Embedded IntegrationOpen Source

Frigg

Open-source integration framework built by Left Hook. Runs in your own cloud and covers what teams typically buy or build separately: iPaaS-style workflows, embedded SaaS integrations, unified-API normalization, AI-agent tool layers, and the ad-hoc endpoints that power in-app UI surfaces in partner platforms like Slack, HubSpot, and Salesforce.

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Quick Info

Our ExperienceExpert

IntegrationsGrowing module library

Founded2021

Target MarketB2B SaaS, Product Teams, Developers

PricingOpen

Deployment

Self-HostedEmbeddable

Key Features

Runs in your own cloud (no SaaS lock-in)

Covers iPaaS, embedded, unified-API, AI-tooling, and partner-platform UI use cases from one framework

Backend for Slack apps, HubSpot CRM cards, Salesforce Lightning, and other marketplace UI surfaces

Modular API module registry with built-in OAuth, API-key, and JWT auth

Event-driven architecture (webhook-first, queue-friendly)

MCP server support for AI agents

MIT licensed — commercial use, modification, redistribution all permitted

How We Help with Frigg

Implementation & Setup

We'll help you configure Frigg for your specific use case, set up proper authentication, and establish best practices from day one.

Custom Integration Development

Need custom integrations built on Frigg? Our team has expert-level experience building production-grade solutions.

Training & Documentation

Get your team up to speed with hands-on training and clear documentation for maintaining your Frigg integrations.

About Frigg

Started in 2021 as Left Hook's internal framework after years of building one-off integrations for SaaS clients; open-sourced under MIT in 2022. Powers many of the integrations Left Hook ships for clients today.