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KnowledgeGraph MCP Server

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

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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.
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.
// known CVEs in dependencies2 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.0.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.1GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

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// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
configKNOWLEDGEGRAPH_CONNECTION_STRING"": "postgresql://postgres:yourpassword@localhost:5432/knowledgegraph"
configKNOWLEDGEGRAPH_PROJECTProject identifier for data isolation (default: knowledgegraph_default_project)
configKNOWLEDGEGRAPH_SEARCH_BATCH_SIZEBatch size for processing large query arrays (default: 10, max: 50)
configKNOWLEDGEGRAPH_SEARCH_CLIENT_CHUNK_SIZEChunk size for processing large datasets in client-side search (default: 1000, max: 10000)
configKNOWLEDGEGRAPH_SEARCH_MAX_CLIENT_ENTITIESMaximum number of entities to load for client-side search (default: 10000, max: 100000)
configKNOWLEDGEGRAPH_SEARCH_MAX_RESULTSMaximum number of results to return from database searches (default: 100, max: 1000)
configKNOWLEDGEGRAPH_SQLITE_PATHNote: 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",
// 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: 6/26/2026, 9:53:50 AM
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