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nubiia-dev

@iamsamuelfraga/mcp-hubspot

by nubiia-dev

hubspot_crm_create

Create a new HubSpot CRM record for sales or engagement objects. Supports required fields and optional inline associations, returning the new record's ID.

Instructions

Create a new HubSpot CRM record (deal, line item, product, quote, call, meeting, task, note, or email engagement). Required properties vary by type — for engagements, hs_timestamp (epoch ms string) is mandatory. For deals, dealname is required. For tasks, hs_task_subject is required. Optionally associate the new record to existing objects inline via the associations parameter (avoids a separate association API call). Returns the created record with its HubSpot-assigned id.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
objectTypeYesCRM object type. Sales objects: deals, line_items, products, quotes. Engagement objects: calls, meetings, tasks, notes, emails.
propertiesYesKey-value map of property names to string values. All HubSpot property values are strings. For engagements, `hs_timestamp` is REQUIRED (epoch ms string or ISO 8601). Custom properties are accepted in addition to standard ones.
associationsNoOptional associations to create atomically with this object. Use this to link a new deal to existing contacts in a single API call.
Behavior3/5

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

Annotations are absent, so the description must carry full burden. It mentions creation, return of the created record with id, and required properties per type. However, it omits error scenarios, permissions, or side effects like idempotency.

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 three sentences, front-loaded with the core action, and efficiently covers required property variations and the associations option without redundancy.

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

Completeness4/5

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

Given no output schema and no annotations, the description adequately covers the tool's purpose, parameter requirements, and return value. It could be improved by mentioning error handling or limitations, but it is sufficient for basic use.

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

Parameters4/5

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

The input schema already covers all parameters (100% coverage). The description adds value by highlighting the benefit of the `associations` parameter to avoid extra API calls, though it does not introduce new semantic details beyond the schema.

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

Purpose5/5

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

The description clearly states it creates a new HubSpot CRM record and lists all supported object types. It distinguishes itself from sibling CRUD tools (e.g., batch create, update, get) by focusing on single-record creation and inline associations.

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

Usage Guidelines3/5

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

The description provides context on when to use the `associations` parameter to avoid separate API calls, but does not explicitly contrast with batch creation or other alternatives. It implies single-record creation but lacks clear 'when not to use' guidance.

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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