Behavior Runtime MCP

Name: Behavior Runtime MCP
Author: putervision

by putervisionversion 0.4.1i★ –iRuns on your computer

Registry nameio.github.putervision/behavior-mcp

Install

Overview

Description from the maker (original English)

In-browser ~60Hz behavior tree execution engine with reactive triggers and blackboard projection.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Web & browsers

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

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

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account putervision, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Web & browsersi

More stars than 0% of the other 878 servers in this category
Published to the registry more recently than 52% of the other 878 servers in this category
Basic checks equal to or better than 100% of the other 878 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Behavior Runtime MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.1) reached the registry 34 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Browser Use, Chrome DevTools MCP, MCP Server Browser

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Lets AI use Chrome’s developer tools to inspect pages, find what makes them slow and spot errors. Made by the Chrome DevTools team.

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Install

MCP Server Browser

by bytedance

MCP server for browser use access

Runs on your computer★ 39,550Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@putervision/behavior-mcp

High-Frequency (~60Hz) In-Browser Behavior Tree Tactical Runtime Engine for AI Agents

@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.

🌐 Official Documentation: putervision.com • Interactive Web Docs

⚡ 15-Second Quick Start

# 1. Initialize runtime & seed default behavior trees in your workspace

npx @putervision/behavior-mcp init

2. Run system diagnostic and health checks

npx @putervision/behavior-mcp doctor

3. Inspect active executions, blackboard state, and reactive triggers

npx @putervision/behavior-mcp inspect

🛠️ 10 Core MCP Tools

Tool	Actions	Purpose
`load_behavior`	`load`, `unload`, `swap`	Inject, initialize, or hot-swap a behavior tree in browser runtime
`set_parameters`	`set`, `get`, `reset`	Dynamically update or query runtime execution parameters
`get_status`	`current`, `history`, `tree_state`	Query active status, node traversal path, tick count, duration
`abort_behavior`	`abort`, `pause`, `resume`	Halt, pause, or resume behavior execution safely
`register_trigger`	`register`, `list`	Configure reactive interrupt triggers with priority preemption
`replay_recording`	`capture`, `list`	Capture or inspect deterministic browser action sequences
`get_metrics`	`current`, `history`	Retrieve runtime telemetry, tick durations, and stuck events
`manage_behaviors`	`register`, `get`, `list`	CRUD for immutable behavior tree JSON with SHA-256 tree hashes
`manage_blackboard`	`get`, `set`	Read, write, or query shared behavior tree blackboard variables
`manage_runtime_db`	`stats`, `audit`, `snapshot`, `restore`	SQLite diagnostics, SHA-256 Merkle audit, and checkpoint rollback

🛡️ 5-Layer Safety Guardrail Stack & System 1 Invariants

Fail-Closed Evaluator: Unrecognized node definitions throw fatal exceptions immediately.
60Hz Tick Invariant & Synchronous `semantic_check`: The loop never blocks on external network calls; semantic condition checks resolve synchronously against blackboard caches.
HMAC Intention Gate Verification: Intentions dispatched to execution nodes require unexpired, cryptographically signed dispatch tokens (PENTAD_HMAC_SECRET).
Action Rate Limiter & Leaf Policy Gate: Strict 60 actions/sec maximum throughput ceiling and policy guardrails blocking irreversible mutations.
Emergency Kill Switch & Watchdog Heartbeat: Atomic safety latch and watchdog timers halting execution if tick stalls beyond 5,000ms.

📚 Deep Documentation Guides

📖 [Formal API Reference](docs/api-reference.md): Full parameter tables, type definitions, and tool schemas.
💡 [Core Architecture & Concepts](docs/concepts.md): Behavior tree execution model, ~60Hz loop, and trigger lifecycle.
🖥️ [CLI Usage Guide](docs/cli-usage.md): Complete CLI command reference (init, doctor, inspect, run).
💾 [Database Schema](docs/database-schema.md): SQLite table structures, indexes, and Merkle audit ledger.
⚙️ [Configuration Reference](docs/configuration.md): .behavior-mcp.json parameters and environment variables.

🔗 Client Configuration & Environment

Add to .cursor/mcp.json or .vscode/mcp.json:

"mcpServers": { "behavior-mcp": { "command": "behavior-mcp", "args": ["run"], "env": { "PENTAD_HMAC_SECRET": "your-secure-shared-secret-here" } } } }

🧪 Testing

# Run full unit and integration test suite across 38 test files (266 tests)

npm test

Behavior Runtime MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Web & browsersi

Common questions

Alternatives

Browser Use

Chrome DevTools MCP

MCP Server Browser

README from the maker

@putervision/behavior-mcp

⚡ 15-Second Quick Start

2. Run system diagnostic and health checks

3. Inspect active executions, blackboard state, and reactive triggers

🛠️ 10 Core MCP Tools

🛡️ 5-Layer Safety Guardrail Stack & System 1 Invariants

📚 Deep Documentation Guides

🔗 Client Configuration & Environment

🧪 Testing

📄 License