get_subreddit_activity_pattern

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

With readOnlyHint=true already indicating a safe read operation, the description adds useful behavioral context by naming the exact data sources: /new for posting volume and this week's /top for winning posts. This clarifies what the output is derived from and the time window, going beyond the bare annotation.

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, tightly packed sentence with no filler. The main idea is front-loaded and the data-source qualifiers are presented clearly in a compact format.

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?

The description is adequate for understanding the core output, especially since an output schema exists and the annotation declares read-only behavior. However, it omits parameter semantics and usage guidance, which are needed for correct invocation in edge cases involving timezone and the optional account parameter.

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 0%, so the description carries the burden of explaining parameters, but it only references 'a subreddit' generically. It does not clarify that timezone_name affects hourly bucketing or what the optional account parameter does, leaving the agent reliant on parameter names alone.

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 indicates the tool reports when a subreddit is most active, including posting volume by hour and timing of top posts. It lacks an explicit verb like 'gets' or 'returns', and it does not differentiate itself from siblings such as get_post_timing_data, but the core purpose is unmistakable.

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 implies the tool is used to analyze subreddit activity patterns, but it provides no explicit guidance on when to choose this tool over alternatives like get_post_timing_data or get_account_stats. No exclusions or 'use instead' conditions are stated.

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