Ecosystem pulse

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

Annotations already declare readOnlyHint and openWorldHint, so the agent knows this is a safe, externally-sourced read. The description adds the meaningful constraint that results are limited to named dependencies the project uses, which is real behavioral context. It says nothing about recency window, ranking, or how the ecosystem is resolved, so a 3 is appropriate with annotations carrying the safety profile.

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?

Two sentences, zero filler, and the scoping constraint is front-loaded before the usage trigger. Every sentence earns its place.

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 two-param, no-required-argument read tool with annotations covering safety and no output schema, the description is essentially complete. The only unaddressed item is how 'the project's ecosystem' is determined, which is 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 100%: limit and min_points are both documented with defaults in the schema. The description adds no parameter detail beyond that, so the baseline of 3 applies.

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 gives a specific verb+resource: it surfaces recent Hacker News discussions, filtered to dependencies or frameworks the project actually uses. That scoping constraint ('actually uses') is the distinguishing feature and is stated plainly. It stops short of naming which sibling to prefer for adjacent questions (e.g. what_should_i_know), so it is clear but not fully sibling-differentiated.

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?

It gives an explicit trigger: 'Call when the user asks what is new or being discussed in their ecosystem.' That is a clear use context. There is no when-not guidance or named alternative for overlapping questions like general project news, which keeps it below a 5.

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