BlenderMCP (naab007/blender_mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 92 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
74/100

BlenderMCP

Connects Blender to AI assistants like Claude for prompt-assisted 3D modeling, scene creation, rendering, and automation.

→ naab007/blender_mcp· listed on glama

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.

How we verified

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Who stands behind it

naab007

Source: Glama

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Install from

Glamanot scored here

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
✅
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.
// 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.
configBLENDER_HOSTHost for the Blender TCP socket
configBLENDER_PORTPort for the Blender TCP socket
configBLENDER_EXE
configIMG_TO_3D_PORTPort for the local TripoSR server
configIMG_TO_3D_MODEL_DIRLocal weights path or HuggingFace hub ID
configIMG_TO_3D_CHUNK_SIZE
configIMG_TO_3D_DEVICEcuda or cpu
// 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

92/92 tools missing one or more hints — get_scene_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_object_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_viewport_screenshot (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +89 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.

Destructive tools are labelled

8 tools perform destructive updates without destructiveHint — get_viewport_screenshot deletes at line 373 (os.remove(temp_path)); capture_viewport_angle deletes at line 1390 (os.remove(temp_path)); capture_contact_sheet deletes at line 1450 (os.remove(out_path))

Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.

Tests exist

No test files found

Add tests that exercise each declared tool.

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.
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commit: fc46af958cb777cd9eb032f38c6237150001a9db
code hash: 19db7a4bdaacaf47773fc2e673895c253210e89b2f529742d8c6bcf37c3b7135
view raw JSON →
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