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

With no annotations, the description carries the full behavioral burden and delivers the highest-value facts: no on-chain side effects, a 24-hour draft expiry, and a hard input rule (image_url is refused, no URL fetching, image must be square and under 1 MB). Auth requirements, fees, and whether repeat calls create duplicate drafts are not addressed, so it is strong but not exhaustive.

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?

Front-loads the purpose and the no-on-chain guarantee, then uses a compact bullet-style block for the two parameters that most need examples, and closes with return values. Every sentence earns its place; the reward_levels example is dense but justified for a free-form nested array.

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 15-parameter tool with zero schema coverage and no annotations, the description leaves most configuration surface (hold_minutes, callers_share_pct, first_buy_sol, fomo_bonus/bonus_every) unexplained, so an agent cannot set sensible values. It does cover returns (signing_url, draft_id) and expiry, which is why it is not a 1, but it is not adequate to the 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% across 15 parameters, so the description must compensate and largely does not. It explains reward_levels (with a concrete example) and image_base64 plus the image_url refusal, but leaves name, symbol, twitter, website, telegram, description, fomo_bonus, bonus_every, hold_minutes, first_buy_sol, callers_share_pct and minimum_position_usd completely undefined.

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 ('Prepare a token launch') and immediately scopes it with 'Nothing is created on-chain', which distinguishes it from the on-chain sibling prepare_launch_transactions that it also names. An agent can tell what it produces (a draft) without opening the schema, though the relationship to get_launch_status/get_launch_options is left implicit.

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 a clear routing rule: humans get a signing_url to review and sign on paid2call.com, agents with their own wallet should look at prepare_launch_transactions. That is real when-to-use guidance tied to an alternative. It stops short of stating when-not-to-use (e.g. no draft needed if the launch already exists), so it is not a full 5.

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