reddit_auth_url

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

The readOnlyHint annotation already signals a safe read-only operation, and the description adds important behavioral context by clarifying that the tool does not start the loopback listener. This meaningfully informs an agent about side effects beyond what the annotation alone conveys.

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 two sentences with no wasted words, front-loading the core function and then adding the practical use cases. Every sentence contributes essential selection and invocation 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?

For a zero-parameter, read-only URL-building tool, the description covers what it does, what it does not do, and when to use it. No output schema exists, but the phrase 'Build the Reddit consent URL' sufficiently conveys the expected result, making the definition complete for invocation.

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 has zero parameters and 100% schema description coverage, so there is no parameter gap to compensate for. The description appropriately focuses on behavior and usage rather than parameter details.

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 states a specific verb ('Build') and resource ('Reddit consent URL'), and explicitly distinguishes this tool from reddit_auth_login by noting it does not start the loopback listener. This makes its purpose immediately unambiguous and differentiates it from the closely related authentication sibling.

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 gives explicit when-to-use guidance: when the browser is on a different machine than the server, or to check which scopes a login would request before running reddit_auth_login. It also names the alternative tool, leaving no ambiguity about selection.

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