Dump OAM (Object Attribute Memory) sprite data - shows all 40 sprites with position, tile, flags, and palette
AI agents call mgba_dump_oam 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 sprite attribute memory state from the emulator. It performs a read-only query of the OAM region, returning metadata about sprite rendering (position, tile index, flags, palette). No state is modified, no code is executed, and no side effects occur. This is a straightforward data extraction operation with minimal risk if misused by an AI agent.
From the tool's definition Tool name 'mgba_dump_oam' and description 'Dump OAM (Object Attribute Memory) sprite data - shows all 40 sprites with position, tile, flags, and palette' indicates data retrieval only.
Attacks that exploit this kind of access
Dump OAM (Object Attribute Memory) sprite data - shows all 40 sprites with position, tile, flags, and palette. 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_dump_oam: 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_dump_oam 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_dump_oam 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_dump_oam. 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_dump_oam 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.
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