get_me

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

Beyond the readOnlyHint annotation, the description adds real behavioral context: it requires REDDIT_USERNAME/REDDIT_PASSWORD, fails in anonymous mode, and always returns the logged-in account regardless of any misleading expectations about arbitrary users. This meaningfully expands on the annotations.

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?

Three compact sentences: what the tool returns, its access requirements, and explicit guidance versus alternatives. Every sentence provides distinct value without redundancy or fluff.

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 profile retrieval tool, the description is complete: it covers purpose, content, prerequisites, failure mode, and scope limitations. No output schema exists, but the description names the main returned data (karma, account age, status flags), which is adequate.

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 input schema has zero parameters and is fully covered by the description's statement that the profile belongs to the authenticated account. With no params to document, the description naturally explains why no input is needed, meeting the baseline for parameter clarity.

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 identifies the tool as returning the authenticated user's own profile and lists key contents (karma, account age, status flags), which distinguishes it from the sibling get_user_info. It also explicitly states what the tool does not do, making its scope unambiguous.

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 says to use this instead of get_user_info when the current account is needed, and warns against using it for other users. It also provides the critical usage condition: requires user credentials and fails in anonymous mode.

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