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

The description does real work beyond the annotations by explaining why readOnlyHint=true applies to a tool named 'star_article' — it returns screens, buttons and fields rather than mutating anything. It also names the required follow-up tool family and notes the account scope. The API/MCP-server provenance note is tangential but harmless context.

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 core behavior is front-loaded in the first sentence and a half, which is good. However, 'from ChatGPT, Claude or any AI agent' is promotional filler and the trailing note about Inoreader's REST API/OAuth status with a checked date does not help an agent decide or invoke anything.

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 tells the agent what comes back (step-by-step screens, buttons, fields) and what the next step is. For a zero-parameter, annotation-covered tool this is close to complete; only the missing sibling differentiation is a real gap.

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 takes zero parameters and schema coverage is 100%, so there is nothing for the description to disambiguate. Baseline for a parameterless tool applies without deduction.

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 the specific action (star an article) and the account scope (the user's own Inoreader account), then immediately qualifies that it returns step-by-step instructions rather than performing the action. That reversal is clearly explained, so an agent understands the tool is a guidance provider. It does not, however, distinguish itself from sibling Inoreader tools like inoreader_tag_article or inoreader_mark_as_read.

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?

Explicitly describes the follow-on workflow: after receiving the steps, perform the action with cotlet_browser_* tools in the user's Inoreader Cloud Browser. It also states the tool opens nothing by itself, which tells the agent not to expect a completed mutation. It stops short of saying when to prefer this over other Inoreader siblings.

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