MCP.Market

Nexus Catalyst MCP server

online · 100% uptime
by nexus-catalyst.com·com.nexus-catalyst/nexus-catalyst·v1.0.1
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Cross-tool persistent memory and context for AI assistants over MCP.

B77/100grade B
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Safety scan
B77/100

full report

Adoption
New

Little public usage data yet

Reviews

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If you have run it, two minutes of your experience saves the next person an afternoon.

Nexus Catalyst tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.10 · 2026-10-03 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 297ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenanceno repository listed3/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10

Findings (1)

  • lowNo source repository listedmaint.no-repo
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Nexus Catalyst compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 50% of 48,243 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
335 ms
faster than 48% of 30,027 servers

Install Nexus Catalyst in Claude Code, Cursor or VS Code

claude mcp add --transport http nexus-catalyst https://mcp.nexus-catalyst.com
Add to Cursor

Nexus Catalyst: common questions

Is Nexus Catalyst MCP server safe?
Mostly: it is graded B (77/100). Read the Nexus Catalyst safety report
How do I install Nexus Catalyst?
It runs remotely at mcp.nexus-catalyst.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Nexus Catalyst need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Nexus Catalyst maintained?
The latest release is v1.0.1.
Is Nexus Catalyst up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Nexus Catalyst?
Servers from other publishers that do the same job: Deja Vu MCP server, State Memory MCP server and Knowl MCP server.
How does Nexus Catalyst compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,243 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 335 ms (faster than 48% of 30,027 servers). Full comparison.

Alternatives to Nexus Catalyst

Same job from other publishers: the closest match first, then the best rated.

  • Deja Vu
    deja-vu: local memory over the session histories of forty-three coding agents.
    A
  • State Memory MCP
    Persistent workflow graph server tracking tasks, decisions, spatial entities, and blockers.
    A
  • Knowl
    Persistent memory for AI agents, for code, research and everyday life. Stale facts retire.
    A