Diagrams (byteoverdev/diagrams-mcp) is an MCP server listed on the M8ven Trust Index. It scores 67 out of 100, grade C. It declares 9 tools. No publisher has claimed this listing.

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C
Limited view
67/100

Diagrams

Generate cloud architecture diagrams, flowcharts, and sequence diagrams programmatically.

→ byteoverdev/diagrams-mcp· listed on pulsemcp

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.

How we verified

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Who stands behind it

byteoverdev

Source: PulseMCP · also listed on Glama

Is this your MCP?

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Install from

PulseMCPnot scored hereGlamanot 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
✅
9 tools verified — handlers match their declared behaviour
9 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.
// 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.
configDIAGRAMS_IMAGE_STORE_DIROptional file-backed temporary image store directory
configDIAGRAMS_INLINE_DEFAULT
configBASE_URLOptional public base URL used when returning absolute download links
configMERMAID_PUPPETEER_CONFIG
configPLANTUML_JAR
configDIAGRAMS_RENDERER_MODEremote Makes the facade use the HTTP renderer service
configDIAGRAMS_RENDERER_URLRenderer base URL, for example http://diagrams-renderer.railway.internal:8080
configRENDERER_HOST0.0.0.0 RENDERER_PORT=8001 diagrams-renderer-server
configRENDERER_PORTRENDERER_HOST=0.0.0.0 =8001 diagrams-renderer-server
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

All four hints declared on every tool

9/9 tools missing one or more hints — list_providers (missing: destructiveHint, openWorldHint); list_services (missing: destructiveHint, openWorldHint); list_nodes (missing: destructiveHint, openWorldHint), +6 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

7/9 tool handlers declare input schemas (78%)

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

Tool handlers catch errors

Only 4/9 tool handlers wrap calls in try/catch (44%)

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

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

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 5 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/byteoverdev/diagrams-mcp)](https://m8ven.ai/mcp/byteoverdev/diagrams-mcp)
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commit: 2c54b4f21efc39607684115f82464913920441d3
code hash: 6dd2a3e949c823e073502d2cb7fc4f9d92b1760848845f5fa54fbad4e0167b61
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