How should kg-mcp be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this mcp.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

Crawler Summary

kg-mcp answer-first brief

OpenClaw agent: kg-mcp Knowledge Graph MCP Server (WIP) A Model Context Protocol (MCP) HTTP server for intelligent exploration and querying of RDF knowledge graphs with semantic search capabilities. Overview This server provides tools for exploring SPARQL endpoints and RDF data sources via HTTP. It combines traditional SPARQL querying with semantic search using embeddings, allowing LLMs and agents to discover and navigate complex knowledge Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

Freshness

Last checked 2/22/2026

Best For

Contract is available with explicit auth and schema references.

Not Ideal For

kg-mcp is not ideal for teams that need stronger public trust telemetry, lower setup complexity, or more explicit contract coverage before production rollout.

Evidence Sources Checked

editorial-content, capability-contract, runtime-metrics, public facts pack

Card Facts Snapshot Contract Trust

Claim this agent

Agent DossierGitHubSafety: 100/100

kg-mcp

MCPverified

Public facts

Change events

Artifacts

Freshness

Feb 22, 2026

Verifiededitorial-content1 verified compatibility signal

Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

Schema refs publishedTrust evidence available

Trust score

Unknown

Compatibility

MCP

Freshness

Feb 22, 2026

Vendor

Janingohaas

Artifacts

Benchmarks

Last release

1.0.0

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Published capability contract available. No trust telemetry is available yet. Last updated 2/24/2026.

View Source

Setup snapshot

git clone https://github.com/JanIngoHaas/mcp-graph.git

1
Setup complexity is MEDIUM. Standard integration tests and API key provisioning are required before connecting this to production workloads.
2
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content

Vendor (1)

Vendor

Janingohaas

profilemedium

Observed Feb 24, 2026Source link Provenance

Compatibility (2)

Protocol compatibility

MCP

contracthigh

Observed Feb 24, 2026Source link Provenance

Auth modes

mcp, api_key

contracthigh

Observed Feb 24, 2026Source link Provenance

Artifact (1)

Machine-readable schemas

OpenAPI or schema references published

contracthigh

Observed Feb 24, 2026Source link Provenance

Security (1)

Handshake status

UNKNOWN

trustmedium

Observed unknownSource link Provenance

Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium

Observed Apr 15, 2026Source link Provenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB MCP

Extracted files

Examples

Snippets

Languages

typescript

Executable Examples

bash

npm install
npm run init    # Initialize embedding model
npm run build   # Compile TypeScript

bash

export SPARQL_ENDPOINT="https://dbpedia.org/sparql"
export ENDPOINT_ENGINE="fallback"
npm run start

json

{
  "mcpServers": {
    "kg-mcp": {
      "url": "http://localhost:3000/mcp",
      "transport": "http"
    }
  }
}

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB MCP

Docs source

GITHUB MCP

Editorial quality

ready

Full README

Knowledge Graph MCP Server (WIP)

A Model Context Protocol (MCP) HTTP server for intelligent exploration and querying of RDF knowledge graphs with semantic search capabilities.

Overview

This server provides tools for exploring SPARQL endpoints and RDF data sources via HTTP. It combines traditional SPARQL querying with semantic search using embeddings, allowing LLMs and agents to discover and navigate complex knowledge graphs intuitively.

Key Features

HTTP Streamable Transport: MCP server accessible via HTTP with SSE support for real-time notifications
SPARQL Query Execution: Direct querying of RDF knowledge graphs via SPARQL endpoints
Boolean Search: Search for RDF entities using boolean query syntax
URI Inspection: Detailed exploration of RDF classes and properties with domain/range analysis
Path Discovery: Find relationship paths between entities
Citation System: Generate verifiable citation links for RDF triples

MCP Tools

Once running, the server provides these tools to MCP clients:

query - Execute SPARQL queries against the knowledge graph
search - Search for RDF entities using boolean queries
inspect - Unified inspection tool that automatically detects URI type and shows appropriate information
path - Discover relationship paths between two entities
verify - Verify RDF triples via pattern matching (simple fact-checking)
cite - Generate citation links for verified triples (for user reference)

Installation

npm install
npm run init    # Initialize embedding model
npm run build   # Compile TypeScript

Running the Server

export SPARQL_ENDPOINT="https://dbpedia.org/sparql"
export ENDPOINT_ENGINE="fallback"
npm run start

The server will start on http://localhost:3000/mcp by default.

Environment Variables

Required

SPARQL_ENDPOINT: SPARQL endpoint URL for RDF data exploration

Optional

PUBLIC_URL: Public URL for the server (default: http://localhost:3000)
- Used for generating citation links
- Example: https://your-domain.com
MCP_PORT: HTTP server port (default: 3000)
ENDPOINT_ENGINE: SPARQL engine type - qlever or fallback (default: fallback)
SPARQL_TOKEN: Authentication token for SPARQL endpoint (sent as Bearer token)
LOG_FILE: Path to log file (logs to stdout if not set)
LOG_LEVEL: Logging level - debug, info, warn, error (default: info)
EMBEDDING_BATCH_SIZE: Batch size for embedding processing (default: 32)
CUSTOM_PREFIXES: Custom RDF URI prefixes (format: prefix:<uri>,prefix2:<uri2>)
- Example: dblp:<https://dblp.org/rdf/schema#>,mydata:<http://example.com/data/>

MCP Client Configuration

To connect an MCP client to this server, configure it to use the HTTP transport:

{
  "mcpServers": {
    "kg-mcp": {
      "url": "http://localhost:3000/mcp",
      "transport": "http"
    }
  }
}

Note: The exact configuration format depends on your MCP client. The server uses the MCP Streamable HTTP transport protocol.

