start_oauth_flow

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

Discloses that it returns a URL and requires user interaction. No annotations are present, so the description carries the full burden; it is sufficient for a simple trigger action but could mention side effects like session creation.

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, front-loaded with action and result, no unnecessary 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?

Covers the basic purpose and outcome but omits parameter meaning and potential error scenarios. Adequate for a simple tool but could be more informative.

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 sole required parameter 'identifier' lacks schema description (0% coverage) and the description does not explain what it represents (e.g., handle, DID). Agent cannot infer correct value.

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?

Clearly states it starts an OAuth authorization flow for AT Protocol authentication, returning an authorization URL. Distinct from sibling OAuth tools (callback, revoke, refresh).

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?

Mentions that no authentication is required, indicating it's the first step. Does not explicitly list when not to use or reference alternatives, but context is clear.

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