Remote MCP Server Tester
Inspect any remote MCP server — quality, cost, and security
Remote MCP Server Tester launched on August 15, 2026 with 1 votes, #11,494 of 23,274 launches that month.
What it does
MCP Server Tester is an open-source, browser-based tool for inspecting remote MCP servers before you wire them into an agent. Paste a URL to list tools, resources, and prompts, plus: - LLM Readiness Score (A–F) for tool-schema quality - Tool-poisoning & rug-pull detection (heuristic) - Per-request token cost estimates - OAuth / auth inspector - Compare mode for two servers - Exportable Markdown / JSON reports with secret redaction Runs locally or as a hosted demo. MIT-licensed, no signup.
A web-based inspector for Model Context Protocol servers: browse tools, resources and prompts, estimate token cost, grade tool definitions A–F, and scan for tool-poisoning risk.
Connect to any MCP server and see what it's actually telling your agent — every tool, every token, every red flag — before you wire it into production. Connects over Streamable HTTP or SSE (with automatic fallback), lists every primitive the server advertises, and keeps a full JSON-RPC history — initialize , tools/list , tools/call , and everything between — so you can see exactly what your agent will see. Estimate token usage with a generic heuristic or exact counts from the Claude API and tiktoken (o200k_base / cl100k_base), then grade the tool set A–F on description quality, type coverage, and schema specificity. Heuristics scan every name, description, and schema for hidden Unicode,…from ytkoka.github.io
Pricing, as stated on its site
Free — Open-source, MIT-licensed tool with no signup required. Available as a self-hosted pip package or free hosted demo.
checked September 2026 · prices change
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