Compute the JOAAT hash of a name (lowercased), the hash GTA/CodeWalker use for internal names.
AI agents call gtadata_joaat 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.
Hashing is a deterministic read-only operation that derives a value from an input without modifying game state or data. Even though it's part of a game-manipulation MCP server, this specific tool merely calculates a hash for lookup/reference purposes. No game state changes, memory writes, or irreversible actions occur. Classified as Read because it retrieves/computes information without side effects.
From the tool's definition Tool computes and returns a JOAAT hash of input text. The description states it 'computes' the hash—a pure mathematical transformation with no side effects, no data modification, and no external operations triggered.
Attacks that exploit this kind of access
Compute the JOAAT hash of a name (lowercased), the hash GTA/CodeWalker use for internal names. 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 gtadata_joaat: 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.
gtadata_joaat 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 gtadata_joaat 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 gtadata_joaat. 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.
gtadata_joaat 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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