Edge Case Museum

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Edge Case Museum MCP — "Your code works. Except for these wonderfully terrible inputs."

4tools
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free tier50 calls/day

Tools

edge_cases_find

Edge Case Museum: describe what you are implementing in plain words ("username uniqueness", "parse a CSV upload", "store and add up money amounts", "schedule a reminder in the user's timezone", "sort

No parameters required.

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edge_case_get

Edge Case Museum: one exhibit in full by id (from edge_cases_find or edge_cases_browse): the assumption it breaks, the exact input, what goes wrong and why, every repro (executed Python/Node.js repros

No parameters required.

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edge_cases_browse

Edge Case Museum: browse the collection. With no arguments, lists the categories (unicode, datetime, float-money, sorting, filenames, parsing, integers, names-addresses) with counts and their most com

No parameters required.

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edge_cases_test_file

Edge Case Museum: one runnable test file (pytest for python, node:test for javascript) bundling the inputs from the exhibits relevant to what you are implementing, as parametrized cases you point at y

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash
curl -X POST https://gateway.pipeworx.io/edge-case-museum/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash
curl -X POST https://gateway.pipeworx.io/edge-case-museum/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"edge_cases_find","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("edge_cases_find", {});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("edge case museum mcp — "your code works");