← SELECTED SYSTEMS01 / SYSTEM STUDY

MCPHub
developer tooling.

One place to connect to MCP servers, discover their tools and see exactly what a request returns.

OPEN LIVE SYSTEM ↗INSPECT SOURCE ↗

01 / THE SIGNAL, EXPOSEDPOSTMAN FOR MCP

CLIENT → MCP SERVER → RESPONSEJSON-RPC / ILLUSTRATIVE

ACTIVE METHODtools/list

One exchange, laid open.
Select a method below to inspect its shape.

NO LIVE CONNECTION
LOCAL DEMONSTRATION

EXPLORE AN EXCHANGE

REQUEST{ "jsonrpc": "2.0", "method": "tools/list" }

RESPONSE{ "tools": [{ "name": "lookup", "inputSchema": { … } }] }

SIMPLIFIED DEMONSTRATION / NO SERVER CONNECTED

02 / THE PROBLEM

Every unfamiliar MCP server brings a new integration question: what does it expose, what does it expect, and why did that call fail? Writing another local test harness should not be the first step.

03 / SYSTEM MODEL

Connect → discover → execute → inspect

04 / ARCHITECTURE

Debug the exchange. Inspect the request, run the tool, follow the response.

Next.js / Supabase / MCP SDK

05 / ENGINEERING DECISIONS

Keep tool execution and protocol inspection in the same workflow. The request and response should explain the result, without sending the developer into another tool.

06 / FAILURE SURFACES & TRADEOFFS

Transport and authentication still determine which servers can be reached. Discovering a tool tells you what it exposes; deciding whether to execute it remains a separate responsibility.

07 / RESULT & EVIDENCE

Connect / discover / execute / inspect.

Explore the linked project for implementation evidence. The artwork and interactive sequence illustrate the system model; they are not product screenshots, live execution results or performance measurements.

08 / TECHNOLOGY