🔌

MCP Server Tester

v0.1

MCP Server URL

Transport

Auth Method

Token Counting

Provider

API Key

Model

⚠ tiktoken counts tokens in the tool definition JSON text. The overhead from OpenAI's internal function-calling format expansion is not included, so actual consumption may be higher. Claude's count_tokens API (which accepts tools directly) is more accurate.

Recent Connections

🔍

Enter an MCP server URL and click Connect & Fetch Tools

Lists available tools and estimates token consumption per request

Copied ✓

Browser Authentication