SMSPitThe Sandbox for SMS

A self-hosted SMS sandbox for local development, testing, and CI/CD — capture, inspect, search, replay, and debug SMS messages without sending real SMS to mobile networks.

Get Started

Architecture

API Reference

View on GitHub

Capture, don't deliver

Point your app at SMSPit instead of a real SMS provider. Every outgoing message is captured, searchable, and replayable — never actually sent.

Provider-compatible

Drop-in endpoints for MessageBird, Vonage, and AWS SNS — swap the base URL your existing SDK already uses, no code changes.

AI-powered

Automatic OTP detection, message classification, and spam scoring on every captured message, with a manual override when it's wrong.

Multi-tenant

Organizations, teams, and per-org rate limiting — API keys are scoped so tenants never see each other's data.

Production-ready

Kubernetes manifests, a Helm chart, OpenTelemetry tracing, Prometheus metrics, and Grafana dashboards, all included.

Native SDKs

PHP, Go, Node.js, and Python clients with no third-party HTTP dependency, each verified against a live instance.

Where to go next

New to SMSPit? Start with Getting Started for a guided first run, or jump straight to a topic:

I want to...	Go to
Run SMSPit locally, step by step	Getting Started
Look up every endpoint and field	OpenAPI Reference
Understand how the services fit together	Architecture
Use a native client instead of raw HTTP	SDKs
Deploy to production (Compose or Kubernetes)	Production Deployment
Understand the security/auth model	Security
See what changed release to release	Changelog
Fix a problem	Troubleshooting