Behavior Trees
NPM · BEHAVIORTREES · 2 COMPONENTS
Validate, convert (behavior3 JSON, BehaviorTree.CPP XML) and open behavior trees in a visual editor
Available components
Last scanned (6 hours ago)
Scores higher than 35% of npm servers
Category Developer Tools
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 93 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (AGPL-3.0-only).Pass
- Actively maintained (last published 1 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1129 tokens (~188/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +15
- Malware scan: unverified → pass ▲ security
- 3 Nov 26 53
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/behaviortrees@0.1.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 93 packages
| Packages resolved | 93 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
convert_tree Convert a behavior tree ~263
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).
| Name | Type | Req | Description |
|---|---|---|---|
| to | string | yes | Target format: behavior3, btcpp-v4 or btcpp-v3 |
| tree | – | yes | The tree: behavior3 JSON: {"title": "...", "root": "<id of the first node under the root>", "nodes": {"<id>": {"name": "<node type>", "title": "<optional label>", "children": ["<id>", ...] (composite… |
No output schema declared.
No examples provided.
create_editor_link Open a tree in the editor ~240
Make a link that opens the tree in the behaviortrees.com editor in the user's browser, auto-laid-out and editable, with no account needed. The tree travels inside the link (the URL fragment), so nothing is uploaded or stored. The tree must validate without errors. Give the user the returned url.
| Name | Type | Req | Description |
|---|---|---|---|
| tree | – | yes | The tree: behavior3 JSON: {"title": "...", "root": "<id of the first node under the root>", "nodes": {"<id>": {"name": "<node type>", "title": "<optional label>", "children": ["<id>", ...] (composite… |
No output schema declared.
No examples provided.
get_example Get an example tree ~76
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.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | – | Example id from the list; omit to list them |
No output schema declared.
No examples provided.
list_node_types List built-in node types ~72
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
read_guide Read a behavior tree guide ~91
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.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | – | Guide slug from the list; omit to list them |
No output schema declared.
No examples provided.
validate_tree Validate a behavior tree ~245
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.
| Name | Type | Req | Description |
|---|---|---|---|
| tree | – | yes | The tree: behavior3 JSON: {"title": "...", "root": "<id of the first node under the root>", "nodes": {"<id>": {"name": "<node type>", "title": "<optional label>", "children": ["<id>", ...] (composite… |
No output schema declared.
No examples provided.
How do I install the Behavior Trees MCP server?
Behavior Trees runs locally as an npm package, launched with npx -y behaviortrees. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · behaviortrees
claude mcp add behaviortrees-behaviortrees -- npx -y behaviortrees
What is the Behavior Trees MCP server?
Behavior Trees is an MCP server listed in the public MCP registry as io.github.behaviortrees/behaviortrees. Validate, convert (behavior3 JSON, BehaviorTree.CPP XML) and open behavior trees in a visual editor. This page covers its npm package (behaviortrees).
Is the Behavior Trees MCP server safe to use?
Behavior Trees scores 68 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Behavior Trees MCP server expose?
Behavior Trees exposes 6 tools: validate_tree, create_editor_link, convert_tree, list_node_types, get_example, read_guide. Their descriptions and schemas cost roughly 987 tokens of context every time the server is loaded.
Is the Behavior Trees MCP server still maintained?
Behavior Trees is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Behavior Trees MCP server under?
Behavior Trees declares the AGPL-3.0-only licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.