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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true, so the safety profile is partly covered. The description adds real context beyond that: the operation targets an existing human-review submission, requires explicit confirmation, and warns against duplicate file uploads. It doesn't specify what prior content is overwritten or how partial patches behave.

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 sentences, front-loaded with the confirmation precondition and followed by the file-reuse and scope-exclusion rules. Minor verbosity in the phrase 'clarifications, scope updates, newly supplied asset references or attached production files,' but no sentence is wasted.

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 mutation's safety profile is covered by annotations plus the confirmation rule. However, for a complex destructive 6-param tool with nested objects and 0% schema coverage, the description leaves most parameter semantics unaddressed, so an agent lacks full guidance on invoking it correctly.

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% across 6 parameters, so the description must carry the burden, yet it only explains the files field (pass file references through rather than re-upload). The required confirmed and submissionId params, plus briefPatch, answers, and addedAssetIds, get no semantic explanation, leaving most of the parameter surface undocumented.

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 makes clear this sends clarifications, scope updates, or new assets/files to an already-submitted brief that is in objekts human review. The verb 'update/send' and resource (existing submitted brief) are identifiable, but it never explicitly distinguishes itself from the sibling submit_production_brief or delete_production_brief by name.

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 states a hard precondition (only after explicit user confirmation), a when-not rule ('do not use it to change a brief that exists only in the current conversation'), and a routing heuristic (reuse the files field instead of re-uploading). This is explicit when/when-not guidance rather than implied.

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