subscribe_txpush

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

No annotations are provided, so the description carries the full burden of disclosure. It only states the action without revealing side effects (e.g., creates a webhook subscription, overwrites existing callback URL, triggers setup). There is no mention of authentication needs, rate limits, or confirmations. The description is insufficient for understanding what happens when the tool is called.

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 a single sentence, which is concise but overly terse. It lacks critical details that should be present for a tool with three required parameters and no schema descriptions. The brevity sacrifices usefulness; not every sentence earns its place because it omits necessary information.

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 tool's complexity (3 required params, subscription operation, sibling set of 41 tools), the description is incomplete. It does not explain the output (though an output schema exists), prerequisites, error conditions, or what constitutes a successful subscription. An agent cannot reliably determine correct usage without additional context.

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 schema covers 0% of parameter descriptions, so the description must compensate, but it does not. The parameter names (customer_id, account_id, callback_url) are somewhat self-explanatory, but no constraints are provided (e.g., valid URL format, required HTTPS, maximum length, uniqueness). The agent cannot infer the correct format or constraints from the description.

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 'account', and the context 'TxPUSH webhook notifications'. It is specific and distinguishes from the sibling tool 'disable_txpush' which would unsubscribe. However, it does not explicitly differentiate from the many other subscription or notification tools among the 41 siblings, missing a clear 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?

No guidance is provided on when to use this tool versus alternatives, such as 'disable_txpush' for unsubscribing. There is no mention of prerequisites (e.g., account must exist, customer must be valid) or conditions where the tool should not be used (e.g., already subscribed). The agent receives no context for appropriate invocation.

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