Quick check if user has sent any messages in-game (non-blocking).
AI agents call has_pending_messages to retrieve information from GTAV-CLAUDE-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only query operation that retrieves the status of pending messages without side effects. The description explicitly states it is 'non-blocking' and performs only a 'quick check', characteristic of Read category tools. The low severity reflects minimal blast radius—misuse would only result in unnecessary polling rather than unintended game state changes or data loss.
From the tool's definition The tool 'has_pending_messages' performs a non-blocking check to determine if user messages exist, with no indication of data modification, deletion, code execution, or financial impact.
Attacks that exploit this kind of access
Quick check if user has sent any messages in-game (non-blocking). It is categorised as a Read tool in the GTAV-CLAUDE-MCP MCP Server, which means it retrieves data without modifying state.
Register the GTAV-CLAUDE- MCP server in PolicyLayer and add a rule for has_pending_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 GTAV-CLAUDE-MCP. Nothing to install.
has_pending_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 has_pending_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 has_pending_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.
has_pending_messages is provided by the GTAV-CLAUDE- MCP server (tabbedscamper/gtav-claude-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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