Trigger Callbacks from
Any App or Workflow via API
LimeCall's programmable callback API lets developers and no-code teams fire instant phone callbacks from any trigger — form submissions, CRM events, chat escalations, or custom business logic.
Full API docs included · Free tier available · No rate limits on paid plans
Everything You Need to Build
Custom Callback Automation
A complete developer toolkit for triggering, scheduling, and tracking programmatic callbacks at scale.
REST API
Trigger callbacks programmatically from any application or script. Full REST API with JSON responses, authentication tokens, and comprehensive documentation.
Webhooks
Receive real-time events for every callback state change — initiated, connected, completed, or missed. Build reactive workflows that act on call outcomes.
Zapier Integration
Connect LimeCall to 5,000+ apps without writing a line of code. Trigger callbacks from CRM updates, form submissions, e-commerce events, and more.
Custom Triggers
Define exactly when callbacks should fire based on any data signal — page visits, score thresholds, subscription events, or custom business logic.
Scheduling Rules
Specify callback windows, time zones, and retry schedules. Ensure callbacks only happen during business hours and retry automatically if the first attempt fails.
Retry Logic
Configure automatic retry sequences with customisable intervals. If a call is not answered, LimeCall retries up to 5 times across a timeframe you define.
What Teams Build with
Programmable Callbacks
Form Submission Trigger
When a visitor submits your lead form, the API fires a callback request to your team instantly — no manual handoff, no delay, no lost leads.
CRM Workflow Trigger
Trigger callbacks when a deal reaches a specific stage, a lead score crosses a threshold, or a contact has not been touched in 48 hours.
Chat Escalation
When a live chat reaches a point where a human call would close faster, trigger an instant callback automatically — bridging chat and voice seamlessly.
E-commerce Cart Events
Trigger high-value callbacks when a cart exceeds a threshold, a customer abandons a high-value order, or a VIP customer needs concierge service.
Integrate in 3 Steps
From API key to live callbacks in minutes. Our documentation covers every language and use case.
Authenticate & Get Your API Key
Sign up for LimeCall and grab your API key from the developer dashboard. All API calls are authenticated with Bearer tokens over HTTPS.
POST a Callback Request
Send a POST request with the customer's number, your team's number, and optional scheduling parameters. LimeCall initiates the callback within 500ms.
Handle Webhook Events
Subscribe to webhook events to receive real-time updates on call outcomes. Update your CRM, trigger follow-ups, or log data — fully automated.
Frequently Asked Questions
What is a programmable callback?
Do I need a developer to use programmable callbacks?
What programming languages does the LimeCall API support?
Can I schedule callbacks for a future time?
How do webhooks work with programmable callbacks?
Build Smarter Callback Workflows.
Start with a Free API Key.
Full REST API, webhook events, and Zapier integration included on every plan. Start building in minutes.
Free tier available · Full docs included · No lock-in