mixpanel_track_event

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

With no annotations, the description carries the full burden for behavioral disclosure. It merely restates the action ('track a custom event') without explaining side effects (e.g., immediate ingestion, asynchronous processing), required permissions beyond the schema, or rate limits. This is only slightly better than a tautology.

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 of 6 words, which is very concise. It front-loads the core purpose. While it could include more detail, for conciseness it is efficient and not 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?

For a tool with 7 parameters (5 required) and no output schema, the description is too minimal. It does not explain expected outcomes, error scenarios, or any constraints. The rich schema partially compensates, but the description fails to provide the operational context needed for complex tools.

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 100%, so the schema already documents all parameters. The description adds no extra meaning about how parameters interact, default values, or usage patterns. It meets the baseline of 3 but does not enhance understanding beyond 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 states 'Track a custom event in Mixpanel', which clearly indicates the tool's action (tracking) and resource (custom event in Mixpanel). It distinguishes from sibling Mixpanel tools that query data (e.g., mixpanel_get_events) by using the verb 'track', but does not explicitly differentiate.

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. Given sibling tools like mixpanel_get_events, mixpanel_get_funnels, etc., explicit usage context would be beneficial. The one-sentence description lacks any when-to-use, when-not-to-use, or prerequisite information.

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