MCP Failure Lab

Deterministic fault-injection server for testing how MCP clients handle failures and recover.

Connector by anilloutombam · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)★ 4

Write a review

Chalk Labs

Need help deploying MCP Failure Lab?

Chalk Labs sets up agents like this inside real teams: connected to your tools, tested on your data, with a human in the loop where it matters.

Book a call

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/anilloutombam-mcp-failure-lab

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

About

Deterministic fault-injection server for testing how MCP clients handle failures and recover.

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools: 3 read · 4 write · 0 delete · 4 not yet classified
Secrets: None asked for
Install scripts: None found
Runs as: Node.js package

Tools by what they do 11

Read from the source code; the running server may list different tools.

Read 3 · Look things up without changing anything.

duplicate_response
oversized_response
ping

Write 4 · Create, change, send or run things.

disconnect
invalid_progress
malformed_message
response_after_cancellation

Not yet classified 4 · We could not tell from the name and description.

delay
hang
protocol_ping_liveness
session_loss

Network hosts it talks to 5

github.com · found in code
glama.ai · found in code
mcp-failure-lab.local · found in code
mcplab.dev · found in code
openrouter.ai · found in code

Tools (11)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

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.
invalid_progress
Send one bounded progress-notification fault for this request; requires a client progress token.
malformed_message
Return one deterministic response that violates a selected JSON-RPC rule.
oversized_response
Return a deterministic text payload of exactly sizeBytes UTF-8 bytes (maximum 256 KiB).
ping
Check whether the MCP server is responsive.
protocol_ping_liveness
Send an MCP protocol ping during this in-flight call and apply a bounded liveness policy.
response_after_cancellation
Send a response after this call is cancelled (stdio only).
session_loss
Invalidate this HTTP session during or after the current request.

Signals

Stars: 4
Forks: 0
Open issues: 4
Last commit: Oct 22, 2026 (9 days ago)
Last release: Oct 22, 2026 (9 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.anilloutombam/mcp-failure-lab
Version: 0.13.1
Auth: No auth
Packages: npm mcp-failure-lab
License: MIT
Repository: github.com/anilloutombam/mcp-failure-lab
First seen: Oct 24, 2026
Last checked: Oct 25, 2026
Source: Official MCP Registry github-graphql

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped: 50+; launches shipped
media placements: 500+; media placements
founders on every account: 2; founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

Get MCP Failure Lab running in your business

Tell us what you want to automate. A founder replies within one working day with a plan, not a pitch deck.

Need help deploying MCP Failure Lab?

Call Get help

Cite this page

MCP Failure Lab. Agent Mart. https://agentmart.dev/connectors/anilloutombam-mcp-failure-lab (last updated 2026-10-25)