Dot 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 effectively describes key behaviors: the tool sends notifications to a device, requires a signature for proactive use, and includes a retry strategy on failure ('retry once as it may be a temporary API issue'). However, it lacks details on permissions, rate limits, or error handling beyond retries, leaving some 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 well-structured with clear sections (purpose, proactive usage rules, important note, example), and each sentence adds value without redundancy. It is slightly verbose due to the detailed example and repetition of 'proactively', but overall efficient and front-loaded with key information.

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's moderate complexity (6 parameters, no output schema, no annotations), the description provides strong contextual completeness. It covers purpose, usage guidelines, and behavioral aspects like retry logic, compensating well for the lack of annotations. However, it could improve by detailing response formats or error cases more explicitly.

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 description coverage is 100%, so the schema already documents all 6 parameters thoroughly. The description adds minimal parameter semantics beyond the schema, such as implying 'signature' is for identity in proactive cases via the usage guidelines, but does not explain parameter interactions or provide additional syntax details. This meets the baseline for high schema coverage.

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 specific action ('Send text content') and target resource ('to a Dot device'), with elaboration on the device type ('an e-ink display device') and outcome ('The text will be displayed on the e-ink screen'). It distinguishes this tool's purpose effectively, even without sibling tools for comparison.

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 explicit, detailed guidance on when to use this tool proactively (e.g., 'when you have completed a task', 'encounter an important issue', 'remind the user', 'long-running task finished'), including a mandatory requirement for proactive notifications ('MUST include your name/identity in the signature field'). It also offers an example scenario, making usage context very clear.

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