Mmcp.market

Nexus Catalyst MCP server

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.

B70/100grade B
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Safety scan
B70/100

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 v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 240ms (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 identityverified namespace with website, no repo4/10

Findings (1)

  • lowNo source repository listedmaint.no-repo
Overall 70/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

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 (70/100). 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, Claude Desktop or Cursor 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 6 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. Compare all Nexus Catalyst alternatives.

Alternatives to Nexus Catalyst

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

All Nexus Catalyst alternatives →
  • Deja Vu
    deja-vu: local memory over the session histories of thirty-three coding agents.
    A
  • State Memory MCP
    Deterministic, persistent graph server for tracking workflow state, decisions, and blockers.
    A
  • Knowl
    Persistent memory for Claude Code, Cursor and Codex. Facts retire when they change.
    A
  • Plur
    Open, local-first engram memory for AI agents: read, correct, delete; shared over MCP.
    A
  • Hypermnesia
    Persistent memory for AI agents — 36 cited neuroscience mechanisms, local-first, hybrid retrieval.
    A

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