get_message_from_url

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

The description adds behavioral context by mentioning the return type and specific fields (post_no, text, sender, timestamp). However, there are no annotations, and the description does not disclose auth needs, rate limits, or side effects. It implies a read operation but doesn't state it explicitly.

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 concise, using a clear docstring format with only necessary information. No superfluous words.

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?

With only one parameter and an output schema, the description is fairly complete. It explains the tool's purpose, the input format, and the return structure. Minor gap: no mention of error handling or authentication requirements.

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 provides detailed semantics for the 'url' parameter, including an example and format, which adds significant value beyond the schema's type definition.

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 tool gets a specific message from a pararam.io URL, with a specific verb and resource. It distinguishes from sibling tools like get_chat_messages by the unique URL-based input.

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 provides an example URL but does not explicitly state when to use this tool versus alternatives like get_chat_messages or search_messages. No when-not or alternative guidance is given.

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