HubSpot LLM Tools— Integrate your Agent with HubSpot in Minutes

Knit’s HubSpot LLM tools give your AI agents instant, code-free access to every HubSpot API endpoint—read, write, and automate without OAuth headaches or custom endpoints.

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LLM Tools In Action

Watch an agent automate workflows—all with Knit’s plug-and-play toolkit.

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Why Builders Pick Knit for Production-Grade LLM Tools

Full-coverage APIs, friction-free auth, and a framework-agnostic SDK—everything you need to ship smarter HubSpot automations fast.

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100% HubSpot API Coverage

With Knit's toolkit, every API endpoint comes pre-wrapped, enabling your agents to perform any task a human user can.

150+ Cross-App Integrations

Need more than HubSpot? The same SDK unlocks calendars, ticketing tools, and 150+ other SaaS apps for end-to-end workflows.

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Framework-Agnostic by Design

Works out-of-the-box with LangChain, LangGraph, and OpenAI—plus Claude and CrewAI support coming soon.

Higher-Precision Prompts

Knit ships with human-readable, LLM-tuned tool descriptions so your agent always picks the right action, reducing hallucinations and retries.

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Zero-Hassle Auth

OAuth handshakes, token refreshes, and secure credential storage are handled behind the scenes. You focus on features, not refresh tokens.

LLM-Native Toolkits

Each action is exposed as a ready-to-call function for OpenAI Functions, LangChain Tools, and more. Your model “thinks” the action, Knit executes it.

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Actions available via

HubSpot

LLM Tools

  • Unified Action

Delete CRM Custom Object Schema

This API endpoint deletes a CRM custom object schema identified by the provided schemaId. It requires the schemaId to be specified in the request body. The request must include headers specifying 'accept' and 'content-type' as 'application/json'. On success, it returns a response with 'success' set to true and 'data' as null. If an error occurs, 'success' is false and an 'error' object with a descriptive message is returned.

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  • Unified Action

Delete CRM Contact

The Delete CRM Contact API allows users to delete a contact from the CRM system. It requires a POST request to the endpoint with a JSON body containing the 'contactId' of the contact to be deleted. The request headers must include 'accept' and 'content-type' set to 'application/json'. On success, the API returns a JSON response with 'success' set to true and 'data' as null. If an error occurs, 'success' is false and an 'error' object with a descriptive message is returned.

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  • Unified Action

Update CRM Custom Object Fields

This API endpoint allows updating fields of custom objects in a CRM system. It requires a POST request to the specified URL with headers 'accept' and 'content-type' set to 'application/json'. The request body must include 'schemaId', 'fieldId', 'title', and 'type' to specify the field to be updated and its new attributes. The response will indicate success with a boolean 'success' field and may include additional data or error information.

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  • Unified Action

Update CRM Engagement

The Update CRM Engagement API allows users to update details of an existing CRM engagement. The API requires a POST request to the specified endpoint with headers 'accept' and 'content-type' set to 'application/json'. The request body must include the 'engagementId' as a required field, along with optional fields such as 'type', 'subject', 'direction', 'content', 'owner', 'startDateTime', 'endDateTime', and 'channel'. The response will indicate success with a boolean 'success' field and may include an error message if the operation fails.

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  • Unified Action

Update CRM Lead

The Update CRM Lead API allows users to update the details of a lead in the CRM system. The API requires a POST request to the specified endpoint with headers indicating the content type as application/json. The request body must include the leadId, which is mandatory, and can optionally include other details such as firstName, lastName, jobTitle, company, description, owner information, industry, number of employees, and address details. The response will indicate success or failure of the operation, with a success flag and optional data or error message.

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  • Unified Action

Get CRM Custom Objects Schemas

This API endpoint retrieves the schemas of custom objects in the CRM. It requires an 'accept' header with the value 'application/json'. The response includes a success flag and a data object containing an array of schema objects. Each schema object includes details such as schemaId, createdAt, updatedAt, title, titlePluralized, description, createdById, and updatedById. In case of an error, the response includes a success flag set to false and an error object with a descriptive message.

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