MCP Servers (Reference)
https://github.com/modelcontextprotocol/servers
Official collection of reference Model Context Protocol servers maintained by the MCP project — currently Everything, Fetch, Filesystem, Git, Memory, Sequential Thinking and Time; earlier servers such as GitHub, Google Drive and PostgreSQL were moved to the servers-archived repo. Substrate for the MCP-memory ecosystem.
Active · Verified 2026-10-27 · fresh as of 2026-10-27 · 42 cited facts, 1 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Reference MCP server collection repo fix
- Tier
- T1
- Latest release
- v2.0.1 (2026-10-25) registry fix
- License
- Apache-2.0 (transitioning from MIT; contributions without relicensing consent remain MIT; docs CC-BY-4.0) repo fix
- Pricing
- searched not found fix
- Funding
- searched not found fix
- Freshness
- 2026-10-27 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source repo fix
- SDK languages
- python, typescript repo fix
- Protocols
- mcp-server repo fix
- Developer activity
- OpenRank 11.66 (12-mo avg 16.7) · 124 participants — 2026-09 third-party fix
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
Anthropic-maintained reference MCP server implementations across filesystem, GitHub, Slack, Postgres, Brave Search.
Technical surface
- API surface
- searched not found
- Backend storage
- not applicable — not a memory product
- Deployment
- Self-hosted only — run locally via npx (TypeScript) or uvx/pip (Python)
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- searched not found
- MCP
- yes — reference MCP server implementations
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to MCP Servers (Reference) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other agent frameworks (no first-party memory layer) in the catalog, ranked by inbound references.
- Model Context Protocol (MCP spec) T1
Anthropic-introduced open protocol (Nov 2024) for connecting LLMs to data sources and tools. Donated by Anthropic to the Linux Foundation's Agentic AI Foundation (announced 2025-12-09); now governed as Model Context Protocol, a Series of LF Projects, LLC. Supported across Claude, ChatGPT, VS Code, Cursor and many other clients.
- LangChain (framework) T1
Dominant Python/JS framework for LLM apps — tool calling, agents, retrievers, runnables. Memory is one component (LangMem cross-listed); the framework itself is the product.
- Vercel AI SDK T1
Vercel's TypeScript LLM SDK — streaming, tool calls, structured outputs, agents. Dominant framework for Next.js LLM apps.
- LlamaIndex (framework) T1
Data framework for LLM apps — connectors, indices, query engines, agents, workflows. Memory is one of many subsystems (LlamaIndex Memory cross-listed).
- OpenAI Agents SDK T1
OpenAI's official Python framework for agents — handoffs, guardrails, tracing built in. Successor to OpenAI Swarm (experimental); officially supported.
- LangGraph (orchestration) T1
LangChain's stateful graph runtime for agents — explicit state, persistence, time-travel debugging, human-in-the-loop. Memory is one persistence target (LangGraph Persistence cross-listed).
Sources (41 cited facts, 1 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Reference MCP server collection repo
- What it does & what's distinct Official collection of reference Model Context Protocol servers maintained by the MCP pr… repo
- Claims / benefits Anthropic-maintained reference MCP server implementations across filesystem, GitHub, Sla… repo
- Created 2024 repo
- Latest release v2.0.1 (2026-10-25) registry
- License Apache-2.0 (transitioning from MIT; contributions without relicensing consent remain MIT… repo
- GitHub modelcontextprotocol/servers — ~92k stars, last commit 2026-10 repo
- Deployment Self-hosted only — run locally via npx (TypeScript) or uvx/pip (Python) repo
- Code/weights release Active — last commit 2026-05 · 85,528★ repo
- MCP support yes — reference MCP server implementations repo
- Runtimes TypeScript, Python repo
- obs-langsmith no repo
- obs-datadog no repo
- obs-helicone no repo
- obs-weave no repo
- obs-langfuse no repo
- obs-arize no repo
- obs-custom Reference server collection — observability is a host-app concern repo
- cost-token-budget no repo
- cost-prompt-caching no repo
- cost-semantic-caching no repo
- cost-batching no repo
- cost-model-routing no repo
- cost-streaming-only no repo
- cost-observability-cost-attribution no repo
- eval-langsmith-evals no repo
- eval-braintrust no repo
- eval-weights-and-biases-agent no repo
- eval-helicone-evals no repo
- eval-custom-test-harness no repo
- eval-human-loop no repo
- eval-production-traffic-replay no repo
- commit-trajectory [{"ym":"2025-07","cum":3232},{"ym":"2025-08","cum":3449},{"ym":"2025-09","cum":3617},{"y… repo
- architecture-deployment-locus local repo
- licensing-bucket open-source repo
- positioning-platform-vs-product platform repo
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":248,"as_of":"2026-09","openrank_12mo":16.7,"openrank_current":11.66,"partici… third-party
- sdk-languages python,typescript repo
- protocol-support mcp-server repo
- maturity alpha repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-27
- License “MIT” → “Apache-2.0 (transitioning from MIT; contributions without relicensing consent remain MIT; docs CC-BY-4.0)” source
- Latest release first recorded as “v2.0.1 (2026-10-25)” source
- Deployment first recorded as “Self-hosted only — run locally via npx (TypeScript) or uvx/pip (Python)” source
- MCP support first recorded as “yes — reference MCP server implementations” source