Integrate with Model Context Protocol

Everything MCP Server is the official Model Context Protocol reference and test server, built to exercise prompts, resources, and tools across the full range of MCP features - useful for verifying that an MCP client correctly implements the protocol. Its tool set demonstrates capabilities like sending messages back to the client, simulating multi-step operations with progress notifications, sending prompts to an LLM with token limits, and referencing typed resources.

Use this when developing or testing an MCP client and you need a known-good server that exercises a broad set of protocol features - message passing, progress steps, LLM sampling requests, different message types (error/success/debug), optional image content, and resource references - to confirm your client handles them correctly. It is not a functional integration for any real service; it exists to validate MCP plumbing, not to provide business value on its own.

Parameters exposed across its demonstration tools include: message (string to echo back), duration/steps (simulate a multi-step operation with progress notifications), prompt/maxTokens (send a prompt to an LLM with a token cap), messageType (enum: error/success/debug, for testing message-type handling), includeImage (boolean, demonstrates image content in responses), resourceId (1-100, references a typed resource), plus example enum parameters like color and pets for testing typed/enum argument handling.

Developers building or testing MCP client implementations who need a reference server that exercises the protocol's prompt, resource, tool, and progress-notification features end to end.