Whether a mission script is active (GET_MISSION_FLAG) and whether a user waypoint is set.
AI agents call is_on_mission 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 tool retrieves game state information (mission flag status and waypoint existence) with no side effects, no code execution, no data modification, and no destructive or financial impact. It is purely informational and read-only.
From the tool's definition Tool name is 'is_on_mission' and description states it checks 'Whether a mission script is active' and 'whether a user waypoint is set' — both query operations that retrieve state without modification.
Attacks that exploit this kind of access
Whether a mission script is active (GET_MISSION_FLAG) and whether a user waypoint is set. 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 is_on_mission: 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.
is_on_mission 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 is_on_mission 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 is_on_mission. 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.
is_on_mission 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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