System Overview

Mixbound Microservice: HubSpot Line Items

Purpose

A HubSpot automation microservice that performs controlled, auditable line-item operations across HubSpot Deals (which sync to Salesforce Opportunities), including duplication, cross-deal copying, renewal generation, and admin-approved transformations (discount rules, SKU mapping, recurring flags, rounding); all exposed via a safe, UI-less API surface triggered by HubSpot workflows and webhooks.

Target Audience

RevOps / SalesOps / GTM Engineering teams managing HubSpot as a primary sales workspace with Salesforce as the downstream system of record for Opportunities.

Approach: Every operation is idempotent, auditable, and supports dry-run mode. The system enforces strict token verification, least-privilege scoping, and safe partial-success semantics.

Important

This service operates exclusively in HubSpot. It does not modify Salesforce or any other integrated CRM directly. Downstream sync to Salesforce Opportunities follows existing HubSpot-Salesforce integration rules.

Core Capabilities

Duplicate Line Items

Clone line items within the same deal with optional quantity/price adjustments

Cross-Deal Copy

Copy line items from one source deal to one or more target deals

Transformation Rules

Apply discount policies, rounding rules, SKU mapping, and recurring flags during copy operations

Timed Renewals

Create renewal deals N days before close/renewal date with configurable carry-over policies

Idempotency & Audit

Every operation keyed by idempotencyKey with full audit trail including actor, transforms applied, and timestamps

Safe API Surface

UI-less REST endpoints triggered by HubSpot workflows, webhooks, or scheduled jobs with partial-success semantics

REST API Surface

POST /line-items/duplicate Duplicate line items within a deal
POST /line-items/copy Copy line items to target deal(s)
POST /line-items/copy/transform Copy with transformation rules
POST /renewals/schedule Schedule a timed renewal creation
POST /renewals/run Execute pending renewal jobs
GET /ops/{operation_id} Retrieve operation audit record
GET /health Health check endpoint

Technology Stack

Node.js 18+ HubSpot API v3/v4 Private App Token Auth REST / JSON Idempotent Operations