mnemon (nousergon/mnemon) is an MCP server listed on the M8ven Trust Index. It scores 69 out of 100, grade C. It declares 19 tools. No publisher has claimed this listing.

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C
Limited view
69/100

mnemon

A self-hosted MCP server that provides a unified memory vault across MCP clients with hybrid BM25+vector search.

→ nousergon/mnemon· 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.

How we verified

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Who stands behind it

nousergon

Source: Glama

Is this your MCP?

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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.
🔐
You'll be asked for 1 credential: MNEMON_LOCAL_TOKEN
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.
configMNEMON_VAULT_DIR
configMNEMON_ALLOW_LOCAL_STORE
🔐 secretMNEMON_LOCAL_TOKEN
configMNEMON_REMOTE_URL
configMNEMON_CLIENT_CONFIG_ROOT
configMNEMON_S3_BUCKETexport =my-mnemon-vault
configFASTEMBED_CACHE_DIR
configMNEMON_STANDING_TIER_ENABLED
configMNEMON_STANDING_TIER_FILE
configMNEMON_MODEL_DIR
configMNEMON_NLI_ONNX_VARIANT
configMNEMON_ALLOWED_HOSTS
configMNEMON_CAPTURE_ATTENTION_ENABLED
configMNEMON_S3_PREFIX
configMNEMON_VAULT_NAME
configMNEMON_UPGRADE_SETTLE_SECONDS
configMNEMON_PROD_APP_NAMES
configMNEMON_FLY_ENDPOINT_OVERRIDE
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// 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

19/19 tools missing one or more hints — memory_search (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); memory_get (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); memory_timeline (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +16 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

12/19 tool handlers declare input schemas (63%)

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

Tool handlers catch errors

Only 5/19 tool handlers wrap calls in try/catch (26%)

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 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/nousergon/mnemon)](https://m8ven.ai/mcp/nousergon/mnemon)
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commit: 811ad12cbea2ae6c942d15982a6fc5d91602cb9e
code hash: 1882dedf17a28099433ea703b46033188df3ac24e1e9ad4880fac0c2f328d7e8
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