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jonas construction

Jonas Construction API

Jonas Construction is construction ERP software used by contractors and service companies to run accounting, job cost, service dispatch/work orders, payroll/time, inventory, equipment, and project management. An unofficial API lets you programmatically pull customers and sites, servic

By Alex KlarfeldJanuary 25, 2026
Jonas Construction API

What is Jonas Construction?

Jonas Construction is an integrated construction management and service ERP for contractors. Teams use Jonas to manage accounting and job cost, dispatch technicians, handle work orders and service contracts, track inventory and equipment, run payroll and HR, and oversee project financials and WIP reporting.

Core product areas include:

  • Service Management (e.g., call taking, dispatch board, work orders, PM schedules, service agreements)
  • Job Cost & Financials (e.g., budgets, cost codes, progress billing, AP/AR, GL, WIP)
  • Field Operations (e.g., eMobile time entry, labor/material capture, equipment history)
  • Inventory & Equipment (e.g., items, stock levels, parts issues/returns, asset tracking)
  • Payroll & HR (e.g., timesheets, pay rules, overtime, certifications)
  • Document Management (e.g., attachments, photos, work order documents)

Common data entities:

  • Companies (customers), Contacts, and Site Locations
  • Service Work Orders (statuses, priorities, scheduled windows)
  • Technicians, Crews, Schedules, Timesheets
  • Jobs/Projects, Cost Codes, Budgets
  • Inventory Items, Material Lines, Equipment Assets
  • Service Contracts/Agreements and Preventive Maintenance tasks
  • Invoices, AP Bills, Purchase Orders

The Jonas Construction Integration Challenge

Contractors rely on Jonas daily, but turning portal-based workflows into API-driven automation is non-trivial:

  • Module-specific interfaces: Service Management, Job Cost, Inventory, and Payroll each have distinct workflows and entitlements
  • Enterprise security: SSO/MFA and strict role-based controls complicate headless automation
  • Deployment variability: Cloud-hosted and on-prem environments introduce network/session differences
  • Portal-first features: Dispatch boards, time capture, and billing screens are optimized for human interaction
  • Financial rigor: Cost codes, approvals, and auditability must be respected programmatically

How Supergood Creates Jonas APIs

Supergood reverse-engineers authenticated browser flows and network interactions to deliver a resilient API endpoint layer for your Jonas tenant.

  • Handles username/password, SSO/OAuth, and MFA (SMS, email, TOTP) securely
  • Maintains session continuity with automated refresh and change detection
  • Normalizes responses so you can integrate once and rely on consistent objects across modules
  • Aligns with customer entitlements and role-based permissions to ensure compliant access

Getting Started

  • Schedule Integration Assessment

Book a 30-minute session to confirm your modules, licensing, and authentication model.

  • Supergood Builds and Validates Your API

We deliver a hardened Jonas adapter tailored to your workflows and entitlements.

  • Deploy with Monitoring

Go live with continuous monitoring and automatic adjustments as Jonas evolves.

API Endpoints

Authentication

POST/sessions

Establish a session using credentials. Supergood manages MFA (SMS, email, TOTP) and SSO/OAuth when enabled. Returns a short-lived auth token maintained by the platform.

Authentication

POST/sessions/refresh

Refresh an existing token to keep sessions uninterrupted.

Customers

GET/customers

List customers with filters and summary details.

Service Work Orders

POST/service-work-orders

Create a new service work order with scheduling and assignment details.

Service Work Orders

PATCH/service-work-orders/{workOrderId}

Update status, scheduled window, or technician assignments.

Timesheets

POST/technicians/{technicianId}/timesheets

Create a timesheet entry against a work order and cost code.

Invoices

POST/service-work-orders/{workOrderId}/invoices

Create a service invoice from approved labor and materials.

Use Cases

Customer & Site Sync

- Mirror customers, site locations, and contacts into your internal systems - Keep addresses, service agreements, and equipment metadata current for routing and planning - Enrich CRM records with Jonas account identifiers for unified reporting

Work Order Lifecycle Automation

- Create work orders from your product (web, mobile, IoT alerts) with priorities and SLAs - Update statuses, scheduled windows, and technician assignments programmatically - Attach photos/documents and record labor/materials from the field

Dispatch & Scheduling Integration

- Push assignment changes from your scheduling or optimization engine - Track ball-in-court (dispatcher vs technician) and escalate when SLAs are at risk - Maintain real-time calendars and availability across crews

Time Capture & Payroll Sync

- Collect technician timesheets with regular/OT hours against work orders and cost codes - Validate pay rules and export summaries to payroll/HR systems - Drive productivity analytics and job cost accuracy

Inventory & Equipment Updates

- Issue/return parts against work orders and jobs - Keep equipment history, warranties, and service tasks up to date - Alert stakeholders when inventory thresholds are met

Billing & ERP Reconciliation

- Generate service invoices from approved labor/material entries - Sync financials to your ERP (e.g., NetSuite, QuickBooks) for AR and reporting - Track WIP and costs for accurate margin analysis

Technical Specifications

Authentication

Username/password with MFA (SMS, email, TOTP) and SSO/OAuth where enabled; supports service accounts or customer-managed credentials

Response format

JSON with consistent resource schemas and pagination across modules

Rate limits

Tuned for enterprise throughput while honoring customer entitlements and usage controls

Session management

Automatic reauth and cookie/session rotation with health checks

Data freshness

Near real-time retrieval of customers, work orders, timesheets, and financial objects

Security

Encrypted transport, scoped tokens, and audit logging; respects Jonas role-based permissions

Webhooks

Optional asynchronous delivery for long-running workflows (e.g., invoice approvals, work order escalations)

Latency

Sub-second responses for list/detail queries under normal load

Throughput

Designed for high-volume work order sync and timesheet processing

Reliability

Retry logic, backoff, and idempotency keys minimize duplicate actions

Adaptation

Continuous monitoring for UI/API changes with rapid adapter updates

Frequently asked questions

Supergood supports workflows across commonly used modules such as Service Management (Work Orders, Dispatch, Service Contracts), Job Cost & Financials (Budgets, Cost Codes, Invoices), Inventory & Equipment, and Payroll/Timesheets, subject to your licensing and entitlements. We scope coverage during integration assessment.

We support username/password + MFA (SMS, email, TOTP) and can operate behind SSO/OAuth when enabled. Sessions are refreshed automatically with secure challenge handling.

Yes. We can normalize service invoices and job cost data to match your ERP schema (e.g., NetSuite, QuickBooks) and deliver updates via webhooks or polling while complying with rate and permission constraints.

Yes. We support downloading artifacts and uploading attachments via signed uploads, with checksum validation and time-limited URLs.

We can operate with customer-managed credentials and network access. Our adapter is designed to handle session persistence and connectivity for on-prem or hosted environments, aligned with your security policies.

Ready to get a real API?