polybridge-mcp (Camille7585/polybridge-mcp) is an MCP server listed on the M8ven Trust Index. It scores 56 out of 100, grade D. It declares 14 tools. No publisher has claimed this listing.

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D
Caution
56/100

polybridge-mcp

Connect Blender, n8n, and MCP with Polybridge MCP for fast 3D automation and workflow control

→ Camille7585/polybridge-mcp· listed on github_repo_search

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

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Who stands behind it

Camille7585

Source: github_repo_search

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Install from

GitHub

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
⚠️
Known vulnerabilities in dependencies: 4 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 3 credentials: ANTHROPIC_API_KEY, GEMINI_API_KEY, OPENAI_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes14 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

blender_create_object

Create a new 3D object in the current Blender scene.

blender_apply_material

Apply a material (color and basic surface properties) to an existing object.

blender_render_scene

Render the current Blender scene and return the result as a base64 PNG image.

blender_execute_script

Execute an arbitrary Blender Python script. Use for advanced operations not covered by other tools.

blender_list_objects

Return a list of all objects currently in the Blender scene.

fs_read_file

Read the contents of a file. Only files inside the configured allowed directories can be read.

fs_list_directory

List all files and subdirectories inside a directory.

n8n_list_workflows

List all workflows in the n8n instance with their names, IDs, and active status.

n8n_execute_workflow

Execute a specific n8n workflow by its ID. Optionally pass input data to the workflow.

n8n_get_execution

Get the result and status of a workflow execution by its execution ID.

n8n_activate_workflow

Enable or disable an n8n workflow.

notion_create_page

Create a new Notion page inside a parent page or database.

notion_append_text

Append a text paragraph to an existing Notion page.

notion_read_page

Read the title and text content of a Notion page.

// known CVEs in dependencies4 high1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.15.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.15.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.15.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highws@8.18.0GHSA-96hv-2xvq-fx4p

ws: Memory exhaustion DoS from tiny fragments and data chunks

lowws@8.18.0GHSA-58qx-3vcg-4xpx

ws: Uninitialized memory disclosure

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
🔐 secretANTHROPIC_API_KEY
🔐 secretGEMINI_API_KEY
🔐 secretOPENAI_API_KEY
configPOLYBRIDGE_CONFIG
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

14/14 tools missing one or more hints — blender_create_object (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); blender_apply_material (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); blender_render_scene (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +11 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool test coverage

6/14 tools referenced in tests (43%)

Write tests that reference each tool by name so every tool has at least one test.

Production dependencies are patched

0 critical, 4 high severity in production deps — @modelcontextprotocol/sdk@1.15.0 (high), @modelcontextprotocol/sdk@1.15.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: bc942150faf3ee2691d97d2452e87bc9b85e7505
code hash: dcef7e35b14743b6a8ca1f16736c15706253b46bd7fbbb20e357cf75207b9f64
view raw JSON →
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