Nano Banana MCP Server (plemio/nanobanana-mcp-server) is an MCP server listed on the M8ven Trust Index. It scores 69 out of 100, grade C. It declares 4 tools. No publisher has claimed this listing.

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C
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69/100

Nano Banana MCP Server

An MCP server for AI-powered image generation using Google Gemini models with intelligent automatic model selection, supporting multiple resolutions and aspect ratios.

→ plemio/nanobanana-mcp-server· listed on glama

Limited view. Automated analysis covers part of this stack. Findings reflect what we verified. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

Limited view: static analysis for Python is partially covered.

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Who stands behind it

plemio

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
✅
4 tools verified — handlers match their declared behaviour
3 read-only tools verified — handlers contain no write/delete/exec
✅
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 2 credentials: GEMINI_API_KEY, GOOGLE_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// 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.
configLOG_LEVELINFO # DEBUG, INFO, WARNING, ERROR
configLOG_FORMATstandard # standard, json, detailed
configRETURN_FULL_IMAGE
configNANOBANANA_AUTH_METHODNano Banana supports two authentication methods via :
🔐 secretGEMINI_API_KEY1. API Key (api_key): Uses . Best for local development and simple deployments.
🔐 secretGOOGLE_API_KEY
configGCP_PROJECT_IDyour-project-id
configGOOGLE_CLOUD_PROJECT
configGCP_REGIONglobal (default; required for Gemini 3 Pro Image and NB2. Use us-central1 only for the legacy 2.5 Flash Image model.)
configGOOGLE_CLOUD_LOCATION
configIMAGE_OUTPUT_DIR3. Default location - Uses or ~/nanobanana-images:
configGEMINI_BASE_URL
configFASTMCP_TRANSPORT
configFASTMCP_HOST
configFASTMCP_PORT
configFASTMCP_MASK_ERRORS
configNANOBANANA_MODELauto # Options: flash, nb2, pro, auto (default: auto → nb2)
// quality suggestions

All four hints declared on every tool

4/4 tools missing one or more hints — generate_image (missing: destructiveHint, idempotentHint); maintenance (missing: destructiveHint, idempotentHint); show_output_stats (missing: destructiveHint, idempotentHint, openWorldHint), +1 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 inputs are validated

3/4 tool handlers declare input schemas (75%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

3/4 tool handlers wrap calls in try/catch (75%)

Wrap each tool handler body in try/catch and return a structured error response.

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.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/plemio/nanobanana-mcp-server)](https://m8ven.ai/mcp/plemio/nanobanana-mcp-server)
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commit: d888045a13d7e1f4fec48aa7eec337b0b865389b
code hash: 578d373225596a970767041b49cdb19878def0f8c7238d8e314f3396a2a9da5f
view raw JSON →
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