AI agents call summon_hero to retrieve information from 聚义厅MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to load or activate an AI persona/character from the server's roster. Based on the server description about summoning AI personas for collaboration, this is functionally a retrieval/instantiation operation with no apparent side effects. Sibling tools 'list_heroes' and 'search_heroes' are clearly Read operations, and 'summon_hero' likely fetches and activates a persona configuration.
From the tool's definition '召唤指定的英雄角色' (summon a specified hero character) — retrieves/instantiates an AI persona from the system
Attacks that exploit this kind of access
从聚义厅召唤指定的英雄角色. It is categorised as a Read tool in the 聚义厅MCP MCP Server, which means it retrieves data without modifying state.
Register the 聚义厅 MCP server in PolicyLayer and add a rule for summon_hero: 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 聚义厅MCP. Nothing to install.
summon_hero 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 summon_hero 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 summon_hero. 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.
summon_hero is provided by the 聚义厅 MCP server (juyitingmcp/juyitingmcp). 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.
Teams ship this data inside their own products. See what a licence covers →