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Xerg has one canonical skill file and one hosted MCP endpoint. Client-specific differences are setup details, not separate skill files.

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Public agent surfaces

  • https://xerg.ai/skill.md is the canonical public SKILL.md mirror.
  • https://xerg.ai/llms.txt is the short machine-readable site map.
  • https://xerg.ai/llms-full.txt is the longer agent reference.
  • @xerg/cli is the public npm CLI package.
  • @xerg/schemas is the MIT-licensed public wire-contract package.

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Codex

Use SKILL.md for repeatable local audit workflows and hosted MCP for workspace data. For local skill use, copy or link the bundled skill directory into a Codex skill search path: 
node_modules/@xerg/cli/skills/xerg
For user-wide Codex installs, use: 
~/.agents/skills/xerg
For repo-scoped Codex installs, use: 
.agents/skills/xerg
Codex hosted MCP config in ~/.codex/config.toml: 
[mcp_servers.xerg]
url = "https://mcp.xerg.ai/mcp"
bearer_token_env_var = "XERG_API_KEY"
Set XERG_API_KEY to a workspace API key before starting Codex.

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Cursor

Run the guided setup: 
npx @xerg/cli mcp-setup
For project config, use Cursor’s remote MCP shape with the Xerg hosted endpoint and a Bearer token: 
{
  "mcpServers": {
    "xerg": {
      "type": "http",
      "url": "https://mcp.xerg.ai/mcp",
      "headers": {
        "Authorization": "Bearer <XERG_API_KEY>"
      }
    }
  }
}

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Claude Code and Claude Desktop

Use the standard remote MCP JSON shape: 
{
  "mcpServers": {
    "xerg": {
      "type": "http",
      "url": "https://mcp.xerg.ai/mcp",
      "headers": {
        "Authorization": "Bearer <XERG_API_KEY>"
      }
    }
  }
}

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Antigravity

Use the generic streamable HTTP MCP settings if your Antigravity install supports remote MCP servers with Bearer headers. Xerg does not publish Antigravity-specific setup steps yet because the product-specific import/config format still needs to be verified against official Antigravity documentation.

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Generic MCP

Use this server endpoint: 
https://mcp.xerg.ai/mcp
Use this auth header: 
Authorization: Bearer <XERG_API_KEY>
Metadata endpoint: 
https://mcp.xerg.ai/server.json

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Local CLI for agents

Agents can run local audits without hosted auth: 
npx @xerg/cli audit --json
npx @xerg/cli audit --compare
npx @xerg/cli audit --fail-above-waste-rate 0.30
Hosted push and hosted MCP require an active workspace API key.