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crm_create_lead_property

Add custom fields to HubSpot CRM leads to track specific data points like contact preferences, lead sources, or qualification criteria.

Instructions

Create a new lead property

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYes
labelYes
typeYes
fieldTypeYes
groupNameYes
descriptionNo
optionsNo
displayOrderNo
hasUniqueValueNo
hiddenNo
formFieldNo
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states 'Create' which implies a write/mutation operation, but doesn't mention permissions required, whether the creation is irreversible, rate limits, or what happens on success/failure. This is a significant gap for a mutation tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise with a single sentence, 'Create a new lead property', which is front-loaded and wastes no words. While it may be too brief for the tool's complexity, it earns full marks for conciseness and structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (11 parameters, 5 required, no output schema, and no annotations), the description is incomplete. It doesn't explain the purpose beyond the basic action, lacks parameter guidance, and omits behavioral details needed for safe and effective use, making it inadequate for the context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema description coverage is 0%, meaning none of the 11 parameters have descriptions in the schema. The tool description provides no information about any parameters, their purposes, or how they interact (e.g., that 'type' and 'fieldType' must be compatible, or that 'options' is required for enumeration types). This fails to compensate for the lack of schema documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Create a new lead property' clearly states the action (create) and resource (lead property), which is adequate. However, it doesn't differentiate from sibling tools like 'crm_create_company_property' or 'crm_create_contact_property' that create similar properties for different CRM entities, leaving the scope somewhat vague.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing a lead first), when not to use it, or how it differs from other property-creation tools in the sibling list, such as 'crm_create_company_property' or 'crm_create_contact_property'.

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

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