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

Adds behavior beyond the annotations: the fact it wraps a TypeScript helper with no HTTP call, the exact mistake classes it detects, and the return shape. This usefully clarifies a pure-validation tool whose readOnlyHint=false is otherwise ambiguous. It doesn't mention side effects or performance, keeping it at 4.

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?

Front-loads the purpose and error coverage, then adds the return shape and import note. Dense but all sentences carry information; the programmatic-import note is slightly tangential for an MCP caller but still 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?

For a 12-param validator with no output schema, the description supplies the return shape and the failure semantics an agent needs. The individual parameter semantics gap (58% undocumented) is the only notable shortfall.

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?

Schema coverage is only 42% across 12 params, so the description must compensate. It partially does by naming validated categories (URL, creds, timeouts, semver) that map to url, apiKey/password, pollIntervalMs/maxScriptTimeoutSec, and tcodeApiVersion, but it never explains the remaining params (deviceId, kernelId, mockMode, allowArbitraryScripts).

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?

Specific verb+resource (validate Trilobio options) with clear scope and timing ('before generating a KERNEL_CONFIG'). Easily distinguished from siblings like pcc_trilobio_validate_script and pcc_trilobio_build_config.

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?

States when to run it (pre-flight, before options hit the gateway or device), which implies its place relative to build_config. It does not explicitly name an alternative tool or state when NOT to use it, so it falls short of a 5.

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