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Behavior Trees

io.github.behaviortrees/behaviortreesbehaviortreesstreamable-httpv0.1.1Scanned

Validate, convert (behavior3 JSON, BehaviorTree.CPP XML) and open behavior trees in a visual editor

6 tools: 1 do something that can't be undone, 1 change things and 4 only read.

Tools: 0 delete, 1 irreversible, 1 write, 4 read.
  • Reads private data · 0
  • Reads text others write · 1
  • Can send data out · 1
  • 2 findings

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2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

6 tools

Can't be undone 1Claude Code: ask
  • convert_treeConvert between behavior3 JSON and BehaviorTree.CPP XML (v4 for ROS 2 Jazzy and Groot2, v3 for ROS 2 Humble), the same way the editor imports and exports.Can send data out1 finding

    Why it is in this group

    • The name "convert_tree" says "convert": a word for a change.
    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • outboundThe input takes a destination (input.to): what the tool writes goes there.

    Findings

    • Warn

      The server marks "convert_tree" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "convert_tree" says "convert": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Convert between behavior3 JSON and BehaviorTree.CPP XML (v4 for ROS 2 Jazzy and Groot2, v3 for ROS 2 Humble), the same way the editor imports and exports. Returns the converted text and any issues (BT.CPP has no equivalent for some behavior3 nodes and vice versa).

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Changes things 1Claude Code: ask
Only reads 4Show 4 read-only tools
  • get_exampleComplete, working example trees (enemy patrol, cooldown-gated attacks, robot navigation with recovery, and more) to learn the format from or start with.No findings

    Why it is in this group

    • The name "get_example" says "get": a word for reading.
    Description, as the server wrote it
    Complete, working example trees (enemy patrol, cooldown-gated attacks, robot navigation with recovery, and more) to learn the format from or start with. Without an id, lists the examples; with an id, returns that tree as behavior3 JSON.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_node_typesThe built-in behavior3 nodes a tree can use without declaring them: composites (Sequence, Priority = selector/fallback, MemSequence, MemPriority), decorators (Inverter, Repeater, M…No findings

    Why it is in this group

    • The name "list_node_types" says "list": a word for reading.
    Description, as the server wrote it
    The built-in behavior3 nodes a tree can use without declaring them: composites (Sequence, Priority = selector/fallback, MemSequence, MemPriority), decorators (Inverter, Repeater, MaxTime, ...) and leaves (Wait, Succeeder, Failer, ...), with descriptions and default properties.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • read_guidePractical guides from behaviortrees.com/learn as Markdown: what behavior trees are, node types, blackboards, debugging, structuring large trees, and behavior trees in Unity, Unreal…Reads text others writeNo findings

    Why it is in this group

    • The name "read_guide" says "read": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Practical guides from behaviortrees.com/learn as Markdown: what behavior trees are, node types, blackboards, debugging, structuring large trees, and behavior trees in Unity, Unreal, Godot, Python and robotics (BehaviorTree.CPP, ROS 2, Nav2). Without a slug, lists the guides.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • validate_treeCheck a behavior tree for errors before using it: missing or dangling children, nodes with two parents, cycles, decorators with more than one child, leaves with children, unknown n…No findings

    Why it is in this group

    • The name "validate_tree" says "validate": a word for reading.
    Description, as the server wrote it
    Check a behavior tree for errors before using it: missing or dangling children, nodes with two parents, cycles, decorators with more than one child, leaves with children, unknown node names, and BehaviorTree.CPP import problems. Returns valid (true when there are no errors), the trees found, and findings at error, warning or info level.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write1
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warncreate_editor_link

    The server marks "create_editor_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "create_editor_link" says "create": a word for a change.

    What this check looks for
  • Warnconvert_tree

    The server marks "convert_tree" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "convert_tree" says "convert": a word for a change.

    What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 0.1.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http behaviortrees https://www.behaviortrees.com/mcp
claude mcp add --transport http behaviortrees https://www.behaviortrees.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__behaviortrees__validate_tree",
      "mcp__behaviortrees__list_node_types",
      "mcp__behaviortrees__get_example",
      "mcp__behaviortrees__read_guide"
    ],
    "ask": [
      "mcp__behaviortrees__create_editor_link",
      "mcp__behaviortrees__convert_tree"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as behaviortrees. Review it before you use it.

Capability tags behind 2 rules
  • mcp__behaviortrees__convert_tree outbound
  • mcp__behaviortrees__read_guide untrusted-input

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.behaviortrees/behaviortrees/verify?hash=2397eac83224ef6eb3738a890ea9c9aa6a048c6ef75510c31d1e406b2cb0aca4" | jq -e '.changed == false'

Pinned hash 2397eac83224, from Nov 3, 2026, 18:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.behaviortrees/behaviortrees/changes.xml

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Badge

anlyon.dev badge for io.github.behaviortrees/behaviortrees
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Source: MCP Registry · repository. Synced Nov 3, 2026, 19:17 UTC.