Inngest
Make every backend unbreakable with durable execution
Inngest is an open source SDK for building durable, event-driven workflows, background jobs, and AI agents. Functions are wrapped in steps that can pause, fan out, defer, retry, and A/B test, so developers can orchestrate async code without provisioning queues, brokers, or workers. It runs locally or on Inngest Cloud and integrates with existing codebases across TypeScript, Node.js, Python, and FastAPI.
Core capabilities include flow control with concurrency limits, throttling, rate limiting, debouncing, dynamic prioritization, batch processing, and declarative cancellation; observability with traces, metrics, and evals; sandboxes for testing changes against production triggers; and A/B testing with scoring. It supports background jobs, messaging queues, workflow orchestration, scheduled and cron jobs, webhooks, and serverless background jobs. Security features include SOC 2 Type II compliance, end-to-end encryption, SSO and SAML, and HIPAA BAA availability.
Inngest is aimed at engineering teams building event-driven applications and AI agents. It is packaged as a free plan with monthly limits and no credit card required, alongside Pro, Business, and Enterprise editions with seat-based and usage-based allowances for executions, events, and observability data.
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