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Relay MCP server

by mhcoen·io.github.mhcoen/mcp-relay·v1.2.4·4 stars
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MCP relay server for Claude Desktop <-> Claude Code communication

B75/100grade B
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Safety scan
B75/100

full report

Adoption
New

4 stars

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

Relay tools (3, 2 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • relay_clearwrite action

    Delete all messages from the relay buffer.

  • relay_fetch

    Fetch messages from the other Claude client.

  • relay_sendwrite action

    Send a message to the other Claude client.

Public scan report

scanner v0.1.10 · 2026-10-01 · same rubric, same numbers if you re-run it

no findings
  • Code scan4 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 246 days ago4/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Relay compares

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

Safety score
75/100
higher than 45% of 48,255 servers
Tools
3
the typical server has 7
Tools that change things
67%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
4
more than 82% of 28,688 servers

What its tools let an agent do: 1 read · 2 change

Install Relay in Claude Code, Cursor or VS Code

claude mcp add mcp-relay -- uvx mcp-server-relay
Add to Cursor

Relay: common questions

Is Relay MCP server safe?
Mostly: it is graded B (75/100). Read the Relay safety report
How do I install Relay?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Relay need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Relay maintained?
The last commit was 280 days ago (2026-01-28). The latest release is v1.2.4.
How does Relay compare with other MCP servers?
safety score 75/100 (higher than 45% of 48,255 servers); tools 3 (the typical server has 7); tools that change things 67% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.