Coding & Development
Remote MCP Server Tester
2h agoRemote MCP Server Tester is a web‑based tool for inspecting Model Context Protocol (MCP) servers. It lets users connect to any MCP server, browse its tools, resources, and prompts, measure fetch latency, estimate token usage with multiple providers, score the quality of tool definitions, detect tool‑poisoning risks and rug‑pulls, export detailed reports, and compare two servers side‑by‑side. It supports various authentication methods, multiple transports, and remembers recent connections. The tool can be run via a live demo or installed locally with Python 3.11+ via pip.
Tool InspectionResource InspectionPrompt InspectionToken CountingFetch TimingAuth InspectorLLM Readiness ScoreTool Poisoning Risk ScanExport ReportCompare ModeMultiple Auth MethodsDynamic Client RegistrationProtocol Message HistoryTransport SupportConnection History
Key Capabilities
01
Tool Inspection
Lists all tools with name, description, parameters, and input schema.
02
Resource Inspection
Shows all resources with URI, name, mime‑type and allows reading their contents.
03
Prompt Inspection
Displays prompts with arguments and lets users fill arguments to render messages.
04
Token Counting
Provides four token‑counting providers: generic estimate, Claude API, OpenAI GPT‑4o/o‑series, and OpenAI GPT‑4/GPT‑3.5.
05
Fetch Timing
Shows MCP server fetch time, round‑trip time, and per‑phase timing breakdown.
06
Auth Inspector
Displays the authentication method, sent headers, decoded token claims, and OAuth endpoints; caches SSO tokens.
07
LLM Readiness Score
Grades tool definitions A–F across five dimensions and highlights improvement areas.
08
Tool Poisoning Risk Scan
Heuristic detection of hidden Unicode, prompt‑injection, credential‑exfiltration hints, HTML comments, and rug‑pull changes.
09
Export Report
Downloads a self‑contained Markdown or JSON report with secret redaction, generated client‑side.
10
Compare Mode
Connects to two servers simultaneously to compare performance, token usage, and quality scores.
11
Multiple Auth Methods
Supports none, Bearer Token, OAuth2 Client Credentials, SSO (Authorization Code + PKCE), and custom headers.
12
Dynamic Client Registration
Automatically registers an OAuth client via RFC 7591 without needing a client ID.
13
Protocol Message History
Collapsible view of all MCP JSON‑RPC calls made during the session.
14
Transport Support
Uses streamable HTTP (MCP 2025) and SSE with automatic fallback.
15
Connection History
Remembers the last eight connections in the browser.
Use Cases
Performance BenchmarkingMeasure fetch latency and token‑counting efficiency across different MCP servers.DevOps and performance engineers
LLM Integration TestingValidate tool definitions, token usage, and readiness scores before deploying LLM‑driven applications.AI/ML developers and product teams
API DebuggingInspect tools, resources, and prompts on MCP servers to troubleshoot integration issues.Backend developers and API engineers
Competitive AnalysisCompare two MCP servers side‑by‑side to evaluate feature completeness and quality.Product managers and market analysts
Security AuditsDetect hidden malicious content, prompt‑injection, and rug‑pulls in MCP servers.Security engineers and compliance teams
Update History
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