Citation System

The cite tool generates unique, resolvable URLs for RDF triples:

Verify facts using the verify tool
Cite them using the cite tool to get a URL
Users can click the citation link to view the raw RDF triples in Turtle format

Citation URLs are session-scoped and use human-readable word IDs. Wordlist source: https://github.com/david47k/top-english-wordlists (top_english_words_lower_20000.txt).

Architecture

HTTP Server: Express-based server with MCP Streamable HTTP transport
Session Management: Multiple concurrent client sessions supported
SSE Resumability: Server-Sent Events with automatic reconnection support
Citation Database: In-memory storage per server instance

Scripts

npm run build - Compile TypeScript to JavaScript
npm run start - Build and start the HTTP server
npm run test - Run tests
npm run init - Initialize (one-time setup - downloads embedding model, etc.,)

License

MIT

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

Verifiedcapability-contract

Endpoints

Dossier API Snapshot API Contract API Trust API

Contract coverage

Status

ready

Auth

mcp, api_key

Streaming

Yes

Data region

global

Protocol support

MCP: verified

Requires: mcp, lang:typescript, streaming

Forbidden: none

Guardrails

Operational confidence: medium

Contract is available with explicit auth and schema references.

Trust confidence is not low and verification freshness is acceptable.

Protocol support is explicitly confirmed in contract metadata.

Invocation examples

curl -s "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/snapshot"

curl -s "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract"

curl -s "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media

No screenshots, media assets, or demo links are available.

Related Agents

Neighboring agents from the same protocol and source ecosystem for comparison and shortlist building.

Self-declaredprotocol-neighbors

GITLAB_AI_CATALOGgitlab-mcp

Rank

A Model Context Protocol (MCP) server for GitLab

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_PUBLIC_PROJECTSgitlab-mcp

Rank

A Model Context Protocol (MCP) server for GitLab

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_AI_CATALOGrmcp-openapi

Rank

Expose OpenAPI definition endpoints as MCP tools using the official Rust SDK for the Model Context Protocol (https://github.com/modelcontextprotocol/rust-sdk)

Traction

No public download signal

Freshness

Updated 2d ago

MCP

GITLAB_AI_CATALOGrmcp-actix-web

Rank

An actix_web backend for the official Rust SDK for the Model Context Protocol (https://github.com/modelcontextprotocol/rust-sdk)

Traction

No public download signal

Freshness

Updated 2d ago

MCP

Machine Appendix

Contract JSON

{
  "contractStatus": "ready",
  "authModes": [
    "mcp",
    "api_key"
  ],
  "requires": [
    "mcp",
    "lang:typescript",
    "streaming"
  ],
  "forbidden": [],
  "supportsMcp": true,
  "supportsA2a": false,
  "supportsStreaming": true,
  "inputSchemaRef": "https://github.com/JanIngoHaas/mcp-graph#input",
  "outputSchemaRef": "https://github.com/JanIngoHaas/mcp-graph#output",
  "dataRegion": "global",
  "contractUpdatedAt": "2026-02-24T19:45:40.050Z",
  "sourceUpdatedAt": "2026-02-24T19:45:40.050Z",
  "freshnessSeconds": 4439696
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/snapshot",
    "contractUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "trustUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/trust"
  },
  "curlExamples": [
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/snapshot\"",
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract\"",
    "curl -s \"https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "MCP"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_MCP",
      "generatedAt": "2026-04-17T05:00:36.985Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "MCP",
      "type": "protocol",
      "support": "supported",
      "confidenceSource": "contract",
      "notes": "Confirmed by capability contract"
    },
    {
      "key": "cli",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    }
  ],
  "flattenedTokens": "protocol:MCP|supported|contract capability:cli|supported|profile"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "MCP",
    "href": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:40.050Z",
    "isPublic": true
  },
  {
    "factKey": "auth_modes",
    "category": "compatibility",
    "label": "Auth modes",
    "value": "mcp, api_key",
    "href": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:40.050Z",
    "isPublic": true
  },
  {
    "factKey": "schema_refs",
    "category": "artifact",
    "label": "Machine-readable schemas",
    "value": "OpenAPI or schema references published",
    "href": "https://github.com/JanIngoHaas/mcp-graph#input",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:45:40.050Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Janingohaas",
    "href": "https://github.com/JanIngoHaas/mcp-graph",
    "sourceUrl": "https://github.com/JanIngoHaas/mcp-graph",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/trust",
    "sourceUrl": "https://xpersona.co/api/v1/agents/mcp-janingohaas-mcp-graph/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]