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mcp-assert

Testing standard for MCP servers: lint, test and fuzz over real transport

PlatformWebfreeglobal

mcp-assert is a free, open-source testing standard for Model Context Protocol servers. It's a single Go binary that lints servers against 14 rules, runs tests and fuzzing over real stdio, SSE or HTTP transport, and checks 18 assertion types defined in YAML — reported to have found 4,794 schema issues across 55 real MCP servers.

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Developer ToolsMCP Testing

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