DarkMatter MCP Server
by darkmatter-hubio.github.darkmatter-hub/mcp-serverv0.3.1
Tamper-evident records of AI agent decisions. Verify offline, or publish a proof link.
context tax
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security
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cold start
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freshness
Deprecated17d ago
Install DarkMatter MCP server
Install in Claude Code
claude mcp add darkmatterhub -e DARKMATTER_API_KEY='<darkmatter-api-key>' -- npx -y @darkmatterhub/mcp-serverInstall in Cursor
{
"mcpServers": {
"darkmatterhub": {
"command": "npx",
"args": [
"-y",
"@darkmatterhub/mcp-server"
],
"env": {
"DARKMATTER_API_KEY": "<darkmatter-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"darkmatterhub": {
"command": "npx",
"args": [
"-y",
"@darkmatterhub/mcp-server"
],
"env": {
"DARKMATTER_API_KEY": "<darkmatter-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"darkmatterhub": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@darkmatterhub/mcp-server"
],
"env": {
"DARKMATTER_API_KEY": "<darkmatter-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"darkmatterhub": {
"command": "npx",
"args": [
"-y",
"@darkmatterhub/mcp-server"
],
"env": {
"DARKMATTER_API_KEY": "<darkmatter-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| DARKMATTER_API_KEY | — | yes | Optional. Publishes each record to DarkMatter and returns a verification URL. Without it, records stay on local disk and verify offline. |
| DARKMATTER_SHARE | — | — | Optional. Set to 'true' to make published records readable by anyone holding the link. Off by default. |
| DARKMATTER_API_URL | — | — | Optional. Override the API host. Defaults to https://darkmatterhub.ai. |
| DARKMATTER_MCP_STORE_DIR | — | — | Optional. Directory for local record storage. |
Freshness
Deprecated — last maintenance signal 17d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-09-23 · 17d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-20 · 51d ago · official registry · v0.3.1
FAQ
›How do I install the DarkMatter MCP server in Claude Code?
Run: claude mcp add darkmatterhub -e DARKMATTER_API_KEY='<darkmatter-api-key>' -- npx -y @darkmatterhub/mcp-server. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does DarkMatter require an API key?
Yes. It expects DARKMATTER_API_KEY, of which 1 is a secret.
›Can I use DarkMatter as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is DarkMatter in the official MCP registry?
Yes, as io.github.darkmatter-hub/mcp-server.