walkerOS Source Browser MCP Server

Model Context Protocol server for walkerOS HTML tagging. Generates, parses, and validates data-elb attributes using real DOM parsing, so an AI assistant can tag a page and check its own work. Runs locally, no account or API token. Its 3 documented tools cluster into generate, parse, validate.

People who work with tagging, tag manager and tracking and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-16 · ★ 344 · #7 OF 81 MAINTAINED DATA & ANALYTICS · VERIFIED 2026-09-18

MIT · TypeScript servers · how we verify → /methodology

01 · Install walkerOS Source Browser

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add elbwalker-walkeros-packages-mcps-source- -- npx -y @walkeros/mcp-source-browser

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "elbwalker-walkeros-packages-mcps-source-": {
      "command": "npx",
      "args": [
        "-y",
        "@walkeros/mcp-source-browser"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package @walkeros/mcp-source-browser - the @walkeros scope differs from the repo owner (elbwalker); confirm it's the project's official package

registry vendor namespace io.walkeros - domain-verified with the official MCP registry

03 · What walkerOS Source Browser can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can parse an HTML snippet and extract the walkerOS events and globals it produces, and check tagging for orphan actions, missing entities, unknown triggers, and entities without actions.

The 3 tools it gives your agent

Extracted from the project's README - what walkerOS Source Browser lets an agent do.

generate_tagging: - Turn structured input into data-elb attributes and an example HTML snippet
parse_tagging: - Parse an HTML snippet and extract the walkerOS events and globals it produces
validate_tagging: - Check tagging for orphan actions, missing entities, unknown triggers, and entities without actions

Latest releases

v4.6.0 · 2026-09-10

Changes · The Firehose destination no longer discards every config field except settings · during init, which silently dropped before, consent, mapping, data and · next. A before transformer chain configured on the…

v4.5.0 · 2026-08-24

Changes · Add package READMEs and npm keywords. The MCP packages now ship install · instructions for Claude Code, Cursor, and VS Code plus MCP registry metadata · (mcpName). · The AWS Lambda and GCP Cloud Functions…

v4.4.0 · 2026-08-17

Changes · Every event now gets its span id at entry, so all of its records carry the same · id and its journey is whole from the first hop. Batched deliveries report per · each event in a batch gets its own flush or…

04 · Who maintains walkerOS Source Browser

walkerOS Source Browser is maintained by elbwalker. We track 2 MCP servers from elbwalker - 2 actively maintained, 344 combined GitHub stars, oldest repo from Mar 2022.

walkerOS Flow Build, validate, simulate, and deploy walkerOS event pipelines ★ 344

05 · Facts

repository: github.com/elbwalker/walkeros
website: https://www.walkeros.io/docs/apps/mcp
category: data & analytics - ranked #7 of 81 actively-maintained data & analytics servers as of 2026-09-18.
release cadence: 5 releases in the last 90 days (latest 2026-09-10)
registry: io.walkeros/source-browser (active, first published 2026-09-02)
packages: npm:@walkeros/mcp-source-browser

06 · walkerOS Source Browser FAQ

Is walkerOS Source Browser still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-16 and it shipped 5 releases in the last 90 days. We re-verify nightly.

What can walkerOS Source Browser do?

How do I install walkerOS Source Browser?

Run `npx -y @walkeros/mcp-source-browser`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does walkerOS Source Browser run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to walkerOS Source Browser

Alternatives to walkerOS Source Browser

Maintained data & analytics servers if walkerOS Source Browser isn't the fit.

Pairs well with

Servers that cover what walkerOS Source Browser doesn't - only shown when the pairing reason fits the companion.

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