disconnect_book

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

With no annotations, the description carries the behavioral disclosure burden. It discloses the key consequence: the key stays valid after this operation, and points to a separate path for actual revocation. This meaningfully clarifies the tool's non-destructive nature beyond what the name alone suggests.

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 one compact sentence with a parenthetical that earns its place. It front-loads the primary behavior and then gives the crucial limitation and alternative without extra clutter.

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 tool with an output schema available, the description fully covers what the tool does, its side effect on the key, and what to do if full invalidation is intended. Nothing necessary for correct invocation is missing.

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?

There are zero parameters, so parameter semantics are trivially satisfied. The description still adds useful context about what gets forgotten, exceeding the baseline for a no-parameter tool.

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 uses a specific verb and resource: 'Forget the saved hosted-book connection.' It clearly differentiates this from sibling tools like connect_book and connection_status by indicating it removes the local saved connection rather than creating or checking one.

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 when to use this tool: when you want to stop using a saved connection while keeping the underlying key valid. It also gives an explicit alternative—'revoke it on the book's page if you want it dead'—which helps an agent choose between disconnecting and revoking.

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