Blockchain hackathons

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and external-source behavior are covered. The description adds genuine context by naming the upstream feeds (Devpost, ETHGlobal) and the freshness/scope filter, but says nothing about return volume, ordering, or link formats.

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?

A single front-loaded clause with zero filler; the resource leads, and provenance trails it. Nothing could be cut without losing information.

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 parameters and no output schema, the description is nearly sufficient: it establishes subject, provenance, and subset. It stops short of hinting what each hackathon entry contains (name, dates, link), which would help since no output schema exists.

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?

The tool takes no parameters, so the baseline is 4. There is nothing for the description to disambiguate on the input side, and the schema is trivially complete.

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?

It names a specific resource (blockchain hackathons), its sources (Devpost, ETHGlobal) and the subset returned (open and upcoming), so the agent knows exactly what this returns. It does not explicitly distinguish itself from near-neighbors like list_events or list_grants, leaving the reader to infer 'hackathons' as the differentiator.

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 only implied by the resource and scope ('open and upcoming') – there is no explicit when-to-use statement and no mention of alternatives such as list_events or list_grants. For a zero-parameter listing tool this is largely self-evident, but the description adds no routing guidance.

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