diff --git a/catalog/folding.go b/catalog/folding.go
index 4991961..85dec0c 100644
--- a/catalog/folding.go
+++ b/catalog/folding.go
@@ -2,6 +2,29 @@ package catalog
 
 const volunteerSciencePluginID = "workflow-plugin-volunteer-science"
 
+func FoldingProviderContract(id, version, configSchemaDigest string) ProviderContract {
+	runtimeProfile := DefaultProviderRuntimeProfile("service-sandboxed-container", ExecutionSandboxedContainer, ProofArtifactHash)
+	runtimeProfile.UpstreamClientConformance = UpstreamClientConformanceShapeOnly
+	return ProviderContract{
+		ProtocolVersion:        Version,
+		ID:                     id,
+		DisplayName:            "Folding@home client",
+		PluginID:               volunteerSciencePluginID,
+		ProviderID:             "folding-at-home",
+		ContractID:             "folding-at-home.client.v1",
+		Version:                version,
+		ConfigSchemaRef:        "schema://providers/workflow-plugin-volunteer-science/folding-at-home/v1",
+		ConfigSchemaDigest:     configSchemaDigest,
+		OperatingModes:         []NetworkOperatingMode{NetworkModeWarmService},
+		WorkloadKinds:          []string{string(WorkloadService)},
+		ExecutorProviders:      []string{"service-sandboxed-container"},
+		ExecutionSecurityTiers: []ExecutionSecurityTier{ExecutionSandboxedContainer},
+		ProofTiers:             []ProofTier{ProofArtifactHash},
+		NetworkModes:           []NetworkMode{NetworkModeDirect},
+		RuntimeContract:        ProviderRuntimeContract{Profiles: []ProviderRuntimeProfile{runtimeProfile}},
+	}
+}
+
 func FoldingUpstreamClientRequirement() ProviderUpstreamClientRequirement {
 	runtime := DefaultProviderRuntimeProfile("service-sandboxed-container", ExecutionSandboxedContainer, ProofArtifactHash)
 	return ProviderUpstreamClientRequirement{
diff --git a/catalog/protocol_aliases.go b/catalog/protocol_aliases.go
index 5d5a32a..729a283 100644
--- a/catalog/protocol_aliases.go
+++ b/catalog/protocol_aliases.go
@@ -5,6 +5,11 @@ import core "github.com/GoCodeAlone/workflow-plugin-compute-core/protocol"
 const (
 	Version = core.Version
 
+	NetworkModeWarmService = core.NetworkModeWarmService
+	NetworkModeDirect      = core.NetworkModeDirect
+
+	WorkloadService = core.WorkloadService
+
 	ExecutionSandboxedContainer = core.ExecutionSandboxedContainer
 	ProofArtifactHash           = core.ProofArtifactHash
 
@@ -13,6 +18,17 @@ const (
 )
 
 type (
+	NetworkOperatingMode = core.NetworkOperatingMode
+	NetworkMode          = core.NetworkMode
+	WorkloadKind         = core.WorkloadKind
+
+	ExecutionSecurityTier = core.ExecutionSecurityTier
+	ProofTier             = core.ProofTier
+
+	ProviderContract        = core.ProviderContract
+	ProviderRuntimeContract = core.ProviderRuntimeContract
+	ProviderRuntimeProfile  = core.ProviderRuntimeProfile
+
 	ProviderUpstreamClientRequirement = core.ProviderUpstreamClientRequirement
 	ProviderUpstreamImagePolicy       = core.ProviderUpstreamImagePolicy
 )
diff --git a/go.mod b/go.mod
index 036c446..d308e54 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.26.0
 
 require (
 	github.com/GoCodeAlone/workflow v0.62.0
-	github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524080452-6589b503feb7
+	github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524205339-f65771b2647b
 )
 
