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

With no annotations, the description carries the full burden and does substantial work: it discloses that output is base64 and unsigned, that submission order matters, that each transaction must confirm before proceeding, and that the wallet pays network fees plus the first buy. Missing only edge behaviors such as expiry of the challenge, retry semantics, or what happens if a transaction fails mid-sequence.

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?

Three short blocks, front-loaded with the purpose, then prerequisites, then return/sequencing behavior. Every sentence carries information; formatting is dense but readable rather than padded.

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 4-parameter mutation-adjacent tool with no annotations and no output schema, the description covers purpose, prerequisite auth material, return shape, ordering requirements, and fee responsibility. It stops short of describing multi-transaction failure handling, which is the main remaining gap.

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%, so the description must compensate. It explains wallet (the agent's own wallet), and the provenance/meaning of challenge and signature via get_signing_message(action="launch"), and hints that draft_id references an existing draft. It offers no format detail for draft_id or challenge/signature, leaving half the parameters only partially grounded.

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: 'build the launch transactions from a draft', and scopes the audience to agents holding their own Solana wallet. That framing implicitly separates it from prepare_claim_transaction and prepare_launch_transactions-adjacent siblings, though it never names an alternative explicitly.

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 the prerequisite chain ('challenge/signature: from get_signing_message(action="launch") signed by wallet') and the follow-up step ('submit IN ORDER with submit_signed_transaction, waiting for each to confirm'). This is clear operational context, but there is no explicit when-not-to-use or failure/branch guidance.

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