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

Annotations declare readOnlyHint=false, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description usefully elaborates what needs_verification captures (CAPTCHA, MFA, email verification, rate limits, ambiguity), but says nothing about what record is created/updated or overwrite behavior.

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 compact sentences with no waste, and the status clarification is front-loaded after the core action. Appropriately sized, though not maximally information-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?

For a 6-parameter mutation tool with no output schema and 0% parameter documentation, the description is thin. An agent still lacks guidance on the purpose of externalUrl/externalReference/message and the result of the write.

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 6 parameters, so the description carries the burden. It only clarifies the needs_verification status value; jobId, projectId, message, externalUrl, and externalReference are all left undefined.

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 the verb ('record') and a general resource ('the result of a user-approved browser interaction'), which conveys the mutation intent. However, it never ties the action to backlink submissions, and the sibling create_backlink_submission / preflight_backlink_submission boundary is left unclear.

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 'user-approved browser interaction' phrase hints at context but there is no explicit when-to-use, when-not, or statement of how this differs from create_backlink_submission or get_backlink_submission.

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