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

With no annotations, the description carries the burden and does well: it discloses authentication requirements, redeployment behavior, secret application, microVM isolation, and static-site auto-detection. It stops short of describing deployment time, failure modes, or exact response shape, but the core behavioral profile is clear.

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 dense but every sentence earns its place: purpose first, then redeploy behavior, then required parameters, then optional parameter and authentication. It is well-front-loaded and avoids fluff.

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?

Given no annotations and no output schema, the description covers prerequisites, validation rules, supported variants, defaults, and authentication. A minor gap is the lack of explicit return-value or failure information, but the promised 'live HTTPS URL' gives the agent enough orientation.

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 only 20%, and the description compensates strongly: name format with example, all language values, uploadTicket origin, region values with meaning, and the static-site language exception. It adds meaning well beyond the raw schema for every key parameter.

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 names a specific verb and resource: 'Deploy an app to Osir (free tier) and get a live HTTPS URL'. It also distinguishes redeployment semantics for existing app names from a fresh deploy, and the microVM isolation detail sets it apart from related osir* tools.

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 gives clear workflow guidance: uploadTicket must come from osirAppCreateUpload after uploading the zipped source, and a static site should pass language 'node'. It provides required/optional fields and defaults, though it doesn't explicitly state when-not-to-use or name competing alternatives.

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