Ontosphere MCP Server

by ThHanke• 255•• Not scanned yet•Claim this listing•Request removal
Database Managementfair datagraph editorjson ldknowledge graphlinked data

Browser-based RDF/ontology knowledge graph editor — load RDF from files, URLs or SPARQL endpoints; author nodes and edges on the canvas; run OWL-RL reasoning; apply multi-algorithm layout and clustering. AI-native via MCP tool surface and relay bridge. Fully client-side, no backend required.

Ontosphere is an open-source mcp server by ThHanke, written mainly in TypeScript, with 255 GitHub stars. Its code was last updated Oct 16, 2026.

aboutREADMEsecurityreviews

What Ontosphere can touch

  • Run shell commandsNot scanned yet
  • Run dynamic codeNot scanned yet
  • Read or write filesNot scanned yet
  • Read environment and secretsNot scanned yet
  • Control a web browserLikely, from its own description
  • Connect to databasesNot scanned yet
  • Read or send messagesNot scanned yet
  • Touch money or tradingNot scanned yet
  • Connect to the internetNot scanned yet

"Not seen" means our checks did not find it, and the tool may still do it. See the scan policy.

Before you install Ontosphere

Ontosphere has not been scanned by AgenticMart yet. It has no open-source license we can detect, so it can only be scanned once the maintainer claims it. Until then, here is what it can likely access and what to check before you install it.

What it can access

  • An MCP server is a program your AI app starts and talks to. A local one runs with your user's permissions: it can see the files, environment variables and network your account can.
  • Based on its description and topics, it likely needs to control a web browser (visit sites, fill in and submit forms).
  • Based on its description and topics, it likely needs to read and write files on your machine.

Before you install

  1. Run it in a separate browser profile without your logged-in accounts.
  2. Point it at one project folder, never your home directory.
  3. Pin the version you reviewed instead of always installing the latest release.
  4. Read the tool list or scripts before the first run, and keep approval prompts on for actions that write, send or delete.
  • Maintained by ThHanke on GitHub, 255 stars and 32 forks. Popularity is not proof of safety.
  • Last code change: Oct 16, 2026.
  • No open-source license detected: check the repository before using it commercially.
Maintainer? Claim it and scan it nowWhat our scan checks

Ontosphere is an open-source mcp server by ThHanke, written mainly in TypeScript. Browser-based RDF/ontology knowledge graph editor — load RDF from files, URLs or SPARQL endpoints; author nodes and edges on the canvas; run OWL-RL reasoning; apply multi-algorithm layout and clustering. AI-native via MCP tool surface and relay bridge. Fully client-side, no backend required.

At a glance

Stars
255
Forks
32
Language
TypeScript
License
None found
Created
Sep 2025
Last update
Oct 16, 2026
Type
MCP Server
Price
Free

Topics

fair-datagraph-editorjson-ldknowledge-graphlinked-datamcpmodel-context-protocolontologyowlrdfreactodiareasoningsemantic-websparqlturtlevisualization

Questions about Ontosphere

What is Ontosphere?

Browser-based RDF/ontology knowledge graph editor — load RDF from files, URLs or SPARQL endpoints; author nodes and edges on the canvas; run OWL-RL reasoning; apply multi-algorithm layout and clustering. AI-native via MCP tool surface and relay bridge. Fully client-side, no backend required.

Who maintains Ontosphere?

Ontosphere is maintained by ThHanke on GitHub (ThHanke/ontosphere). AgenticMart lists it from public repository data.

Is Ontosphere safe to use?

Ontosphere has not been scanned by AgenticMart yet. It has no open-source license we can detect, so it can only be scanned once the maintainer claims it. Until then, here is what it can likely access and what to check before you install it.

What license does Ontosphere use?

No standard license was detected. Check the repository before using it commercially.

Ontosphere alternatives

View more →

Similar mcp servers in Database Management, ranked by GitHub stars. Compare licence, recent activity and scan status before you choose.

NameStarsLicenceLast updatedScan
Ontosphere (this page)
ThHanke
255None foundOct 16, 2026Not scanned yet
Codebase Memory MCP
DeusData
48kMITNov 1, 2026Scanned, see report
Xerj
xerj-org
19kApache-2.0Nov 1, 2026Scanned, no flagged issues
MCP Toolbox
googleapis
17kApache-2.0Nov 1, 2026Scanned, no flagged issues
Nightingale
ccfos
13kApache-2.0Oct 30, 2026Scanned, no flagged issues
Dbhub
bytebase
3.8kMITOct 26, 2026Scanned, no flagged issues