MCP.Market

JustOnce MCP server

online · 100% uptime
by justonce.ai·ai.justonce/memory·v1.0.0
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Persistent memory for AI assistants — one shared, OAuth-secured vault for every MCP client.

B77/100grade B
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Safety scan
B77/100

full report

Adoption
New

Little public usage data yet

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

JustOnce tools

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

Public scan report

scanner v0.1.10 · 2026-11-03 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 1206ms (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 JustOnce 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 48,255 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
1,010 ms
faster than 11% of 30,031 servers

Install JustOnce in Claude Code, Cursor or VS Code

claude mcp add --transport http memory https://mcp.justonce.ai
Add to Cursor

JustOnce: common questions

Is JustOnce MCP server safe?
Mostly: it is graded B (77/100). Read the JustOnce safety report
How do I install JustOnce?
It runs remotely at mcp.justonce.ai. 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 JustOnce need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is JustOnce maintained?
The latest release is v1.0.0.
Is JustOnce 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 JustOnce?
Servers from other publishers that do the same job: State Memory MCP server and Knowl MCP server.
How does JustOnce compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,255 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 1,010 ms (faster than 11% of 30,031 servers). Full comparison.

Alternatives to JustOnce

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

  • 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