dsh-harness-mcp-server

While DeepSeek Harness offers a robust Agent runtime, it traditionally operates as a closed application, making it difficult for external intelligent systems to leverage its power. This plugin breaks down those silos by exposing Harness’s core services—agents, toolchains, and sessions—as a standard MCP Server. By doing so, it enables any compatible client to seamlessly delegate real-world coding tasks to Harness, effectively combining an external brain with Harness’s underlying arms for synergistic results.

Beyond basic connectivity, the extension supports both synchronous execution and asynchronous task queuing with structured feedback. Every task result feeds directly back into the client’s persistent memory, creating a continuous optimization loop. Designed for performance, it reuses agent sessions per working directory, cutting invocation costs by roughly 15–20 times compared to one-shot executions. It also includes sandboxed Bash execution to ensure safe and reliable code manipulation.

This tool is ideal for developers and agentic workflows tackling massive refactors, parallel independent tasks, or scenarios requiring strict context isolation. For routine edits, direct agent interaction remains preferable; however, when you face context window limits or need a stable, reusable programming infrastructure, this plugin delivers exactly that. As a final note, always keep the server bound to localhost to prevent unauthorized access.