watch_changes

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

No annotations are provided, so the description carries the full burden. It discloses the subscription nature and delivery methods (email/webhook), but lacks details on unsubscription, subscription lifecycle, limits, or what the tool returns (e.g., a subscription ID).

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?

Two sentences: first captures action and method, second adds a critical prerequisite. No extra words, front-loaded, and every sentence earns its place.

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 6 parameters, nested objects, and no output schema, the description covers the what, how, and prerequisite. It misses the return value (e.g., subscription ID or confirmation), but overall is sufficient for an agent to understand the tool's role among 14 siblings.

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?

All 6 parameters have schema descriptions (100% coverage), but the description adds value by explaining how parameters like 'nodes', 'pillars', 'channels', and 'webhook_url' relate to the overall purpose of watching rules and pillars and getting notified.

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 the verb 'Subscribe', the resource 'regulatory change alerts', and the outcome 'get notified by email or webhook'. It specifies what can be watched ('specific rules and/or whole pillars'), distinguishing it from sibling tools like 'get_latest_changes' (one-time query) and 'browse_topics' (browsing).

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 provides the key prerequisite: 'Requires a Bidda subscription key (a free trial counts)'. It implies use for ongoing notifications rather than on-demand queries, but does not explicitly state when not to use or name alternatives.

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