x_action_execute

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

Annotations already show write/destructive and non-idempotent behavior, but the description adds one-shot execution semantics, the consent caveat, the requirement for writes, and a no-automatic-retry rule. These are materially important behavioral details beyond the annotations.

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 compact and front-loaded: purpose first, then conditions and safety rules. Every sentence adds distinct value, with no filler or repetition of schema details.

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 destructive, one-shot tool with no output schema, more detail on the expected result would help. The instruction 'read the receipt and inspect X' implies a receipt exists but does not explain what it contains or what 'X' refers to, leaving a meaningful ambiguity in the call/response flow.

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 only defines id as a UUID, and the description never explicitly states that id is the prepared action identifier returned by x_action_prepare. It does add some semantics ('An ID is not consent', 'Each ID can be attempted once'), but the core provenance/meaning of the only parameter is left implicit.

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 a specific verb and resource: 'Submit a prepared account action.' This clearly distinguishes the tool from siblings like x_action_prepare, x_action_cancel, and x_action_receipt, and from the many read-only tools in the sibling list.

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?

It explicitly states the precondition ('Call only with user authorization for its exact account, target and content. Requires writes enabled'), the exclusion ('never retry automatically'), and the fallback ('read the receipt and inspect X'). It also conveys that an ID alone is not consent and that each ID can be attempted only once.

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