Update Newsletter

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

No annotations are provided, so the description carries full burden. It states 'Update' implying mutation, but offers no details on side effects, idempotency, permissions required, or reversibility. For a modification tool, this is a significant gap.

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?

A single clear sentence with no wasted words. It is appropriately concise for a simple tool, though it could include a bit more structure without becoming verbose.

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 the simple tool (3 parameters, no output schema, 100% schema coverage), the description provides the essential fact that it updates a 'WhatsApp Channel newsletter' and which fields are updatable. This is mostly complete for an agent to select and invoke it correctly, though behavioral transparency is lacking.

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%, so the schema already documents all parameters. The description adds little beyond restating the optional fields ('name or description'). It does not explain the 'id' parameter's role or provide context beyond the schema. Baseline 3 is appropriate as description adds marginal value.

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 it updates a newsletter, specifying the resource and allowed fields ('name or description'). It is specific with verb+resource+scope, but does not explicitly distinguish from sibling tools like 'create_newsletter' or 'refresh_newsletter', though the verb 'update' provides implicit differentiation.

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 indicates when to use the tool (to update name or description) but offers no guidance on when not to use it or alternatives. For example, it doesn't mention that creating a newsletter requires 'create_newsletter' or that bulk updates might be handled elsewhere. Basic usage context is present but lacks exclusions.

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