EffectFence MCP server

by aurumflux20·io.github.aurumflux20/effectfence·v0.3.0

Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.

A89/100grade A

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Safety scan

A89/100

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

No tool declarations could be read from the package source. They show once the server is installed.

scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it

no findings

Code scan2 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 12 days ago15/15
Maintainer identityregistry namespace matches repository owner6/10

Overall 89/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y effectfence on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add effectfence -- npx -y effectfence

Is EffectFence MCP server safe?: Yes, by our scan: it is graded A (89/100). Read the EffectFence safety report
How do I install EffectFence?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does EffectFence need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is EffectFence maintained?: The last commit was 13 days ago (2026-09-08). The latest release is v0.3.0.