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Oct 16, 2025
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Document STDIO on k8s limitation #238

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Document STDIO on k8s limitation
eleftherias Oct 15, 2025
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Update docs/toolhive/guides-k8s/run-mcp-k8s.mdx
eleftherias Oct 15, 2025
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10 changes: 9 additions & 1 deletion docs/toolhive/guides-k8s/run-mcp-k8s.mdx
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Expand Up @@ -65,9 +65,17 @@ flowchart LR
Proxy -->|Attaches/STDIO| MCP
```

:::info[STDIO Transport Limitation]

MCP servers using STDIO transport support only a single client connection at a
time. If you need to support multiple users or concurrent client connections,
use SSE (Server-Sent Events) or Streamable HTTP transport instead.

:::

### Streamable HTTP and SSE transport flow

For MCP servers using Server-Sent Events (SSE) or Stremable HTTP transport, the
For MCP servers using Server-Sent Events (SSE) or Streamable HTTP transport, the
proxy creates both a pod and a headless service. This allows direct HTTP/SSE or
HTTP/Streamable HTTP communication between the proxy and MCP server while
maintaining network isolation and service discovery.
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