Unstuck some remote MCPs

Some remote MCPs get stuck when we try to connect to them because the
MCP client also tries to create a persistent SSE connection.

Disable the persistent connection to make init faster for these servers.
This means that we can't receive notifications from remote servers which
is fine for now since we don't listen to these (yet).

More info modelcontextprotocol/go-sdk#633

Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>

Author: rumpl

go.mod

@@ -37,15 +37,15 @@ require (
 	github.com/goccy/go-yaml v1.19.2
 	github.com/golang-jwt/jwt/v5 v5.3.0
 	github.com/google/go-containerregistry v0.20.7
-	github.com/google/jsonschema-go v0.3.0
+	github.com/google/jsonschema-go v0.4.2
 	github.com/google/uuid v1.6.0
 	github.com/gorilla/websocket v1.5.3
 	github.com/junegunn/fzf v0.67.0
 	github.com/k3a/html2text v1.3.0
 	github.com/labstack/echo/v4 v4.15.0
 	github.com/mattn/go-isatty v0.0.20
 	github.com/mattn/go-runewidth v0.0.19
-	github.com/modelcontextprotocol/go-sdk v1.2.0
+	github.com/modelcontextprotocol/go-sdk v1.2.1-0.20260115164613-13488f7da1ed
 	github.com/openai/openai-go/v3 v3.16.0
 	github.com/rivo/uniseg v0.4.7
 	github.com/smacker/go-tree-sitter v0.0.0-20240827094217-dd81d9e9be82

go.sum

@@ -29,8 +29,6 @@ github.com/ProtonMail/go-crypto v1.1.6 h1:ZcV+Ropw6Qn0AX9brlQLAUXfqLBc7Bl+f/DmNx
 github.com/ProtonMail/go-crypto v1.1.6/go.mod h1:rA3QumHc/FZ8pAHreoekgiAbzpNsfQAosU5td4SnOrE=
 github.com/RoaringBitmap/roaring/v2 v2.4.5 h1:uGrrMreGjvAtTBobc0g5IrW1D5ldxDQYe2JW2gggRdg=
 github.com/RoaringBitmap/roaring/v2 v2.4.5/go.mod h1:FiJcsfkGje/nZBZgCu0ZxCPOKD/hVXDS2dXi7/eUFE0=
-github.com/a2aproject/a2a-go v0.3.3 h1:NqGDw2c8hCSW3/9MakeeRpw5yCZUUmW2Y/yINV15GwQ=
-github.com/a2aproject/a2a-go v0.3.3/go.mod h1:8C0O6lsfR7zWFEqVZz/+zWCoxe8gSWpknEpqm/Vgj3E=
 github.com/a2aproject/a2a-go v0.3.4 h1:rSMR/IryydWkIjtxDLZCVgSc3RrVF4eHrycKlBC/WE0=
 github.com/a2aproject/a2a-go v0.3.4/go.mod h1:8C0O6lsfR7zWFEqVZz/+zWCoxe8gSWpknEpqm/Vgj3E=
 github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
@@ -227,8 +225,8 @@ github.com/google/go-containerregistry v0.20.7 h1:24VGNpS0IwrOZ2ms2P1QE3Xa5X9p4p
 github.com/google/go-containerregistry v0.20.7/go.mod h1:Lx5LCZQjLH1QBaMPeGwsME9biPeo1lPx6lbGj/UmzgM=
 github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
 github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/jsonschema-go v0.3.0 h1:6AH2TxVNtk3IlvkkhjrtbUc4S8AvO0Xii0DxIygDg+Q=
-github.com/google/jsonschema-go v0.3.0/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
+github.com/google/jsonschema-go v0.4.2 h1:tmrUohrwoLZZS/P3x7ex0WAVknEkBZM46iALbcqoRA8=
+github.com/google/jsonschema-go v0.4.2/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
 github.com/google/s2a-go v0.1.9 h1:LGD7gtMgezd8a/Xak7mEWL0PjoTQFvpRudN895yqKW0=
@@ -295,8 +293,8 @@ github.com/microcosm-cc/bluemonday v1.0.27 h1:MpEUotklkwCSLeH+Qdx1VJgNqLlpY2KXwX
 github.com/microcosm-cc/bluemonday v1.0.27/go.mod h1:jFi9vgW+H7c3V0lb6nR74Ib/DIB5OBs92Dimizgw2cA=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/modelcontextprotocol/go-sdk v1.2.0 h1:Y23co09300CEk8iZ/tMxIX1dVmKZkzoSBZOpJwUnc/s=
-github.com/modelcontextprotocol/go-sdk v1.2.0/go.mod h1:6fM3LCm3yV7pAs8isnKLn07oKtB0MP9LHd3DfAcKw10=
+github.com/modelcontextprotocol/go-sdk v1.2.1-0.20260115164613-13488f7da1ed h1:v6U7x8QdZFPR+2klPe29iHrRTy35sQSodTxtGcOX7TU=
+github.com/modelcontextprotocol/go-sdk v1.2.1-0.20260115164613-13488f7da1ed/go.mod h1:AnQ//Qc6+4nIyyrB4cxBU7UW9VibK4iOZBeyP/rF1IE=
 github.com/mschoch/smat v0.2.0 h1:8imxQsjDm8yFEAVBe7azKmKSgzSkZXDuKkSq9374khM=
 github.com/mschoch/smat v0.2.0/go.mod h1:kc9mz7DoBKqDyiRL7VZN8KvXQMWeTaVnttLRXOlotKw=
 github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=

pkg/tools/mcp/remote.go

@@ -90,8 +90,9 @@ func (c *remoteMCPClient) Initialize(ctx context.Context, _ *mcp.InitializeReque
 		}
 	case "streamable", "streamable-http":
 		transport = &mcp.StreamableClientTransport{
-			Endpoint:   c.url,
-			HTTPClient: httpClient,
+			Endpoint:             c.url,
+			HTTPClient:           httpClient,
+			DisableStandaloneSSE: true,
 		}
 	default:
 		return nil, fmt.Errorf("unsupported transport type: %s", c.transportType)