docs(library): update what-is-an-mcp-server

[icecrasher321]

Content update to apps/sim/content/library/what-is-an-mcp-server: UPDATE the existing library post at apps/sim/content/library/what-is-an-mcp-server/index.mdx. A full replacement article IS supplied below in the article input — it is authoritative for the body. Apply it, but note the following section-by-section intent so you can verify nothing was lost:

• TL;DR — keep as is.
• "What is an MCP server?" — keep as is.
• "What is Model Context Protocol?" — replace the existing anchor-text-only citations with inline citations to Anthropic's Nov 2024 announcement (https://www.anthropic.com/news/model-context-protocol) and the official MCP spec (https://modelcontextprotocol.io/specification/latest).
• NEW section, inserted after "What is Model Context Protocol?": "How an MCP server works". This does not exist on the live page. Insert it in full (tools/resources/prompts primitives, tools/list, tools/call, resources/read, prompts/get, citing the MCP spec inline).
• NEW section, inserted after that: "MCP server examples: GitHub, filesystems, and databases". This does not exist on the live page. Insert it in full — three worked examples (GitHub, filesystem, database), each citing a real primary source (GitHub's official server at https://github.com/github/github-mcp-server, and the MCP reference implementations at https://github.com/modelcontextprotocol/servers twice).
• Comparison table section — keep as is.
• "Using Sim as an MCP client and MCP server" — keep as is.
• FAQ — REPLACE the existing FAQ entirely with the 6 Q&As in the supplied article (MCP server meaning, where to find official docs, is it a real server, MCP vs microservice, does MCP replace APIs, can Sim act as both roles). Put them in frontmatter faq only, verbatim, all 6, and ensure no FAQ heading remains in the body.
• Closing section — keep as is.

CRITICAL PRE-SWAP CHECK: before writing the new body, confirm the GitHub example paragraph in the new "MCP server examples" section reads the real sentence and not a placeholder artifact. If any paragraph in the supplied article looks like a placeholder or truncated artifact rather than real prose, STOP and report it instead of shipping it.

Title is unchanged, so do NOT regenerate the cover — but still run library:covers:check and report the result.

• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Aug 28, 2026 2:27am

[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Re-trigger cubic}

[greptile-apps]

Greptile Summary

This PR replaces the MCP server library article with shorter introductory material, protocol mechanics, practical examples, an updated comparison, and six new FAQ entries.

• Adds explanations of MCP tools, resources, prompts, and their discovery and invocation methods.
• Adds GitHub, filesystem, and database server examples with primary-source links.
• Reworks the Sim client/server guidance, article metadata, and FAQ content.

Confidence Score: 4/5

The PR needs the Markdown link removed or supported in FAQ rendering before merging so the answer and structured data do not expose raw markup.

The article content otherwise fits the library schema, but the new linked FAQ answer is passed through plain-text rendering and JSON-LD serialization unchanged.

Files Needing Attention: apps/sim/content/library/what-is-an-mcp-server/index.mdx

Important Files Changed

Filename	Overview
apps/sim/content/library/what-is-an-mcp-server/index.mdx	Replaces the article and FAQ content; one FAQ answer uses unsupported Markdown link syntax that will render literally.

_{Reviews (1): Last reviewed commit: "docs(library): update what-is-an-mcp-ser..." | Re-trigger Greptile}