
An open-source local web UI for connecting to, inspecting, and testing MCP servers over stdio, Streamable HTTP, or SSE. Provides schema-based tool forms, authentication prompts, elicitation, linting, and live JSON-RPC logs.
Prices and medians update for the tier you select.
Ranked by how closely each one matches MCP Master Tester's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.