API integrations
Integration guide
QuickBooks
Limited accessSync invoices from your existing accounting workflows, subject to account access and setup.
Custom ERP connectors
API-firstBuild direct integrations for internal systems using clean REST endpoints and webhooks.
Procore
Automation planOn the Automation plan, automatic sync imports the Procore projects you choose and, optionally, their payment applications.
Project trackers via webhooks
CustomPush or pull notification events when preliminary notice or lien filing windows change.
Zapier
Private integrationSend lien deadline reminders and events to Slack, email, CRM, or spreadsheets through the private LienDeadline Zapier app; public promotion is pending.
Zapier integration API referenceSheets / Airtable / CSV pipelines
API + automationExport payloads into operations dashboards, reporting tools, and analyst workflows.
QuickBooks Online
Invoice sync for lien deadline operations
LienDeadline connects to QuickBooks Online so users can import recent invoices, verify state and project type, calculate lien deadlines, and optionally write lien status back to the linked invoice.
Connect
Users authorize LienDeadline from the dashboard using Intuit's approved Connect to QuickBooks button.
Import
Recent QuickBooks invoices are listed in the verification queue with customer, amount, date, and calculated deadline fields.
Review
Users confirm state and project type before saving an imported invoice as a monitored project.
Sync back
When enabled, lien status and deadline updates can be written to the linked QuickBooks invoice private note or configured custom field.
Multi-company
Accountants and operators with multiple QuickBooks companies can select the active company and disconnect one company without affecting others.
Disconnect
Users can disconnect from QuickBooks from the integration settings page. Imported calculations remain available in LienDeadline.
AI agents, MCP and reusable skills
For supplier deadline dates, use an authorized direct HTTP tool with the public, stateless supplier-events-v2 contract. Ask the separate Florida payment and termination questions or Kansas extension question as yes, no, or unknown. An unknown relevant answer leaves the affected deadline review-required with no date.
The open-source LienDeadline MCP server sends the same v2 contract with those answers from version 0.3.0 or later, so MCP-enabled clients can use it for dates. Its state-guide tools provide editorial references. Run it locally with npx -y liendeadline-mcp, or connect a client to the hosted endpoint at https://mcp.liendeadline.com/mcp, which serves the same public tools with nothing to install.
The LienDeadline agent skill documents the v2 supplier event contract and its review limits. Install it with npx skills add LienDeadline/skills, as a Claude Code plugin, or as a Gemini CLI extension.
Tool and skill support depends on your AI platform and account. Review the adapter’s permissions, keep credentials in its secret store, and require confirmation before saving project data or sending notices.