Read memory at specified addresses after running for some frames
AI agents call mgba_read_memory to retrieve information from mGBA MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves memory contents from the mGBA emulator at specified addresses. It is a read-only operation that observes internal state without modifying, executing arbitrary operations, or causing destructive changes. Even though it can access game memory during emulation, the capability is informational only.
From the tool's definition Tool name 'mgba_read_memory' and description 'Read memory at specified addresses' clearly indicate data retrieval with no modification or deletion. The tool queries emulator state without side effects.
Attacks that exploit this kind of access
Read memory at specified addresses after running for some frames. It is categorised as a Read tool in the mGBA MCP Server MCP Server, which means it retrieves data without modifying state.
Register the mGBA MCP Server MCP server in PolicyLayer and add a rule for mgba_read_memory: 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 mGBA MCP Server. Nothing to install.
mgba_read_memory 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 mgba_read_memory 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 mgba_read_memory. 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.
mgba_read_memory is provided by the mGBA MCP Server MCP server (struktured-labs/mgba-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.
Teams ship this data inside their own products. See what a licence covers →