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Best MCP Server Testing Tools: Protocol, OAuth & Agent Evals

This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.

A Model Context Protocol (MCP) server can pass its unit tests and still fail in a release. The OAuth flow can break on a newer client, a client can render the tool result differently, or an agent can call the wrong tool. Each failure sits in a different layer: protocol, authorization, client compat…

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  1. 2026-10-20 08:36 · DEV Community — AI
    Best MCP Server Testing Tools: Protocol, OAuth & Agent Evals

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