gdb_next · GDB MCP Server MCP: Risk & Policy

WHAT IT DOES

What gdb_next does on GDB MCP Server

AI agents invoke gdb_next to trigger actions in GDB MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why gdb_next needs a policy

This tool executes the next line of code in a debugging session (GDB 'next' command), which runs program instructions. It can trigger side effects depending on what code is executed. Classified as Execute since it actively runs code; severity is medium because misuse could advance program state unexpectedly, but it is scoped to a single step in a controlled debug session.

From the tool's definition 执行一行代码 (Execute one line of code) — the tool steps through and executes program instructions in a GDB debugging session

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gdb_next Rate-limited

gdb_next stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gdb_next": {
      "limits": [
        {
          "counter": "gdb_next_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches GDB MCP Server, so you can run agents against it safely.

FAQ

Questions about gdb_next

What does the gdb_next tool do? +

执行一行代码。如果当前行包含函数调用，将跳过该函数（不进入内部）。. It is categorised as a Execute tool in the GDB MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on gdb_next? +

Register the GDB MCP Server MCP server in PolicyLayer and add a rule for gdb_next: 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 GDB MCP Server. Nothing to install.

What risk level is gdb_next? +

gdb_next is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit gdb_next? +

Yes. Add a rate_limit block to the gdb_next 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.

How do I block gdb_next completely? +

Set action: deny in the PolicyLayer policy for gdb_next. 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.

What MCP server provides gdb_next? +

gdb_next is provided by the GDB MCP Server MCP server (zjm1060/gdb-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.