Get current 6502/6510 CPU register state. Returns all CPU registers with interpreted flags. Registers: - A: Accumulator (arithmetic operations) - X, Y: Index registers (addressing, loops) - SP: Stack pointer ($100-$1FF range) - PC: Program counter (current instruction address) - Flags: N(egative)...
AI agents call getRegisters to retrieve information from VICE C64 Emulator 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 and reports the current state of CPU registers without modifying them, memory, or emulator state. It is a pure query operation used for debugging visibility into program execution, analogous to inspection commands in debuggers. No data is created, modified, deleted, or executed as a result of calling this tool.
From the tool's definition Tool name 'getRegisters' and description explicitly state it 'Get current 6502/6510 CPU register state' and 'Returns all CPU registers' — a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get current 6502/6510 CPU register state. Returns all CPU registers with interpreted flags. Registers: - A: Accumulator (arithmetic operations) - X, Y: Index registers (addressing, loops) - SP: Stack pointer ($100-$1FF range) - PC: Program counter (current instruction address) - Flags: N(egative), V(overflow), B(reak), D(ecimal), I(nterrupt), Z(ero), C(arry) Use this to: - Check CPU state at breakpoints - Understand program flow - Debug crashes (check PC, SP) Related tools: setRegister, step, continue, status. It is categorised as a Read tool in the VICE C64 Emulator MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VICE C64 Emulator MCP Server MCP server in PolicyLayer and add a rule for getRegisters: 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 VICE C64 Emulator MCP Server. Nothing to install.
getRegisters 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 getRegisters 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 getRegisters. 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.
getRegisters is provided by the VICE C64 Emulator MCP Server MCP server (simen/vice-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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