Get Bifrost quota snapshot

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

With no annotations, the description carries the full burden. It discloses that the tool calls a configured endpoint, uses the caller's Authorization header when present, and falls back to explicit virtual_key/x-bf-vk/BIFROST_VIRTUAL_KEY in non-production environments. It stops short of describing precedence, error behavior, or rate limits, but the core behavioral profile is visible.

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 one dense sentence that front-loads the core behavior and then adds only relevant auth context. Every clause earns its place, and there is no filler or repetition of the title or schema.

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 tool with two optional parameters and an output schema, the description covers the main behavior and authentication fallback well. However, api_base_url is left completely unexplained, and the precedence between Authorization header and virtual_key is not stated. These are clear gaps for an agent trying to call the tool correctly in edge cases.

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 the description must compensate. It does explain virtual_key as an explicit fallback credential, but it never mentions api_base_url or how it relates to the 'configured quota endpoint.' The agent is left to guess whether api_base_url overrides configuration, which is a significant semantic gap.

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 and resource: 'Return the caller's Bifrost quota snapshot by calling the configured quota endpoint.' It clarifies that the result is caller-specific and not a global quota, going well beyond the title. Even without sibling tools, an agent knows exactly what operation this performs.

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 gives clear context for how authentication works: it uses the caller's Authorization header when present, with virtual keys available 'for local and non-production fallback use.' It does not explicitly list when not to use the tool or mention alternatives, but with no siblings and a clear read-only purpose, the usage context is strong.

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