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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered; the description reinforces the non-persisting nature and, importantly, explains the three-tier result semantics (blocking vs. design vs. review warnings). It stops short of stating error behavior for malformed designs or the severity/ordering of issue lists.

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?

Two sentences, front-loaded with the operation and scope, followed by the return contract. Every clause carries information; there is no filler or repetition of the title.

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?

With no output schema, the description correctly takes on the job of enumerating the return fields and what each warning class means, and the rich input schema covers the argument. What is missing is modest: how the call behaves on an invalid design and whether the check is exhaustive or heuristic.

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 100% and the nested 'design' schema is unusually detailed, including the wiring expectations the checks enforce (power/GND wiring, I2C pins, power-supply for motors). The description adds nothing about the parameter beyond what the schema already states, so the baseline 3 applies.

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?

States a specific verb and resource ('Runs EasyCircuit's wiring checks on a complete circuit design') and immediately scopes it with 'without saving it', which separates it from the sibling save_design. The agent knows exactly what operation occurs and that no persistence side effect follows.

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 phrase 'on a complete circuit design without saving it' clearly frames the pre-save validation workflow, and the enumerated outputs (blockingIssues that prevent saving) reinforce that this is the check that gates saving. It never explicitly names save_design as the follow-up alternative, so it falls short of a full when/when-not/alternatives statement.

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