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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false and openWorldHint=true, so the safety and idempotency profile is covered structurally. The description adds that the resulting link is queryable via deep_extraction and that only URL-based links are created, which is useful context. It stops short of stating auth requirements, default enablement state, or behavior on duplicate/invalid URLs.

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 prose sentences up front, then a compact Args list — no filler or restated schema titles. The opening sentence is slightly dense with the cross-reference to deep_extraction, but nothing is wasted.

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-value documentation is not required. For a five-parameter mutation tool the description covers scope, channel limitation, and the non-obvious parameter formats. Remaining gaps — auth requirements, default enabled state, duplicate-URL behavior — are real but modest against what annotations and the output schema already supply.

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%, so the description carries the full parameter burden and does it reasonably well: expire_date is documented with ISO 8601 format and a concrete example, and the allow/block lists are documented as comma-separated IPs/CIDRs. name and original_url get only terse glosses, and the interaction between allow and block lists (if both are supplied) is unaddressed.

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 — creating an extraction-query link — and names the target consumer (deep_extraction). It also clarifies the creation channel (URL-based only), which implicitly separates it from the file-upload path. Sibling differentiation within the tool set is only implicit, since it never contrasts with update_link/delete_link/get_link directly.

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?

Explicitly bounds usage: 'creates URL-based links only' and routes the file case to the web UI or HTTP API. That is a clear when-not statement with an alternative path. It does not, however, cover prerequisites such as whether the URL must be publicly reachable or what happens if the link already exists.

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