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

Annotations declare readOnlyHint=false, openWorldHint=true, destructiveHint=false, so the safety profile is partly covered. The description adds a meaningful constraint ('Never accepts an nsec'), which is valuable security context. It doesn't explain what the caller does with the returned URI, TTL, or relay behavior, leaving moderate gaps.

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 key action and the security caveat. Efficient with no wasted wording.

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 an advanced pairing tool with no output schema and no annotations covering the URI format, the description should mention what the caller receives and any relay/timeout behavior. The 'Never accepts an nsec' note is useful but the overall picture is incomplete for a pairing flow.

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 0% and the single parameter 'relays' is undocumented in both the schema and the description. The description could have clarified the optional relay list format and limits, but the tool has only one optional parameter, so the baseline for limited-parameter tools keeps this at a middle score.

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+resource: creates a nostrconnect:// URI for the user to scan or open in a remote signer. The 'Advanced fallback' framing helps distinguish it from the more typical sibling tools like connect_bunker. However, it doesn't explicitly name which sibling to use instead in the normal case.

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?

Labeling it an 'Advanced fallback' implies it's not the default path and should be used when other pairing methods fail, but it doesn't name the alternative (e.g., connect_bunker) or state the condition that triggers fallback. Usage context is implied rather than explicit.

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