Get Page Profile Picture

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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the description correctly aligns by stating 'Gets'. It adds that the return is a URL, but doesn't disclose potential issues like rate limits or required permissions. This is adequate given the annotations.

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 extremely concise with three brief sentences including the argument list. Every word adds value, no fluff, and the information is front-loaded.

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 states it returns a URL, which is the primary output. There is no output schema, so this is sufficient. It covers the core functionality, though additional details about the URL structure or error handling could be provided.

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 only 33% (only response_format has a description). The description adds descriptions for page_id and size, including the enum values and default for size, improving semantics. However, it omits description for response_format, which is covered in the schema.

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 the profile picture URL for a Facebook Page, using specific verb and resource. Among siblings like meta_get_page and meta_update_page_picture, it uniquely focuses on the profile picture retrieval.

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 when-to-use or when-not-to-use guidance is provided. However, the tool's function is straightforward (get a picture), so usage is implied. No alternatives or exclusions are mentioned.

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