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

With no annotations, the description carries the full burden and does well: it discloses data source (GeckoTerminal), that risk checks happen at request time, that results are heuristics rather than an audit, and the $0.02 cost. It does not explicitly state that the operation is read-only or describe rate limiting/pagination, which keeps it short of a 5.

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 dense but front-loaded: purpose and scope come first, then risk-check details per chain, then shared flags, metrics, data source, caveat, and cost. Every sentence adds useful decision-relevant information with no filler.

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?

Given no output schema, no annotations, and 0% parameter coverage, the description is substantially complete: it explains what is returned, the data source, the heuristic caveat, and cost. It is missing explicit read-only confirmation, the 'all' chain value, and any hint about output shape or pagination, but those are relatively minor.

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%, so the description must compensate. It explains the limit cap ('up to 20 per chain') and the chain scope by naming Base, BNB Chain and Solana, but it never documents the accepted 'all' value or clarifies that 'bsc' is the schema value for BNB Chain, leaving a meaningful gap.

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 resource and scope: newest token launches across Base, BNB Chain and Solana, up to 20 per chain, risk-checked. This implicitly distinguishes it from the per-chain siblings (base_launch_feed, bsc_launch_feed, solana_launch_feed), but it never names them or explicitly frames itself as the aggregate alternative.

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 multi-chain scope and the cost disclosure, but there is no explicit when-to-use or when-not-to-use guidance, and the per-chain sibling tools are never mentioned as alternatives. An agent must infer that this tool is the cross-chain option.

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