Resolve a multi-level pointer path: [base] +off1 -> +off2 -> ... -> final address (validates hops).
AI agents call read_chain 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.
Although this is a Read operation (no data modification), the severity is high because unrestricted memory reading in GTAV could expose sensitive runtime state, player position, NPC behavior patterns, or exploit vectors that enable follow-on attacks via sibling tools like call_native, call_function, or write operations.
From the tool's definition read_chain resolves a multi-level pointer path to a final address, reading game memory without modifying it. The description explicitly states it 'Resolve[s] a multi-level pointer path' and 'validates hops', indicating introspection-only behavior.
Attacks that exploit this kind of access
Resolve a multi-level pointer path: [base] +off1 -> +off2 -> ... -> final address (validates hops). 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 read_chain: 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.
read_chain 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 read_chain 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 read_chain. 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.
read_chain 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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