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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is partly covered. The description adds the list of what is validated but says nothing about failure behavior, whether capacity is reserved, or what side effect justifies readOnlyHint=false — a meaningful gap given the preflight verb implies a pure read.

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?

A single front-loaded sentence that leads with the action and packs the six checks compactly. No filler; every clause is informative, though a six-item inline list is dense.

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?

There is no output schema, so the description needn't explain returns, but it also never says what a preflight result contains or how failures should be handled before retrying the submission. For a multi-param gating tool this leaves notable gaps.

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?

Three required parameters (projectId, siteId, sourceId) with 0% schema description coverage, and the description never mentions or explains any of them. The description does not compensate for the schema gap, leaving the agent to infer each identifier's role from name alone.

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 ('Check') and enumerates the exact resources/conditions being validated (paid access, profile confirmation, source policy, inventory, duplicates, daily capacity). The phrase 'before creating a submission job' implicitly positions it against create_backlink_submission and get_backlink_submission, though it never names the sibling 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?

The clause 'before creating a submission job' gives implied sequencing context, which is useful. However, it does not name create_backlink_submission, state whether this is mandatory or optional, or explain when to skip it — so usage is implied rather than directed.

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