x_api_chat_media_upload_finalize

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

With no annotations, the description fully carries the burden. It explicitly labels the tool as 'mutating, high-risk', lists required OAuth scopes, explains environment-selection behavior (scopeTenantId with scopeUserId/scopeAccountId), enumerates common failure conditions, and gives a safety warning. This goes far beyond typical disclosure.

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 long but well-structured with labeled sections. It front-loads the purpose and usage. The 'Use when' line is tautological ('Finalize Chat Media Upload'), and some content is repeated (e.g., mutating risk appears in both Risk and Safety warnings), but overall each section adds value.

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 complex tool with 8 parameters, no output schema, and no annotations, the description is exceptionally complete. It includes expected response shape, failure conditions, prerequisites, recommended follow-up tools, and a concrete example, leaving little ambiguity for an agent.

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. It explains the key parameters: id (path, string, required), body as request payload, and the scoping behavior for scopeTenantId/scopeUserId/scopeAccountId, plus credentialKey. However, authorizationKey and preferredAuthType are not described, leaving a minor gap.

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 'Finalize Chat Media Upload', a specific verb and resource that clearly identifies the action. It is distinguished from siblings like initialize, append, and download by the word 'finalize', and the overall context makes its role in the upload flow evident.

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?

Explicit 'Use when' and 'Do not use when' sections provide clear guidance, including a directive to prefer x_schema_discovery or x_query_suggestion for exploration, and to use auth/configuration tools when needed. This is exactly the kind of alternative and exclusion advice expected.

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