{
 "schema_version": 1,
 "generated": "2026-10-20",
 "id": "emo-xiaoyu-harness-mix--share-skills-and-mcp-across-harnesses",
 "repo": "emo-xiaoyu/harness-mix",
 "repo_url": "https://github.com/emo-xiaoyu/harness-mix",
 "repo_slug": "emo-xiaoyu-harness-mix",
 "title": "Install one skill or MCP server for many harnesses",
 "page_title": "How to install one skill or MCP server for many harnesses with Harness Mix",
 "summary": "Add a SKILL.md or remote MCP server once in Settings and use it across supported harnesses.",
 "who": "A developer who keeps the same team skills or internal MCP tools and wants every harness to see them without editing each harness's config by hand.",
 "problem": "Each coding agent keeps its own skill folders and MCP settings, so the same setup has to be repeated for each tool.",
 "outcome": "A skill installed through drag and drop, or a remote MCP server with custom headers, available to the selected harnesses.",
 "steps": [
  "Run `npm install --global @harness-mix/cli`, then run `harness-mix` to open Codex Desktop with Harness Mix.",
  "Open 设置 → Skills and drag a single `SKILL.md` file or a full skill folder into the drop area.",
  "Choose Global or Project scope for the skill.",
  "Open 设置 → MCP, add a Streamable HTTP or SSE server, and add any custom headers it needs.",
  "Start a new session with a harness and confirm the skill or MCP tool appears in that harness."
 ],
 "agent_prompt": "Using the repo emo-xiaoyu/harness-mix, install the skill at <path to SKILL.md> at Global scope and register the remote MCP server at <server URL>. Report the install location for each harness and confirm that the skill is listed in one harness session.",
 "agents": [
  "codex"
 ],
 "difficulty": "Intermediate",
 "time": "30 minutes",
 "basis": "readme",
 "caveat": "Skill and MCP support differs by harness, and the matrix marks MCP as not declared for Pi and Oh My Pi.",
 "category": "Software and DevOps",
 "tags": [
  "Software and DevOps"
 ],
 "lang": "typescript",
 "requirements": [
  "Windows, macOS, or Linux with a recent Node.js LTS and npm",
  "Codex Desktop installed",
  "At least one native Harness CLI (for example Codex, Pi, or Claude Code) installed and logged in on the same machine, since Harness Mix does not read or store Harness account keys"
 ],
 "risk": "none",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.8,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/emo-xiaoyu-harness-mix/share-skills-and-mcp-across-harnesses/",
 "md": "https://dedupedai.com/use-cases/emo-xiaoyu-harness-mix/share-skills-and-mcp-across-harnesses/index.md",
 "disclaimer": "Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked \"Seen in the wild\", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email hello@dedupedai.com and we will look at it promptly.",
 "api": "https://dedupedai.com/api/v1/usecases/emo-xiaoyu-harness-mix--share-skills-and-mcp-across-harnesses.json",
 "api_version": "v1"
}