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

Beyond the annotations (which only provide false hints for read-only, open-world, idempotent, and destructive traits), the description discloses that the tool creates a ticket, returns uploadTicket and putUrl, instructs the user to zip and upload, and requires authentication. This adds meaningful behavioral and workflow context that the annotations do not convey.

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 concise and front-loaded with the purpose, followed by return values, next step, and authentication requirement. The only minor redundancy is repeating the tool name at the start, but overall every sentence contributes useful information.

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?

With no output schema, the description appropriately names the key return fields and describes the upload-to-deploy workflow. It could be more detailed about the putUrl mechanics or ticket expiration, but for a one-optional-parameter tool the provided context is sufficient for an agent to invoke it and proceed to osirAppDeploy.

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 input schema already fully documents sessionKey, including when to pass it and when to omit it, so schema description coverage is 100%. The description adds no parameter-specific information, which is acceptable under the baseline for high schema coverage.

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 verb and resource: 'Create an upload ticket for deploying app source code to Osir.' It also differentiates from the closely related osirAppDeploy tool by framing this as the preparation step and explicitly naming the next call. The title 'Create app upload ticket' reinforces the same purpose.

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?

Provides clear workflow context: it says to call osirAppDeploy after uploading, which tells the agent when this tool fits in the deployment sequence. It does not explicitly name alternatives or exclusion criteria, but the sequential guidance is enough to route usage correctly among the osirApp* siblings.

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