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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description adds useful value by enumerating returned content (signals with source and date, fit reasons, research status, personalised lines), but it says nothing about whether some leads are locked or require an unlock step, despite the sibling unlock_intent_leads implying that constraint.

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 with no padding, and the key scoping word 'One' appears immediately. It is a fragment rather than a full sentence, which slightly weakens readability but not efficiency.

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?

With no output schema and low parameter coverage, the description carries the full burden, and it does list the main returned fields, which is helpful. It omits return format specifics, error behavior for an invalid or locked lead_id, and any relationship to unlock_intent_leads.

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 must carry the burden for lead_id, and it does not mention the parameter at all. Given there is exactly one required, self-evidently named identifier, the practical risk is low, but no added semantics (format, source of the ID, unlock state) are provided.

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 phrase 'One Intent person or company' states a specific resource and singular scope, which distinguishes it from the sibling list_intent_leads. However, it never names the verb or explicitly contrasts itself with sibling tools like get_intent_results or list_intent_leads, leaving differentiation to the agent's inference.

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?

There is no when-to-use guidance, no mention of prerequisites, and no pointer to alternatives such as list_intent_leads for enumeration. The agent must infer usage purely from the name and the word 'One'.

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