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Model Context Protocol projectv2.1.0Tested (smoke test)

MCP reference servers: what’s new in v2.1.0 and our verdict

The MCP project's collection of reference servers.

Official site

Release Ruler for MCP reference servers: marked at its Tested release date on the timeline of every AI model we track.

At a glance

Evidence
Tested (smoke test)
Released
Oct 25, 2026
Last verified
Oct 25, 2026
Pricing
Official page, dated
Best for
MCP servers

Evidence and ranking

Evidence behind this verdict

  1. Sources read1 cited source, latest fetched Oct 25, 2026. (done)
  2. Facts re-checkedLast verified Oct 25, 2026. (done)
  3. Run by usSmoke test on Oct 25, 2026 (scope below). (done)

Passed Test log result: Passed. Read the log

Where we rank it (editorial)

Listed here but not yet ranked. Ranks are editorial picks, not benchmark scores.

Pricing: Open-source server; the service it connects to may have its own costs. (checked 2026-10-25)

Our verdict

The MCP project's collection of reference servers.

Good for

  • Learning MCP server patterns
  • Starting points for custom servers

Skip if

  • You need a polished vendor-supported integration

Tested. Tested 2026-10-25 (America/Chicago). MCP Memory server answered over stdio in 284 ms cold (v1.0.0, Node 20) and 147 ms (v2.0.0, Node 24); median call 0.9 to 0.6 ms. The MCP Fetch server 2026.10.24 refused to fetch a local test page by default (a deliberate loopback block); with --allow-private-ips it fetched it in 698.3 ms median. MCP Sequential Thinking server answered over stdio in 271 ms cold (v1.0.0, Node 20) and 159 ms (v2.0.0, Node 24); median call 0.8 to 0.4 ms. MCP Filesystem server answered over stdio in 279 ms cold (v1.0.0, Node 20) and 187 ms (v2.0.1, Node 24); median call 0.8 to 1.0 ms. MCP Everything (reference) server answered over stdio in 356 ms cold (v1.0.0, Node 20) and 252 ms (v2.0.1, Node 24); median call 0.5 to 0.4 ms. The MCP Git server 2026.10.19 started in 512 ms, listed 12 tools and answered git_status in 3.2 ms median. The MCP Time server 2026.10.19 started in 483 ms and answered get_current_time in 0.8 ms median. Test environment: Linux x86_64 virtual machine (Debian 13), 8 vCPU, 15 GiB RAM, no GPU; no vendor account, login or API key. Not tested: Remote (HTTP) transport, authentication and concurrent clients: only local stdio with one client was measured; Large payloads: calls used tiny inputs, so these latencies are protocol and process overhead, not throughput; Anything about answer quality: no model was involved in the latency numbers; These are single smoke-test runs; it is not a benchmark. The machine was shared with other jobs. These are smoke tests, not a benchmark. Full log: /tests/mcp-server-memory. Full log: /tests/mcp-server-fetch. Full log: /tests/mcp-server-sequential-thinking. Full log: /tests/mcp-server-filesystem. Full log: /tests/mcp-server-everything. Full log: /tests/mcp-server-git. Full log: /tests/mcp-server-time.

Full test log with exact commands, versions and raw output: MCP Everything (reference) server 1.0.0 (Node 20) / 2.0.1 (Node 24): our test log, MCP Fetch server mcp-fetch 2026.10.24: our test log, MCP Filesystem server 1.0.0 (Node 20) / 2.0.1 (Node 24): our test log, MCP Git server mcp-git 2026.10.19: our test log, MCP Memory server 1.0.0 (Node 20) / 2.0.0 (Node 24): our test log, MCP Sequential Thinking server 1.0.0 (Node 20) / 2.0.0 (Node 24): our test log, MCP Time server mcp-time 2026.10.19: our test log.

