Shrink MCP schema overhead in DeepSeek Harness: 1,000 remote tools behind 2 exact-schema interfaces, plus a local calculator and CI budget Action.
Shrink large MCP catalogs to a two-tool model surface.
MCP Lens lets DeepSeek Harness search and call 1,000 remote tools through two stable model-facing interfaces. Instead of sending every tool schema on every turn, it reveals exact schemas only for a small ranked set when a tool is actually needed.
- Spend less on input-heavy turns: in the dated three-task pilot, estimated DeepSeek V4 Flash cost fell from $0.0307204 to $0.0034707. - Keep more room for the real task: the same pilot reduced request/header.tools JSON from 674,249 B to 27,401 B. - Retrieve more relevant covered calls: on a frozen MCP-Atlas-derived convenience holdout, Recall@5 rose from 0.062610 to 0.246656 across 304 untouched prompts. This is lexical retrieval evidence, not an official MCP-Atlas or end-to-end score. - Narrow the tool-choice surface: search reveals only a small ranked set of exact schemas, and the final server/tool is still gated by allowTools and denyTools. - Preserve completion in the tested pilot: both arms completed 3/3 tasks, while Lens used one extra search step.
Use MCP Lens if you have dozens to thousands of MCP tools, multiple servers, or long-tail tools that are expensive to advertise on every turn. Skip it if you have only a handful of tools that are used almost every request.
Prerequisites: DeepSeek Harness 0.1.0-rc.6, Node.js ^22.19.0 or =24.0.0, and pnpm on PATH. The dsh plugin command delegates installation to pnpm.
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
[](https://mcp.liqiwa.com/s/labmimors--dsh-mcp-lens.html)
TypeSafe Jev for DeepSeek Harness, the Model Context Protocol, and plain Node: typed judgments instead of prose, offline by default.
pazz11/Jnpz改配置+重启才能加 MCP？DeepSeek Harness (DSH) 插件「技能配置」解决：设置页粘贴 JSON 即连 MCP 服务器、热加载免重启；上传 zip/.skill 自动识别 SKILL.md，创建/编辑/启停技能，即点即用
Dominic789654/awesome-deepseek-harnessA curated list of plugins, skills, MCP servers, patch/profile layers, orchestrators & UIs for DeepSeek Harness (DSH). Visualization · PPT · Coding · Agents · Loops (auto-research) and more. #dsh
PerryLink/dsh-mcp-panelMCP management console for the official DeepSeek Harness MCP client: /mcp command with health diagnostics and pipeline trial calls, a Settings MCP tab with server CRUD (approval-gated writes, automati
oomol-lab/dsh-oomolOOMOL Connector for DeepSeek Harness—discover connected apps and execute Actions through progressive MCP discovery without exposing provider credentials.
noteflowai/dsh-skills-anywhereReuse Agent Skills across DeepSeek Harness and MCP. Check local SKILL.md files in the browser or CI, with parser diagnostics, file hashes and clear exit codes. Try the Hugging Face playground.
The top new MCP servers of the week, every Monday. No spam, unsubscribe anytime.