Respond to a T3 pending action

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

The sentence 'The gateway forwards the supplied response and does not independently verify human confirmation' adds meaningful behavioral context beyond the annotations, warning agents that the tool is an unchecked forwarding mechanism. Annotations already indicate mutation (readOnlyHint=false) and non-destructiveness, and the description complements them without contradiction.

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 tight sentences, with the core purpose front-loaded and the behavioral caveat kept separate and brief. There is no filler or redundant restatement of the tool name.

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 6-parameter tool with nested objects and an idempotencyKey, the description omits necessary invocation details, particularly how kind selects between decision and answers. The presence of an output schema helps but does not compensate for the missing request-payload semantics.

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 description coverage is 0%, so the description must compensate for undocumented parameters, but it only clarifies requestId and kind in broad terms. The important relationship between 'kind' and the payload (decision for approval vs answers for user_input) is not addressed, and idempotencyKey/threadId receive no explanation.

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?

Description clearly states the verb 'Respond' and the resource ('T3 approval or user-input request'), and identifies the stable requestId as the addressing mechanism. This is specific enough to distinguish it from sibling tools like t3_pending_actions_list or t3_run_interrupt.

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 conveys clear context: use this tool to respond to pending approval or user-input requests, not for other thread operations. It does not explicitly name alternatives or when-not-to-use cases, but the purpose is clear enough for an agent to route correctly.

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