inoreader-mcp

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

No annotations are provided, so the description carries the full burden. It describes the conditional behavior based on the 'code' parameter and mentions OAuth 2.0 flow, but doesn't disclose important behavioral traits like error handling, token expiration, required permissions/scopes, or whether this creates persistent authentication state. The description adds basic context but lacks comprehensive behavioral disclosure.

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 perfectly concise with two sentences that each earn their place: the first establishes the core purpose, the second explains the conditional behavior. It's front-loaded with the main action and wastes no words while covering essential 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 this is an authentication tool with no annotations and no output schema, the description should do more to explain what 'returns the authorization URL' and 'exchanges it for access tokens' actually means in practice. While it covers the basic conditional flow, it lacks details about return formats, error conditions, and the overall authentication lifecycle that would be important for an agent to use this tool effectively.

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 fully documents the single 'code' parameter. The description adds marginal value by explaining the conditional logic ('If no code is provided... If a code is provided...'), but doesn't provide additional semantic context beyond what the schema already states about the parameter's purpose and format.

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 ('Authenticate with Inoreader via OAuth 2.0') and resource (authentication system), distinguishing it from all sibling tools which focus on feed analysis, article retrieval, subscription management, and other operational functions rather than authentication.

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 explicitly provides when-to-use guidance: 'If no code is provided, returns the authorization URL to visit. If a code is provided, exchanges it for access tokens.' This clearly outlines the two distinct usage scenarios based on parameter presence, with no misleading or missing guidance.

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