create_keystore

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

With no annotations provided, the description carries full responsibility for behavioral disclosure. It only states 'Create', implying a write operation, but fails to mention whether it overwrites existing files, what happens if the path already exists, the type of keystore generated, or any authentication requirements. For a tool that creates a sensitive artifact, this is insufficient transparency.

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 a single sentence, which is concise but at the expense of completeness. It is front-loaded with the core action, but there is no structured information about when to use the tool or what it returns. It could be reorganized to include bullet points or additional context without being verbose.

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 that the tool has 6 parameters (4 required), no output schema, and no annotations, the description is insufficiently complete. It does not mention return values, error conditions, or prerequisites (e.g., directory existence). For a file-creating tool with multiple optional fields, more context is needed for safe invocation.

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?

All six parameters have descriptions in the schema (100% coverage), so the baseline is 3. The description does not add any additional meaning beyond what the schema provides. It does not explain domain-specific conventions (e.g., key alias uniqueness) or relationships between parameters (e.g., keyPassword and keystorePassword). The description adds no value over 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?

The description 'Create a new keystore for APK signing' clearly states the action (Create) and the resource (keystore) with a specific purpose (APK signing). It distinguishes from sibling tools like list_keystores, sign_apk, and verify_apk_signature, which are different operations. However, it could be more specific (e.g., keystore format) and does not explicitly differentiate itself from potential sibling tools that might also create something.

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 provides no guidance on when to use this tool versus alternatives. Sibling tools suggest it should be used before signing APKs, but the description does not mention prerequisites, typical workflow placement, or situations where another tool might be more appropriate. The one-sentence description lacks any usage context.

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