build_all · XR875 Build MCP: Risk & Policy

WHAT IT DOES

What build_all does on XR875 Build MCP

AI agents invoke build_all to trigger actions in XR875 Build MCP. 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 build_all needs a policy

This tool executes a complex, multi-stage build pipeline (M33 -> OTA -> C906 -> Pack) whose effects depend on the project state and build parameters. While not destructive in the traditional sense, it triggers compilation and firmware packaging operations that have irreversible side effects (overwriting binaries, modifying build artifacts).

From the tool's definition Tool name 'build_all' and description 'Build everything in sequence' indicates execution of build operations.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

build_all Rate-limited

build_all 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": {
    "build_all": {
      "limits": [
        {
          "counter": "build_all_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 XR875 Build MCP, so you can run agents against it safely.

FAQ

Questions about build_all

What does the build_all tool do? +

Build everything in sequence (M33 -> OTA -> C906 -> Pack). It is categorised as a Execute tool in the XR875 Build MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on build_all? +

Register the XR875 Build MCP server in PolicyLayer and add a rule for build_all: 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 XR875 Build MCP. Nothing to install.

What risk level is build_all? +

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

Can I rate-limit build_all? +

Yes. Add a rate_limit block to the build_all 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 build_all completely? +

Set action: deny in the PolicyLayer policy for build_all. 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 build_all? +

build_all is provided by the XR875 Build MCP server (unicorn2439614256/xr875-build-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.