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

Beyond the annotations, the description discloses the crucial workflow trait: the user signs and pays the fee from their own wallet at the returned link, and this tool performs no deployment or spending. That resolves the apparent tension with readOnlyHint=false and destructiveHint=false. It does not state whether a plan record persists, expires, or how long the link is valid.

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?

Two tight sentences with the core action front-loaded and the safety constraint immediately after. Nothing is wasted and no sentence is redundant.

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 an 11-parameter mutate-ish tool with no output schema and no schema descriptions, the definition is far from complete: the agent has no idea what markets/weights must contain or how dev_buy interacts with the launch. The behavioral framing is good but the invocation surface is essentially undocumented.

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?

With 11 parameters and 0% schema description coverage, the description carries the full burden but says nothing about any of them — markets, weights, dev_buy, fee_wallet, image_url, socials are all unexplained. 'Launch fee' is the only faint connection to fee_wallet, so it adds almost no semantic value.

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 ('Validate a new coin and return a launch link'), which clearly separates it from siblings like get_coin, list_coins and launch_status. It does not name an alternative tool explicitly, so it falls just short of a 5.

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 by the domain verb 'plan/launch' and the sentence clarifies the tool never deploys or spends, which sets expectations about a non-committal step. There is no explicit when-to-use, prerequisite, or sibling routing guidance (e.g., versus launch_status or claimable_fees).

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