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

No annotations exist, so the description carries the full burden. It usefully discloses that only public clients are supported, that no client secret is issued, and the redirect URI validation rules, but it omits whether registration requires authentication, what credentials are returned (client_id/registration access token), and whether registration is open or gated.

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 short sentences, front-loaded with the core action and followed by the key constraints. No filler or repetition.

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 13-parameter creation tool with no annotations, no output schema, and 0% schema description coverage, two sentences are not enough. Critical gaps remain around parameter meanings, required authentication, and the response payload the caller must handle.

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% across 13 parameters, so the description must compensate and largely does not. It adds meaning only for redirect_uris (https or loopback) and implicitly for token_endpoint_auth_method/grant_types (public clients, PKCE), leaving the other parameters undocumented anywhere.

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?

States a specific verb and resource ('Register an OAuth client') and pins it to RFC 7591 dynamic registration, which clearly separates it from the sibling authorization and token tools. An agent can identify the operation without inspecting the schema.

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 'Public clients only: PKCE, no secret' is an explicit applicability constraint that tells an agent not to use this for confidential clients, and the redirect rule sets a further precondition. It does not name an alternative tool or state when in the auth flow registration should occur, but the exclusions are clear.

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