active_now

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

There are no annotations, so the description carries the full burden for behavioral disclosure. It only lists content categories and does not mention return format, refresh semantics, permissions, side effects, or data source. All behavioral traits must be inferred from the tool name and content list.

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 front-loaded noun phrase with no filler words, making it very compact. However, the absence of a main verb makes it slightly less effective as a complete tool description.

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 zero-parameter tool with an output schema, listing the three content areas is minimally adequate. But without annotations or usage guidance, the description leaves behavioral and contextual details unstated and does not resolve overlap with sibling 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?

The tool has zero parameters, so there are no parameter semantics to document. The baseline of 4 applies because no parameter information is needed.

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 identifies the three data areas returned: current presence, latest focus app, and open agent sessions. It lacks a main verb, making it a noun phrase rather than an explicit action statement, but the intent is readable. It does not explicitly differentiate from sibling tools that cover subsets of this data.

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?

No guidance is provided about when to use this tool versus alternatives. Sibling names like sense_status, what_was_i_doing, and agent_sessions suggest overlapping functionality, but the description offers no exclusion or preference cues.

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