stream_summary

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

With no annotations, the description bears full burden. It honestly discloses that the `seconds` window is not yet functional and that the tool returns a live reading. This is good but does not cover other behavioral aspects like whether it is read-only or requires authentication.

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?

Two sentences with no wasted words. The key information (snapshot, live reading, future seconds) is front-loaded. Highly efficient.

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 simple tool with one parameter and no output schema, the description explains the current behavior and the future intent of the parameter. However, it lacks details on the output format or what a 'brain-state snapshot' constitutes, which may be insufficient for an agent to fully understand the tool's return value.

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%, but the description indirectly explains the `seconds` parameter by stating it is intended for rolling stats in a future phase. This adds context beyond the schema, though it does not fully describe the parameter's current behavior or valid range.

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 it returns a 'current brain-state snapshot' and 'live reading', which clearly identifies the tool's purpose. However, it does not explicitly distinguish from sibling tools like 'get_brain_state', though the snapshot term implies a different level of detail.

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 explicit guidance on when to use this tool versus alternatives. The note about the `seconds` parameter being for a future phase implies that for rolling stats one should wait, but no alternative tool is mentioned.

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