Fetch a public IMBA Agent URL

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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds the context that this only works on allowlisted URLs (an access constraint) and states it never performs write operations, which is a meaningful behavioral detail beyond the annotations.

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 concise sentences: the first states the operation and scope, the second clarifies what it does not do. Every sentence earns its place and there is zero wasted text.

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 single-parameter, read-only tool with full schema coverage and non-destructive annotations, the description is sufficient. It could mention what the response contains, but given the output schema is absent and the tool is a simple docs fetcher, the description is complete enough for an agent to select and invoke it 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 description coverage is 100%, with a detailed description of the 'url' parameter specifying the required format (absolute https://imbawallet.com URL) and the allowed categories (HowTo, use cases, tiers, well-known, openapi discovery, llms-agent). The description reinforces the allowlist constraint, which is a helpful abstract of the parameter's value domain, but the parameter is well documented in the schema even without it.

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 states a specific verb ('HTTP GET') and a specific resource ('allowlisted public docs URL'), and differentiates from siblings by explicitly noting it 'Never calls register/deposit/buy'. This makes it clear what the tool does and sets it apart from other tools that perform write actions.

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 description explicitly states when to use this tool—to fetch a public docs URL from the allowlist—and implicitly specifies the alternative (other tools that call register/deposit/buy) by saying it never calls these actions. It gives clear context without requiring additional inference.

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