KnowledgeGraph MCP Server

MCP server for enabling persistent knowledge storage for Claude through a knowledge graph with multiple storage backends and fuzzy search

→ n-r-w/knowledgegraph-mcp · listed on mcp_so

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mcp.so

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

⚠️

Tests do not pass

Either the test suite is broken or the code regressed. Either way the published behaviour can’t be verified by the publisher’s own tests.

✅

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.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configBUILDKITE

configGITHUB_ACTIONS

configJENKINS_URL

configKNOWLEDGEGRAPH_CONNECTION_STRING— "": "postgresql://postgres:yourpassword@localhost:5432/knowledgegraph"

configKNOWLEDGEGRAPH_DB_PATH

configKNOWLEDGEGRAPH_PROJECT— Project identifier for data isolation (default: knowledgegraph_default_project)

configKNOWLEDGEGRAPH_SEARCH_BATCH_SIZE— Batch size for processing large query arrays (default: 10, max: 50)

configKNOWLEDGEGRAPH_SEARCH_CLIENT_CHUNK_SIZE— Chunk size for processing large datasets in client-side search (default: 1000, max: 10000)

configKNOWLEDGEGRAPH_SEARCH_MAX_CLIENT_ENTITIES— Maximum number of entities to load for client-side search (default: 10000, max: 100000)

configKNOWLEDGEGRAPH_SEARCH_MAX_RESULTS— Maximum number of results to return from database searches (default: 100, max: 1000)

configKNOWLEDGEGRAPH_SQLITE_PATH— Note: SQLite will automatically create the database in [you home folder]/.knowledge-graph/knowledgegraph.db. To use a custom location, add: "": "/path/to/your/database.db"

configKNOWLEDGEGRAPH_STORAGE_OPTIONS

configKNOWLEDGEGRAPH_STORAGE_TYPE— "": "postgresql",

configKNOWLEDGEGRAPH_TEST_CONNECTION_STRING

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// 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/n-r-w-knowledgegraph-mcp-1nee9u)](https://m8ven.ai/mcp/n-r-w-knowledgegraph-mcp-1nee9u)

commit: c95e1136de24ce55d7e9146b4cfba24f90f5221e

code hash: edf6627814252d48ac40347f39f22b7819733475d7df2c9dc42dcbded106cf57

verified: 4/18/2026, 7:07:01 PM

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