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

Annotations only say readOnly=false, idempotent=false, destructive=false, openWorld=true; the description goes well beyond them by disclosing the critical one-time bearer token ('Save the bearer token securely; it is shown once'), the obligation to hand the claimUrl to a human, and the 30-day expiry of unclaimed accounts. These are exactly the non-obvious post-conditions an agent cannot infer from structured fields.

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?

Four short sentences, front-loaded with the action, then the two must-do post-conditions, then the expiry policy. Nothing is padded and each sentence carries operative information.

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?

With no output schema, the description usefully explains what the caller gets back and must do with it (token, claimUrl), which covers the return-value burden. But for a 3-parameter tool at 0% schema coverage it leaves the inputs — especially the required 'agent' and the 'purpose' enum — completely opaque.

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 three parameters, so the description carries the full burden — yet it never mentions 'agent', 'email', or 'purpose'. The enum values (mcp-directory, index, store) are left entirely unexplained, which is a meaningful gap for the only parameter with constrained values.

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 clear verb and resource ('Create an Appside account') and qualifies it with 'without a form', which signals this is the programmatic, agent-driven path. It's distinguishable from siblings like register_app or submit_mcp_server, though it never names an alternative explicitly.

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?

'Without a form' implies the condition that selects this tool over a human signup flow, and the post-call instructions imply the intended workflow. However, there is no explicit when-to-use/when-not guidance and no reference to the sibling tools (claim_mcp_listing, confirm_mcp_claim) that obviously follow this one.

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