Failure Lab MCP server

by anilloutombam·io.github.anilloutombam/mcp-failure-lab·v0.10.0

A chaos-engineering and resilience-testing toolkit for Model Context Protocol servers.

A92/100grade A

What users say

No reviews yet

Safety scan

A92/100

Adoption

Growing

0 stars123 downloads/wk

Reviews

Nobody has reviewed Failure Lab yet.

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

write = sends, deletes, buys or posts

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

delay
Delay a successful MCP response to test client timeout behavior.
disconnect
Close the MCP transport before this request can receive a response.
duplicate_response
Return the same JSON-RPC response twice for this request.
hang
Never respond unless the MCP request is cancelled.
malformed_message
Return one deterministic response that violates a selected JSON-RPC rule.
ping
Check whether the MCP server is responsive.

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

no findings

Code scan53 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 0 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 92/100. 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 mcp-failure-lab on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add mcp-failure-lab -- npx -y mcp-failure-lab

Is Failure Lab MCP server safe?: Yes, by our scan: it is graded A (92/100). Read the Failure Lab safety report
How do I install Failure Lab?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Failure Lab need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Failure Lab maintained?: The last commit was in the last day (2026-09-19). The latest release is v0.10.0.
What can I use instead of Failure Lab?: Servers from other publishers that do the same job: Mockserver MCP server and Ceraph MCP server.

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

Mockserver
Mock, record/replay, verify and chaos-test any HTTP, REST, gRPC or LLM dependency over MCP.
not reviewed
Established
A
Ceraph
MCP server for agent-driven React Native and Expo development and mobile testing
not reviewed
Growing
B