 require (
diff --git a/go.sum b/go.sum
index fd162be..05fd15f 100644
--- a/go.sum
+++ b/go.sum
@@ -16,6 +16,8 @@ github.com/GoCodeAlone/workflow v0.62.0 h1:emFkTomDpVmBcEfw7quRO4V/J4qDsWNx/CrBd
 github.com/GoCodeAlone/workflow v0.62.0/go.mod h1:659GGDrw3QJ7b625y9rf8QhKIpt1VCoEG0MxKu5tGQs=
 github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524080452-6589b503feb7 h1:xO0Gf//l3iDEgaw/7ihn2k4js2djvUNB7fVsxtzsbDM=
 github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524080452-6589b503feb7/go.mod h1:1T6uCpUWPCNk6XPYgKq5CL/7LkD24MphKYsYVzF4jnI=
+github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524205339-f65771b2647b h1:6nW+IJ4l2i7XXqoqYGR7+yAZ3/65fF+/Y63pas3YUKg=
+github.com/GoCodeAlone/workflow-plugin-compute-core v0.0.0-20260524205339-f65771b2647b/go.mod h1:1T6uCpUWPCNk6XPYgKq5CL/7LkD24MphKYsYVzF4jnI=
 github.com/GoCodeAlone/yaegi v0.17.2 h1:WK6Y6e0t1a6U7r+S2dN3CGWW1PizYD3zO0zneToZPxM=
 github.com/GoCodeAlone/yaegi v0.17.2/go.mod h1:z5Pr6Wse6QJcQvpgxTxzMAevFarH0N37TG88Y9dprx0=
 github.com/IBM/sarama v1.47.0 h1:GcQFEd12+KzfPYeLgN69Fh7vLCtYRhVIx0rO4TZO318=
diff --git a/internal/plugin_test.go b/internal/plugin_test.go
index 13b1955..792f184 100644
--- a/internal/plugin_test.go
+++ b/internal/plugin_test.go
@@ -92,3 +92,37 @@ func TestFoldingUpstreamClientRequirement_DocumentsImagePolicy(t *testing.T) {
 		t.Fatalf("folding upstream requirement should include CPU/GPU image-family guidance: %+v", req.ImagePolicy)
 	}
 }
+
+func TestFoldingProviderContract_DocumentsWarmServiceRuntime(t *testing.T) {
+	contract := catalog.FoldingProviderContract(
+		"folding-at-home-client-v1",
+		"v1.0.0",
+		"sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
+	)
+	if err := contract.Validate(); err != nil {
+		t.Fatalf("folding provider contract invalid: %v", err)
+	}
+	if contract.ProtocolVersion != catalog.Version ||
+		contract.PluginID != "workflow-plugin-volunteer-science" ||
+		contract.ProviderID != "folding-at-home" ||
+		contract.ContractID != "folding-at-home.client.v1" ||
+		contract.Version != "v1.0.0" {
+		t.Fatalf("folding provider contract identity: %+v", contract)
+	}
+	if contract.OperatingModes[0] != catalog.NetworkModeWarmService ||
+		contract.WorkloadKinds[0] != string(catalog.WorkloadService) ||
+		contract.ExecutorProviders[0] != "service-sandboxed-container" ||
+		contract.NetworkModes[0] != catalog.NetworkModeDirect {
+		t.Fatalf("folding provider contract runtime envelope: %+v", contract)
+	}
+	if len(contract.RuntimeContract.Profiles) != 1 {
+		t.Fatalf("runtime profiles: %+v", contract.RuntimeContract)
+	}
+	runtime := contract.RuntimeContract.Profiles[0]
+	if runtime.ExecutorProvider != "service-sandboxed-container" ||
+		runtime.ExecutionSecurityTier != catalog.ExecutionSandboxedContainer ||
+		runtime.ProofTier != catalog.ProofArtifactHash ||
+		runtime.UpstreamClientConformance != catalog.UpstreamClientConformanceShapeOnly {
+		t.Fatalf("folding runtime profile: %+v", runtime)
+	}
+}