pika_generate

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

No annotations are provided, so the description carries the full burden of disclosing behavior. It only states 'Generate content' and instructs to pass params as JSON. It does not mention output format, potential cost, asynchronous processing, error handling, or side effects. This is a significant gap for a generation tool.

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, well-front-loaded sentence followed by a list of skills and a brief instruction. The skill list is long but necessary given the absence of enums in the schema. Every part serves a purpose, though the list could be considered verbose; still, it is appropriately concise for the information conveyed.

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?

Despite the presence of an output schema, the description is incomplete for a tool with 20 distinct skills. It does not explain how to construct the params JSON for any specific skill, leaving the user guessing about required fields. It also doesn't mention whether the tool returns a video, image, or other content, or how the generational process works (e.g., synchronous vs async). More per-skill guidance or examples are needed.

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 0%, so the description must compensate. It does provide the canonical list of valid values for the 'skill' parameter (acting as an enum) and clarifies that 'params' must be a JSON string. However, it omits the structure or keys expected within the params JSON for each skill, which is critical for correct invocation.

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 clearly states the tool's purpose: generate content using a Pika creative skill. It lists all valid skill names, which both specifies the resource and distinguishes this generic tool from the specialized sibling tools (e.g., pika_build_brand, pika_app_sizzle). The verb 'generate' is specific and action-oriented.

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?

Usage is implied: the user must choose a skill from the listed set and pass params as a JSON string. However, there is no explicit guidance on when to use this generic tool versus the specialized sibling tools, nor any mention of prerequisites (e.g., calling pika_skills first) or exclusions.

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