SIGNL4 API

signl4.com

REST API for integrating third-party systems with SIGNL4 to trigger alerts (Signls), retrieve alarms, and sync alert state changes.

The SIGNL4 API API uses api key authentication; has freemium pricing; offers a free tier (Starter plan $0/mo for up to 5 users, includes Email, Webhook, and REST API access). Verified 2026-07-12 with per-field source links.

Communication Verified 2026-07-12 low confidence

Base URL

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no source

Auth

api_key

signl4.com ↗

Free tier

Starter plan $0/mo for up to 5 users, includes Email, Webhook, and REST API access

signl4.com ↗

Pricing model

freemium

signl4.com ↗

Pricing

Starter $0/mo (up to 5 users); Notify & Connect $9/user/mo; Optimize $15/user/mo (annual, $19 monthly); Maximize $25/user/mo (annual, $29 monthly); add-ons for stakeholder seats and dedicated phone numbers

signl4.com ↗

Rate limits

not documented null

no source

OpenAPI spec

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no source

MCP server

not documented null

no source