Behavior Runtime MCP

@putervision/behavior-mcp is a Model Context Protocol (MCP) server that executes deterministic behavior trees directly in browser runtimes at ~60Hz with reactive trigger preemption, frame recordings, SHA-256 Merkle audit chains, and a 5-layer safety guardrail stack. It runs locally over stdio via the published package.

People who work with agent behavior, putervision and browser automation and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-15 · ★ 2 · #128 OF 255 MAINTAINED BROWSER AUTOMATION · VERIFIED 2026-09-18

MIT · TypeScript servers · how we verify → /methodology

01 · Install Behavior Runtime MCP

Claude Code

claude mcp add putervision-behavior-mcp -- npx -y @putervision/behavior-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "putervision-behavior-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@putervision/behavior-mcp"
      ]
    }
  }
}

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

repo age created 2026-08-22 - young repo, little track record yet

license MIT - declared in the repository

npm package @putervision/behavior-mcp - published under the repo owner's npm scope (@putervision)

registry namespace io.github.putervision is GitHub-verified and matches the repo owner

03 · What Behavior Runtime MCP can do

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

Latest releases

0.2.1 · 2026-09-17

0.1.2 · 2026-09-10

04 · Who maintains Behavior Runtime MCP

Behavior Runtime MCP is maintained by putervision. We track 6 MCP servers from putervision - 6 actively maintained, 210 combined GitHub stars, oldest repo from Dec 2025. Full record: all servers from putervision.

05 · Facts

repository: github.com/putervision/behavior-mcp
website: https://behaviormcp.com/
category: browser automation - ranked #128 of 255 actively-maintained browser automation servers as of 2026-09-18.
release cadence: 2 releases in the last 90 days (latest 2026-09-17)
registry: io.github.putervision/behavior-mcp (active, first published 2026-09-10 · 2 versions)
packages: npm:@putervision/behavior-mcp

06 · Behavior Runtime MCP FAQ

What is Behavior Runtime MCP?

Is Behavior Runtime MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-15 and it shipped 2 releases in the last 90 days. We re-verify nightly.

How do I install Behavior Runtime MCP?

Run `npx -y @putervision/behavior-mcp`. You can also paste the ready-made client config above.

Does Behavior Runtime MCP 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 Behavior Runtime MCP

Alternatives to Behavior Runtime MCP

Maintained browser automation servers if Behavior Runtime MCP isn't the fit.

Pairs well with

Servers that cover what Behavior Runtime MCP doesn't - only shown when the pairing reason fits the companion.

More browser automation MCP servers · QualityMax QA MCP · Perplexity Comet MCP · Rebase · Page Map · Netwright

More TypeScript MCP servers · State Memory MCP · Visual Memory MCP · Vibe Check MCP Server · Claude Agy MCP · Pyth Pro MCP Server · see all