# walkerOS Source Browser

MCP server that creates, parses, and audits walkerOS data-elb tracking attributes in HTML markup. Useful when tagging web interfaces for analytics.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 347
- Author: elbwalker
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/elbwalker/walkerOS/tree/HEAD/packages/mcps/source-browser
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/mcp/walkeros-source-browser

## What it does

The server communicates over standard I/O and parses real DOM trees. No external accounts or tokens are needed.

Three tools handle the tagging process. The `generate_tagging` helper creates attribute sets from structured specs. Meanwhile, `parse_tagging` inspects HTML snippets to extract triggered events. To catch broken markup, `validate_tagging` flags detached actions and missing entities. While `data-elb` acts as the default prefix, the `prefix` parameter allows custom attribute naming.

Two documentation guides are available through the `walkeros://` protocol. They cover HTML markup conventions and the `createTagger()` fluent interface.

## Requirements
- Needs: Node.js (commands run via npx)

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add source-browser -- npx -y @walkeros/mcp-source-browser
```

### Codex

**Platform CLI**
```bash
codex mcp add source-browser -- npx -y @walkeros/mcp-source-browser
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "source-browser": {
            "command": "npx",
            "args": [
                "-y",
                "@walkeros/mcp-source-browser"
            ]
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "source-browser": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@walkeros/mcp-source-browser"
            ]
        }
    }
}
```

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add source-browser npx -y @walkeros/mcp-source-browser
```

## When to use it
- generate data-elb analytics attributes for interface elements
- inspect HTML snippets to identify dangling actions or missing entities
- extract emitted walkerOS events and globals from existing markup
- switch tracking attributes to a custom prefix

## Example prompts
- Generate walkerOS tagging attributes for a product card with name and price
- Run validate_tagging on this pricing table markup to find missing entities
- Call parse_tagging on the navigation bar snippet to see what events it emits

## Similar
- [Front-End Checklist](https://affpapa.org/en/nevibecode/mcp/front-end-checklist.md) — MCP server · ★ 74559
- [tldraw](https://affpapa.org/en/nevibecode/mcp/tldraw.md) — MCP server · ★ 51091
- [Figma-Context-MCP](https://affpapa.org/en/nevibecode/mcp/figma-context-mcp.md) — MCP server · ★ 16062
- [mcp-server-chart](https://affpapa.org/en/nevibecode/mcp/mcp-server-chart.md) — MCP server · ★ 4402
- [Dembrandt](https://affpapa.org/en/nevibecode/mcp/dembrandt.md) — MCP server · ★ 3821
- [RevoGrid DataGrid MCP Pro](https://affpapa.org/en/nevibecode/mcp/revogrid-datagrid-mcp-pro.md) — MCP server · ★ 3450

From the same set: [elbwalker/walkeros](https://affpapa.org/en/nevibecode/by/elbwalker/walkeros.md) — 2 cards

---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md