users of the Kanban board system.
From the tool's definition Tool name 'list_epics' and description 'List all epics in a project' indicate a retrieval operation with no side effects. The verb 'list' is a canonical Read operation.
Documented attack patterns abuse exactly the kind of access list_epics gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Flux MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_epics:
{
"version": "1",
"default": "deny",
"tools": {
"list_epics": {}
}
}list_epics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all epics in a project. It is categorised as a Read tool in the Flux MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Flux MCP Server MCP server in PolicyLayer and add a rule for list_epics: 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 Flux MCP Server. Nothing to install.
list_epics 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 list_epics 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 list_epics. 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.
list_epics is provided by the Flux MCP Server MCP server (sirsjg/flux). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Flux MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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25 Flux MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.