Evidence
Tested (smoke test, 2026-10-25, no LLM involved). A smoke test is not a benchmark.
What we ran
MCP Memory server answered over stdio in 284 ms cold (v1.0.0, Node 20) and 147 ms (v2.0.0, Node 24); median call 0.9 to 0.6 ms. The MCP Fetch server 2026.10.24 refused to fetch a local test page by default (a deliberate loopback block); with --allow-private-ips it fetched it in 698.3 ms median. MCP Sequential Thinking server answered over stdio in 271 ms cold (v1.0.0, Node 20) and 159 ms (v2.0.0, Node 24); median call 0.8 to 0.4 ms. MCP Filesystem server answered over stdio in 279 ms cold (v1.0.0, Node 20) and 187 ms (v2.0.1, Node 24); median call 0.8 to 1.0 ms. MCP Everything (reference) server answered over stdio in 356 ms cold (v1.0.0, Node 20) and 252 ms (v2.0.1, Node 24); median call 0.5 to 0.4 ms. The MCP Git server 2026.10.19 started in 512 ms, listed 12 tools and answered git_status in 3.2 ms median. The MCP Time server 2026.10.19 started in 483 ms and answered get_current_time in 0.8 ms median.
Model used
none (no LLM was involved in this test)
Environment
Linux x86_64 virtual machine (Debian 13), 8 vCPU, 15 GiB RAM, no GPU; no vendor account, login or API key
Not tested
Remote (HTTP) transport, authentication and concurrent clients: only local stdio with one client was measured; Large payloads: calls used tiny inputs, so these latencies are protocol and process overhead, not throughput; Anything about answer quality: no model was involved in the latency numbers; These are single smoke-test runs; it is not a benchmark. The machine was shared with other jobs.
Date
(America/Chicago)

Best for

Key facts

The modelcontextprotocol/servers repository holds the MCP project's reference servers. Its license file says the project is moving from MIT to Apache-2.0, with docs under CC-BY-4.0; v2.1.0 was released Oct 25, 2026.

  • License: MIT to Apache-2.0 transition (per LICENSE file)
  • Platforms: Node.js and Python servers
  • Pricing model: Free and open source
  • Free tier: Free
  • Paid plans: None listed
  • GitHub: modelcontextprotocol/servers: 91,561 stars on 2026-10-25, last push 2026-10-25
  • Latest release we saw: v2.1.0, 2026-10-25
  • How to start: Pick a server from the repository and follow its README.
  • v2.1.0 (2026-10-25): the newest release listed on the official page or repository when we read it on 2026-10-25.

How to set it up: Get started with MCP reference servers

These steps come from the vendor's own pages as read on 2026-10-25. We ran MCP reference servers on 2026-10-25; the test log lists what was and was not covered.

  1. Get access

    Pick a server from the repository and follow its README.

  2. Check the limits and costs first

    Free. Open-source server; the service it connects to may have its own costs.

Pros and cons

Pros

  • Reference implementations
  • Very large following

Cons

  • Reference code, not production services
  • Our test was one small task on a local 3B model; it does not show behaviour with hosted models or larger jobs

Alternatives and comparisons

  • GitHub MCP Server: GitHub's official MCP server for repos, issues and pull requests.
  • FastMCP: The Pythonic way to build MCP servers and clients.
  • Figma MCP server: Figma's own MCP server that gives coding agents access to design files.
  • Firecrawl: Web data API: search, scrape and crawl for AI agents.

FAQ

What is MCP reference servers?

The modelcontextprotocol/servers repository holds the MCP project's reference servers. Its license file says the project is moving from MIT to Apache-2.0, with docs under CC-BY-4.0; v2.1.0 was released Oct 25, 2026.

Is MCP reference servers free?

Free. Open-source server; the service it connects to may have its own costs. Checked 2026-10-25; prices change, so confirm on the vendor's page.

What license is MCP reference servers under?

Its license: MIT to Apache-2.0 transition (per LICENSE file). Read from the project's own pages on 2026-10-25.

Sources

Last verified · Agentic Weekly

Guides for MCP reference servers

Latest news about MCP reference servers

  • Figma MCP server: Figma's own MCP server that gives coding agents access to design files.
  • Firecrawl: Web data API: search, scrape and crawl for AI agents.
  • Context7: Up-to-date, version-specific library docs served to coding agents.

How to cite this page

Agentic Weekly, "MCP reference servers v2.1.0: what's new, verdict & setup", last updated 2026-10-25, https://theagenticweekly.com/tools/mcp-servers

Keep the Reported or Tested label when you quote a verdict. Plain-text version: https://theagenticweekly.com/tools/mcp-servers.md. More for AI assistants: /ai, /tools.json, /llms.txt.