reddit_subreddits_posts

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It only states that posts are 'normalized public posts from a combined multi-subreddit feed', omitting key behaviors such as pagination handling, limit clamping, sorting options, and subreddit count limits. These details are in the input schema but the description adds no additional behavioral context.

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 consists of two short, clear sentences with no redundancy. Every word contributes to defining the tool's function and output.

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?

Given 5 parameters, no output schema, and no annotations, the description is minimal. It does not explain the 'combined multi-subreddit feed' behavior or indicate required parameters. The schema fills most gaps, but the description could be more helpful for an agent to understand the tool's scope and constraints.

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 100%, so baseline is 3. The description does not add any meaning beyond what is already in the schema descriptions (e.g., subreddits format, pagination token). It merely restates the tool's general purpose.

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 uses a specific verb 'List' and clearly identifies the resource as 'Reddit multi-subreddit posts' with 'combined multi-subreddit feed'. It effectively distinguishes from siblings like 'reddit_subreddit_posts' (single subreddit) and 'reddit_domain_posts' (domain-based).

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 usage for fetching posts from multiple subreddits simultaneously but provides no explicit guidance on when to use this tool versus alternatives like 'reddit_subreddit_posts' or 'reddit_search'. No when-not or alternative recommendations are given.

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