heliusStreaming

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

With no annotations provided, the description alone must convey behavioral traits. It only states the tool's purpose but fails to disclose any side effects, authorization needs, rate limits, or whether actions are destructive. For a tool with CRUD and subscription actions, this lack of transparency is a significant gap.

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 short (two sentences) and front-loads purpose, but it is too terse for a tool with many parameters. While concise, it sacrifices necessary detail, making it only adequately structured.

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 the high parameter count, no output schema, and no annotations, the description is insufficient. It does not explain return values, parameter dependencies, or how actions relate to parameters, leaving major gaps for effective tool use.

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 only 13%, and the tool has 24 parameters. The description adds no parameter information, leaving the agent to guess the meaning and usage of parameters like 'args', 'action', 'detail', etc. This is a critical failure given the parameter complexity.

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 'Webhook CRUD and live subscription configuration' clearly identifies the tool's purpose as managing webhooks and subscriptions, distinguishing it from sibling tools like heliusAccount or heliusAsset. However, it could be more specific about the range of actions (e.g., CRUD and subscription types).

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?

The phrase 'Use for actual webhook/subscription setup, not how-to guides' gives minimal guidance on when to use the tool, implying it's for real configuration rather than educational purposes. No explicit alternatives or exclusions are mentioned, leaving the agent to infer context from sibling tool names.

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