get_post_details

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

No annotations are provided, so the description carries the full behavioral disclosure burden. 'Fetch' conveys a read-only operation and the return format is specified, but there is no mention of auth requirements, errors, rate limits, or other behavioral caveats. For a simple get-by-id tool, this is adequate but not rich.

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 compact and well-organized: a one-sentence purpose, an Args block, and a Returns block. Every sentence earns its place, and the core purpose appears first.

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 straightforward single-ID fetch with one required parameter and an output schema present, the description covers what the agent needs to invoke it correctly. Missing sibling differentiation and behavioral caveats are minor given the tool's low complexity.

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 must define the parameter. It does so with 'media_id: Unique Threads post/media ID,' adding a domain meaning that the schema alone lacks. A concrete example or format hint would make it stronger, but the single parameter is well explained.

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 states the verb and resource: 'Fetch detailed metadata for a single Threads post.' It also lists the returned fields, which clarifies scope. It does not explicitly differentiate from siblings, but 'single post' implicitly distinguishes it from list and analytics tools.

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?

Usage is implied: call this when you need detailed metadata for one post identified by media_id. However, no explicit guidance is given about when not to use it or when to prefer a sibling tool like get_post_analytics or fetch_post_replies.

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