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

Annotations cover the safety profile (destructive, non-idempotent, open-world), and the description adds genuinely new behavioral context: every released response runs the full response.created flow (owner email, respondent receipt, webhooks, integrations), and ask-policy connections require a human approval link. That explains the side effects the annotations only hint at. It stops short of stating whether partially-released batches are retry-safe.

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?

Three short sentences, front-loaded with the action, then the consequences, then the selection mechanics. No filler or restatement of the title.

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?

An output schema exists so return values need not be described, and the description covers side effects and the approval-link exception. The one gap is not saying what happens on partial failure or whether the human-approval path is blocking, which matters for a destructive, non-idempotent tool.

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 67% and responseIds carries no schema description, so the description's "Name responseIds or pass all=true" meaningfully fills the gap by clarifying mutual exclusivity and intent. The 200-item cap and the form identifier format are left entirely to the schema.

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?

States a specific action (accept/release) on a specific resource (responses withheld by the trust policy), and the second sentence explains what the operation triggers downstream. An agent can distinguish this from the read-only sibling fillo_list_held_responses and from fillo_redeliver_responses without opening any schema.

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?

"Name responseIds or pass all=true" gives concrete invocation guidance and implies the two selection modes. It does not, however, say when to prefer this over alternatives such as listing held responses first, or what prerequisite state a response must be in. Clear context, no explicit exclusions.

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