XR875 Build MCP

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the specific shell commands executed, which gives some insight into the tool's behavior, but doesn't address critical aspects like whether this is a read-only or destructive operation, what permissions are required, what side effects occur, or what happens on success/failure. The technical command details add value but leave significant behavioral gaps.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise—a single sentence that directly states the tool's action and the exact commands executed. There is zero wasted verbiage, and the information is front-loaded with no unnecessary elaboration. Every word earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has zero parameters, no annotations, and no output schema, the description provides the essential action and technical implementation details. However, for a tool that likely performs a significant build/packaging operation (implied by sibling tools), it lacks information about output behavior, success indicators, or error handling. The description is minimally complete but leaves important contextual gaps unaddressed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters with 100% schema description coverage, so the schema already fully documents the absence of inputs. The description doesn't need to compensate for any parameter gaps, and it appropriately doesn't mention parameters. A baseline of 4 is appropriate for a zero-parameter tool where the schema handles all documentation needs.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Pack the firmware') and provides specific technical commands ('lunch_rtos 34 && pack'), which gives a concrete understanding of what the tool does. However, it doesn't explicitly differentiate this firmware packing operation from the sibling build tools (build_all, build_c906, etc.), which appear to be related compilation/assembly operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus the sibling build tools, nor does it mention any prerequisites, dependencies, or contextual triggers. It simply states the command sequence without indicating the appropriate scenario for its invocation.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.