sandbaseai/sandbase-harness

git clone --branch v0.3.2 --depth 1 https://github.com/sandbaseai/sandbase-harness.git
cd sandbase-harness && npm ci && npm run build

Usage

• •Init a workspace: node ../sandbase-harness/dist/index.js init && node ../sandbase-harness/dist/index.js start.
• •Open http://127.0.0.1:3000/dashboard, go to Settings > Models, and paste a model provider API key.
• •Run as a DeepSeek Harness plugin: export MANAGED_AGENTS_URL=http://127.0.0.1:3000 && dsh plugin --profile web add managed-agents && dsh web.
• •The six-tool MCP bridge also ships as a Docker image (Dockerfile.mcp) pointed at the Harness API.

Key features

• ✓SQLite-backed agents, sessions, environments, credential vaults, memory stores, files, skills, and API keys.
• ✓Sandbox backends: local process, Docker (per-session containers), Kubernetes, and self-hosted worker queue.
• ✓Resumable Server-Sent Events for session replay and debugging.
• ✓MCP toolsets, permission policies, built-in tools, and skill packages.
• ✓DeepSeek Harness bridge exposing mcp__sandbase__* tools for agents, sessions, streamed turns, artifacts, and cancellation.

Best for

Running agents that need governance, sandboxing, credential handling, and inspectability beyond a bare model loop.

Caveats

• ⚠Install only from the tagged GitHub source release shown — the unscoped 'managed-agents' name on npm is NOT this project (do not run npx managed-agents).
• ⚠Requires Node.js 22+ and npm 10+; Docker is optional and only for Docker-backed sandboxes.
• ⚠Open by default; authentication only activates once at least one API key exists.
• ⚠Apache-2.0.