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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=true. The description adds context the annotations cannot: planning is free, nothing is posted, and content creation/publishing is a separate downstream step. This resolves the ambiguity of a tool named 'generate' that in fact writes nothing.

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?

Four sentences, front-loaded with the core action and output before the usage condition and the free/signup caveat. Every sentence carries information, though the closing clause about signup and publishing is slightly dense.

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?

No output schema exists, so the description compensates by describing the return ('a business summary plus a plan of reel, video, and image ideas'). With one fully-documented parameter and clear side-effect boundaries, an agent has everything needed to call it correctly.

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% for the single website_url parameter, so the schema already carries the format and example. The description reinforces that the URL must be the business's own site, but adds no syntax or constraint beyond that, which is the expected baseline.

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?

States a specific verb and resource with scope: 'Build a free 7 day social media content plan for a local business from its website.' It also names the mechanism (reads the site, learns offerings) and the output (business summary plus reel/video/image ideas), which cleanly separates it from get_industry_examples and get_signup_link.

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?

Gives an explicit trigger: 'Use this when a business owner wants content ideas or a posting plan and can share their website address.' It also clarifies the boundary that making/publishing happens 'after a free signup,' implicitly routing to get_signup_link, but it never names that sibling outright.

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