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

With no annotations, the description carries the full behavioral burden. It discloses that the tool returns usable access and refresh tokens immediately, that the user is unverified until email click, and that most read paths still work. This is valuable beyond what a schema could convey, though it omits details like error cases or rate limits.

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 three sentences, leading with the core action, then consequential behaviors, and verification nuance. Every sentence earns its place with no redundancy or filler.

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 no output schema, the description adequately explains return tokens and the unverified state, which are critical for an agent to proceed. It lacks explicit error scenarios, but the essential behavioral context is covered; with six schema-documented parameters, this is sufficient.

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 coverage is 100%, and each parameter already has a description in the schema. The tool description adds no additional parameter-level semantic detail, so it meets the baseline but does not exceed it.

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 opens with 'Create a new TavernFinder account,' which clearly states the verb and resource. It distinguishes itself from sibling tools (create_event, rsvp_event, search_events, etc.) by targeting user registration, not events, games, or venues.

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 implies usage for creating accounts and clarifies the immediate post-condition (usable tokens) and verification status, giving clear context. It does not explicitly mention alternatives, but the sibling tools are clearly different domains, so no exclusions are needed—the context is sufficient.

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