diff --git a/.changeset/breezy-baboons-crash.md b/.changeset/breezy-baboons-crash.md
new file mode 100644
index 000000000..b1ef06260
--- /dev/null
+++ b/.changeset/breezy-baboons-crash.md
@@ -0,0 +1,7 @@
+---
+"braintrust": patch
+"@braintrust/openai-agents": patch
+"@braintrust/temporal": patch
+---
+
+fix: Add span provenance for temporal and openai agents sdk
diff --git a/integrations/openai-agents-js/src/index.ts b/integrations/openai-agents-js/src/index.ts
index e40b95173..167660f5f 100644
--- a/integrations/openai-agents-js/src/index.ts
+++ b/integrations/openai-agents-js/src/index.ts
@@ -279,24 +279,20 @@ export class OpenAIAgentsTraceProcessor {
     // Detect parent span from current execution context
     let span: BraintrustSpan;
     const current = currentSpan();
+    const spanArgs = {
+      name: trace.name,
+      type: SpanTypeAttribute.TASK,
+      [Symbol.for("braintrust.spanInstrumentationName")]: "openai-agents",
+    };
 
     if (current && current !== NOOP_SPAN) {
       // Create as child of current span
-      span = current.startSpan({
-        name: trace.name,
-        type: SpanTypeAttribute.TASK,
-      });
+      span = current.startSpan(spanArgs);
     } else {
       // No parent span available, create as root
       span = this.logger
-        ? this.logger.startSpan({
-            name: trace.name,
-            type: SpanTypeAttribute.TASK,
-          })
-        : startSpan({
-            name: trace.name,
-            type: SpanTypeAttribute.TASK,
-          });
+        ? this.logger.startSpan(spanArgs)
+        : startSpan(spanArgs);
     }
 
     span.log({
@@ -620,6 +616,7 @@ export class OpenAIAgentsTraceProcessor {
       const childSpan = parentSpan.startSpan({
         name: spanNameFromAgents(span),
         type: spanTypeFromAgents(span),
+        [Symbol.for("braintrust.spanInstrumentationName")]: "openai-agents",
       });
       traceData.childSpans.set(span.spanId, childSpan);
     }
diff --git a/integrations/temporal-js/src/interceptors.ts b/integrations/temporal-js/src/interceptors.ts
index 70706872d..285230c59 100644
--- a/integrations/temporal-js/src/interceptors.ts
+++ b/integrations/temporal-js/src/interceptors.ts
@@ -151,6 +151,7 @@ class BraintrustActivityInterceptor implements ActivityInboundCallsInterceptor {
     }
 
     const span = braintrust.startSpan({
+      [Symbol.for("braintrust.spanInstrumentationName")]: "temporal",
       name: `temporal.activity.${info.activityType}`,
       spanAttributes: { type: "task" },
       parent,
diff --git a/integrations/temporal-js/src/sinks.ts b/integrations/temporal-js/src/sinks.ts
index bd2967ca4..5ae0099be 100644
--- a/integrations/temporal-js/src/sinks.ts
+++ b/integrations/temporal-js/src/sinks.ts
@@ -40,6 +40,7 @@ export function createBraintrustSinks(): InjectedSinks<BraintrustSinks> {
           workflowSpanId?: string,
         ) => {
           const span = braintrust.startSpan({
+            [Symbol.for("braintrust.spanInstrumentationName")]: "temporal",
             name: `temporal.workflow.${info.workflowType}`,
             spanAttributes: { type: "task" },
             parent: parentContext,
diff --git a/js/src/span-origin.ts b/js/src/span-origin.ts
index 0c1afb303..755fc43f5 100644
--- a/js/src/span-origin.ts
+++ b/js/src/span-origin.ts
@@ -41,6 +41,7 @@ export const INSTRUMENTATION_NAMES = {
   OPENROUTER_AGENT: "openrouter-agent",
   PI_CODING_AGENT: "pi-coding-agent",
   STRANDS_AGENT_SDK: "strands-agent-sdk",
+  TEMPORAL: "temporal",
   TYPESAFE: "typesafe",
   VOYAGEAI: "voyageai",
   ELEVENLABS: "elevenlabs",