Merge pull request #243 from dgageot/stdio-over-tcp

The remote MCP is stdio over TCP, not proper remote

Author: dgageot

Dockerfile

@@ -45,6 +45,7 @@ FROM scratch AS cross
 COPY --from=builder /binaries .
 
 FROM alpine:3.22@sha256:4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1
+RUN apk add --no-cache curl socat
 ARG TARGETOS TARGETARCH
 COPY --from=builder /binaries/cagent-$TARGETOS-$TARGETARCH /cagent
 RUN mkdir /data

pkg/teamloader/teamloader.go

@@ -305,12 +305,7 @@ func getToolsForAgent(ctx context.Context, a *latest.AgentConfig, parentDir stri
 		case toolset.Type == "mcp" && toolset.Ref != "":
 			mcpServerName := gateway.ParseServerRef(toolset.Ref)
 			if mcpServerURL := os.Getenv(mcp.ENV_DOCKER_MCP_URL_PREFIX + mcpServerName); mcpServerURL != "" {
-				// This MCP server is configured at runtime to be remote. We connect to it directly over http.
-				toolset, err := mcp.NewToolsetRemote(mcpServerURL, "streaming", nil, toolset.Tools, "")
-				if err != nil {
-					return nil, fmt.Errorf("connecting to remote MCP Server: %w", err)
-				}
-				t = append(t, toolset)
+				t = append(t, mcp.NewToolsetCommand("socat", []string{"STDIO", fmt.Sprintf("TCP:mcp-%s:4444", mcpServerName)}, nil, toolset.Tools))
 			} else {
 				t = append(t, mcp.NewGatewayToolset(mcpServerName, toolset.Config, toolset.Tools, envProvider))
 			}