MCP Server Card
A Server Card is a proposed static, discoverable document that describes an MCP server: what it is, who publishes it, and how to reach it, without requiring a client to first open an MCP session. In the agentic web (Step 1, Discover), also known as server-card, mcp-server-card, it is implemented or referenced by Model Context Protocol, Agentic Resource Discovery (ARD).
Discover A Server Card is a proposed static, discoverable document that describes an MCP server: what it is, who publishes it, and how to reach it, without requiring a client to first open an MCP session. The mechanism is defined in SEP-2127, a Model Context Protocol enhancement proposal opened 21 January 2026 and still being updated as of 3 September 2026, which recommends serving the card at a /server-card path relative to the server's own endpoint rather than at a single global well-known location such as /.well-known/mcp; an earlier well-known-path proposal (SEP-1649) was superseded. Static cards intentionally omit the live list of tools, prompts and resources, which a client still has to fetch at runtime. Server cards can be advertised to an ARD registry with the media type application/mcp-server-card+json. As of the SEP's own text, implementation is limited to experimental SDK work and a demo; mainstream client auto-discovery of server cards is not established. Used by: mcp, ard.
Overview
A Server Card is a proposed static, discoverable document that describes an MCP server: what it is, who publishes it, and how to reach it, without requiring a client to first open an MCP session. In the agentic web (Step 1, Discover), also known as server-card, mcp-server-card, it is implemented or referenced by Model Context Protocol, Agentic Resource Discovery (ARD).
Instances
- Coinbase AgentKit and CDP Server Wallets · Observed 2026-10-23 · trust authority
- Kakao PlayMCP Gateway and Toolbox Registry · Observed 2026-10-23 · registry / facilitator
- Mnemom Cryptographic Agent Trust Service · Observed 2026-10-23 · trust authority
- Neuronto Agentic Web Index · Observed 2026-10-23 · registry / facilitator
- Salespeak B2B Buyer Concierge Agent · Observed 2026-10-23 · autonomous agent
- WorkOS AuthKit and Agent Auth · Observed 2026-10-23 · trust authority
- GitHub Copilot Coding Agent · Observed 2026-08-29 · client / harness
- Goose (Block) · Observed 2026-08-29 · client / harness
- IBM BeeAI Multi-Agent Runtime · Observed 2026-08-29 · autonomous agent
- Official MCP Registry · Observed 2026-08-29 · registry / facilitator
- Visual Studio Code (Copilot and MCP Client) · Observed 2026-08-29 · client / harness
- Shopify Agentic Storefronts and Catalog Venue · Observed 2026-08-21 · registry / facilitator
See also
References
- https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2127 (2026-01-21) VERIFIED
- https://agenticresourcediscovery.org/spec/ (2026-08-26) VERIFIED
Frequently asked questions
- What is MCP Server Card?
- A Server Card is a proposed static, discoverable document that describes an MCP server: what it is, who publishes it, and how to reach it, without requiring a client to first open an MCP session. In the agentic web (Step 1, Discover), also known as server-card, mcp-server-card, it is implemented or referenced by Model Context Protocol, Agentic Resource Discovery (ARD).
- Which agentic web standards use MCP Server Card?
- MCP Server Card is used or referenced by Model Context Protocol, Agentic Resource Discovery (ARD). See https://agenticweb.wiki/terms/server-card/ for sourced definitions and verified implementations.
- How is MCP Server Card verified on agenticweb.wiki?
- The MCP Server Card record cites 2 primary specification or implementation sources and was last verified on 2026-10-30.