MCP.Market

Arca MCP server

online · 96% uptime
by mcp.arca.build·build.arca.mcp/arca-mcp-server·v0.0.1
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Arca is a private data vault where your AI stores your structured data, semantic memory and skills.

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.

Arca tools

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

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 260ms (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 Arca 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
96%
of our recent checks; the typical remote server answers 100%
Response time
211 ms
faster than 62% of 30,031 servers

Install Arca in Claude Code, Cursor or VS Code

claude mcp add --transport http arca-mcp-server https://mcp.arca.build
Add to Cursor

Arca: common questions

Is Arca MCP server safe?
Mostly: it is graded B (77/100). Read the Arca safety report
How do I install Arca?
It runs remotely at mcp.arca.build. 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 Arca need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Arca maintained?
The latest release is v0.0.1.
Is Arca up?
96% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Arca compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,255 servers); uptime 96% (of our recent checks; the typical remote server answers 100%); response time 211 ms (faster than 62% of 30,031 servers). Full comparison.