# SandBase Harness

> Self-hosted, open-source runtime for AI agent sessions: sandboxes, MCP toolsets, credential vaults, memory, audit replay, and a built-in web Console.

- **Category:** AI Agents
- **Licence:** Apache-2.0
- **Latest version:** v0.3.8
- **Open source:** oss
- **Languages:** Typescript
- **Platforms:** Build from Source
- **Tags:** SQLite, Mcp, Webhooks, Devops, Mcp Server, Ai Agents, Sandbox, Observability, Local First, LLM, Kubernetes, Docker, Audit log, Self Hosted, Model Context Protocol, Audit logging, Sandboxed execution, Agent runtime, Ai infrastructure, Agent harness, Mcp gateway, Agent Observability, Harness Engineering, Agent Sandbox, Dsh Plugin, Deepseek Harness, Agent Plugin

## Description

SandBase Harness (its CLI is called managed-agents) is a local-first runtime layer for production AI agents, aimed at developers who need sessions, tool governance and auditability rather than another model SDK. A single Node.js process serves both a /v1 API built around the Claude Managed Agents contract and a built-in web Console. Agents run tools in local-process, Docker, Kubernetes or self-hosted worker sandboxes, and access is controlled with MCP toolsets, permission policies, approval gates and credential vaults; long-running work stays inspectable through an append-only event log, resumable event streams and replay. Memory stores, skill packages, declarative manifests applied from the CLI, scheduled deployments and signed webhook subscriptions cover the operations side. Model access is pluggable — OpenAI, Anthropic and MiniMax are named, as are any OpenAI-compatible endpoints including DeepSeek — and configured from the Settings screen. Install it by cloning the tagged GitHub release, building with npm, then running init and start; metadata stays in a local SQLite database. No official container image exists for the runtime itself (the published ghcr.io image is only the sandbox helper) and the unscoped managed-agents npm package is explicitly not this project. Releases are pre-1.0 (v0.3.8) under the Apache-2.0 licence.

## Links

- [Homepage](https://github.com/sandbaseai/sandbase-harness)
- [Website](https://github.com/sandbaseai/sandbase-harness/blob/main/docs/installation.md)
- [Docker](ghcr.io/sandbaseai/sandbase-harness-sandbox)
- [Usage Guide](https://github.com/sandbaseai/sandbase-harness/blob/main/docs/usage.md)
- [API Reference](https://github.com/sandbaseai/sandbase-harness/blob/main/docs/api.md)
- [Deployment guide](https://github.com/sandbaseai/sandbase-harness/blob/main/docs/deployment.md)
- [GitHub Discussions](https://github.com/sandbaseai/sandbase-harness/discussions)
- [Showcase](https://github.com/sandbaseai/sandbase-harness/blob/main/docs/showcase.md)

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Source: https://selfhost.directory/project/sandbase-harness