全文搜索消息内容。支持按 Agent ID 筛选。使用 SQL LIKE 模糊匹配（暂无 FTS5 索引）。
AI agents call search_messages to retrieve information from Agent-Comm-Hub without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries message data without side effects. It performs searches and filtering operations typical of Read category tools. The use of SQL LIKE pattern matching is for querying existing data, not modifying it. No data creation, modification, deletion, code execution, or financial operations are involved.
From the tool's definition Tool name 'search_messages' and description indicate full-text search functionality ('全文搜索消息内容') with filtering by Agent ID. Uses SQL LIKE fuzzy matching for retrieval only, with no modification capabilities mentioned.
Attacks that exploit this kind of access
全文搜索消息内容。支持按 Agent ID 筛选。使用 SQL LIKE 模糊匹配（暂无 FTS5 索引）。. It is categorised as a Read tool in the Agent-Comm-Hub MCP Server, which means it retrieves data without modifying state.
Register the Agent-Comm-Hub MCP server in PolicyLayer and add a rule for search_messages: 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 Agent-Comm-Hub. Nothing to install.
search_messages 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 search_messages 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 search_messages. 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.
search_messages is provided by the Agent-Comm-Hub MCP server (liuboacean/agent-comm-hub). 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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