MCP server cards explained
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An MCP server card is a small JSON file that describes a site's Model Context Protocol server so an agent can find it and learn what it offers. It usually lives at /.well-known/mcp/server-card.json, though the path is not yet standardized. SEP-2127, the open proposal behind the card, now develops it as an experimental MCP extension. As of July 2026 its draft recommends serving the card at the MCP endpoint URL followed by /server-card, with a site-level catalog at /.well-known/mcp/catalog.json,…
1Key Takeaways
- An MCP server card is a small JSON file that describes a site's Model Context Protocol server so an agent can find it and learn what it offers.
- It usually lives at /.well-known/mcp/server-card.json, though the path is not yet standardized.
- SEP-2127, the open proposal behind the card, now develops it as an experimental MCP extension.
- As of July 2026 its draft recommends serving the card at the MCP endpoint URL followed by /server-card, with a site-level catalog at /.well-known/mcp/catalog.json,….
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that an MCP server card is a small JSON file that describes a site's Model Context Protocol server so an agent can find it and learn what it offers.
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