vk_post_auth_2af0c2402604

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

No annotations are provided, so the description carries the full burden. It discloses that this is a raw REST proxy, that auth is not required, and that it yields a JWT token. However, it says the body field is 'optional' while the schema requires it, which is misleading. It also does not mention error behavior or response structure beyond the token.

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 concise, front-loaded with the primary purpose, and each sentence adds useful context: the flow, parameter passing conventions, and auth requirement. No wasted words.

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 simple auth callback with no output schema and no annotations, the description covers the key aspects: purpose, trigger condition, parameter handling, and auth requirement. It falls short on response details and error handling, but the core usage is well-specified. The optional/required body mismatch is a minor gap.

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 coverage is 100%, so baseline is 3. The description adds value by clarifying path/query parameters are top-level fields and that camelCase/snake_case aliases are accepted. It also indicates the body field carries the JSON payload, though it incorrectly calls it optional.

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 clearly states the tool authenticates a user via OpenID Connect and obtains a JWT token, distinguishing it from sibling login/register/social auth tools. It uses specific verbs ('Authenticate', 'obtain') and names the resource (OpenID Connect callback).

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 provides clear context for when to use this tool: after a redirect from the OpenID Connect provider with an authentication code. It explains the flow and that authentication is not required, but does not explicitly exclude alternative tools or state when not to use it.

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