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

With no annotations the description carries the full behavioral burden, and it delivers: statements are idempotent, a clean re-run is harmless, the breadcrumb is rewritten (a side effect), and the call is RESTRICTED to the operator via nsec-signed proof. That is well beyond anything in the structured fields. It stops at 4 because partial-failure semantics and what the breadcrumb actually is remain unexplained.

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 core action is front-loaded in the first sentence, followed by trigger, safety, output, and auth notes in a dense but ordered block. Almost every sentence adds information, though the undefined 'breadcrumb' reference recurs and reads as insider shorthand rather than earning its place for an outside agent.

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?

An output schema exists, so return values need not be spelled out (though the description helpfully previews 'one step per concern, with Neon's own error text inline'). Auth restrictions and idempotency are covered, leaving only the undocumented dpop_token as a real gap for a recovery tool of this complexity.

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 single parameter dpop_token has 0% schema description coverage, and the description never mentions it. The closest compensation is the generic 'requires proof (nsec-signed)' note, which hints at an auth artifact but does not map to the named token parameter or its format. For a 1-param tool, the description fails to close the coverage 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: 'Prepare this operator's database schema again,' framed as a schema re-provisioning step. The diagnostic framing ('when Neon keeps answering 4xx') further pins down intent, and no sibling tool does schema restoration, so it is distinguishable. It stops short of 5 because 'ignoring the breadcrumb' is undefined jargon that obscures the exact mechanism.

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?

It gives an explicit trigger condition ('when Neon keeps answering 4xx and the operator suspects a table or grant is missing') plus a safety assurance for re-running. It does not name any alternative recovery tool to compare against, but among the siblings none is a closer substitute, so the missing exclusion costs little.

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