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

With no annotations, the description carries the full burden and delivers: a 24h window, immutability of the history, a no-advice content policy, a rate limit (3 calls/hour/IP shared with the website), and a paid x402 tier at $0.030/call. That is exactly the operational context an agent needs before calling.

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-loaded with purpose and scope, then polling, then constraints and pricing. Dense but every clause carries signal; the final sentence packs rate limit, cost, and endpoint into one long line, which slightly hurts scanability.

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, and the description compensates by naming the creator-context fields (who deployed, prior launch count, self-buying of the bonding curve). Combined with the disclosed rate limits, cost, and polling model, an agent has everything needed to call this 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%, with 'only', 'limit' and 'since' fully documented including the enum meanings and the next_since polling pattern, so the baseline is 3. The description's only addition is the '?since=' polling hint, which the schema already covers.

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+resource+scope: a live feed of pump.fun launches from the last 24h, enriched with creator context. It distinguishes itself from siblings like 'launch' (singular) and 'deployer' by framing itself as a time-bounded feed rather than a lookup.

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 clear usage context: use it as a live feed, and 'Poll with ?since= for only what is new' tells the agent how to consume it incrementally. 'This history cannot be reconstructed afterwards' implies timeliness pressure. It never names an alternative sibling (e.g. 'launch' for a single record) or states when not to use it, so it stops short of a 5.

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