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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false and destructiveHint=false, so 'Read-only' in the description is largely redundant. Beyond annotations, it does add useful behavior: results are ordered newest first and each event carries a transaction hash. It still omits what 'recent' means, whether results are truncated by the limit, and whether a token filter narrows the event stream.

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?

One dense, front-loaded sentence with no wasted clauses; the event list, ordering, and per-item payload are packed efficiently. The trailing 'Read-only' repeats the annotation and earns little, and the sentence is a fragment with no verb, but overall it is tight.

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?

With no output schema and 0% schema description coverage, the description carries the full documentation burden for two parameters and the return shape. It partially covers the return shape (event types, transaction hash, ordering) but leaves the token filter entirely unexplained and gives no sense of the recency window or pagination, which is a material gap for a listing tool.

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 both parameters (limit, token) are undocumented in the schema and the description must compensate. It does not: it never mentions that a token can be supplied to scope events to one asset, nor what limit does or its 1-50 range and default of 20. Only the vague word 'Recent' gestures at result volume.

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?

The description names a specific resource (protocol events) and enumerates the event kinds it returns: listings, fills, exercises, expiries, cancellations, fee splits, burns, staking. It also states ordering (newest first) and per-item content (transaction hash), so an agent knows exactly what kind of data comes back. It does not explicitly distinguish itself from siblings like get_protocol_stats, which keeps it out of 5 territory.

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?

There is no when-to-use or when-not-to-use guidance. The word 'Recent' implies a recency window, but the definition never says how far back it looks, nor when an agent should pick this over get_protocol_stats, get_positions, or get_chart. No alternatives or exclusions are named.

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