diff --git a/src/server/__tests__/trace-capture.test.ts b/src/server/__tests__/trace-capture.test.ts
index 290523b2..5fe9e134 100644
--- a/src/server/__tests__/trace-capture.test.ts
+++ b/src/server/__tests__/trace-capture.test.ts
@@ -565,6 +565,52 @@ describe('trace capture service', () => {
     }
   })
 
+  test('captures direct provider headers when fetch input is a Request', async () => {
+    const originalFetch = globalThis.fetch
+    const originalTraceEnv = process.env.CC_HAHA_TRACE_API_CALLS
+    process.env.CC_HAHA_TRACE_API_CALLS = '1'
+    try {
+      globalThis.fetch = (async () => new Response(
+        JSON.stringify({ id: 'msg-request-input', content: [{ type: 'text', text: 'ok' }] }),
+        {
+          status: 200,
+          headers: { 'Content-Type': 'application/json' },
+        },
+      )) as typeof fetch
+
+      const traceFetch = createDumpPromptsFetch('agent-direct-request-input', {
+        traceSessionId: 'session-direct-request-input',
+        querySource: 'test_query',
+      })
+      const requestInput = new Request('https://sub2api.example.test/v1/messages', {
+        method: 'POST',
+        headers: {
+          Authorization: 'Bearer sk-direct-header-secret',
+          'Content-Type': 'application/json',
+        },
+      })
+
+      await traceFetch(requestInput, {
+        method: 'POST',
+        body: JSON.stringify({ model: 'gpt-5.5', messages: [{ role: 'user', content: 'request input' }] }),
+      })
+
+      const trace = await waitForTrace(
+        'session-direct-request-input',
+        (snapshot) => Boolean(snapshot.calls[0]?.response) && snapshot.events.length >= 2,
+      )
+      expect(trace.summary.apiCalls).toBe(1)
+      expect(trace.calls[0].request.headers.authorization).toBe('[redacted]')
+      expect(trace.calls[0].request.headers['content-type']).toBe('application/json')
+      expect(trace.calls[0].request.body.preview).toContain('request input')
+      expect(trace.calls[0].response.body.preview).toContain('msg-request-input')
+    } finally {
+      globalThis.fetch = originalFetch
+      if (originalTraceEnv === undefined) delete process.env.CC_HAHA_TRACE_API_CALLS
+      else process.env.CC_HAHA_TRACE_API_CALLS = originalTraceEnv
+    }
+  })
+
   test('captures direct provider fetch failures without changing thrown behavior', async () => {
     const originalFetch = globalThis.fetch
     const originalTraceEnv = process.env.CC_HAHA_TRACE_API_CALLS
diff --git a/src/services/api/dumpPrompts.ts b/src/services/api/dumpPrompts.ts
index be0bfb94..8f44fa7e 100644
--- a/src/services/api/dumpPrompts.ts
+++ b/src/services/api/dumpPrompts.ts
@@ -266,6 +266,15 @@ export function createDumpPromptsFetch(
           })(),
         }
       : init
+    const traceRequest = timestamp
+      ? new Request(input, requestInit)
+      : undefined
+    const traceRequestUrl = traceRequest?.url ?? requestUrl
+    const traceRequestMethod = traceRequest?.method ?? init?.method ?? 'POST'
+    const traceRequestHeaders = (traceRequest?.headers ?? requestInit?.headers) as
+      | Headers
+      | Record<string, string>
+      | undefined
 
     const traceModel = extractModelFromRequestBody(traceRequestBody)
     const traceCallId = timestamp && traceEnabled && !isProviderProxyTrace
@@ -283,9 +292,9 @@ export function createDumpPromptsFetch(
         status: 'pending',
         startedAt: timestamp,
         request: {
-          method: init?.method ?? 'POST',
-          url: requestUrl,
-          headers: requestInit?.headers as Headers | Record<string, string> | undefined,
+          method: traceRequestMethod,
+          url: traceRequestUrl,
+          headers: traceRequestHeaders,
           bodySnapshot: createRequestPendingSnapshot(traceRequestBody),
         },
         metadata: {
@@ -303,7 +312,7 @@ export function createDumpPromptsFetch(
         severity: 'info',
         title: 'API call started',
         metadata: {
-          url: requestUrl,
+          url: traceRequestUrl,
         },
       })
     }
@@ -328,9 +337,9 @@ export function createDumpPromptsFetch(
           completedAt,
           durationMs: Date.now() - traceStartedAtMs,
           request: {
-            method: init?.method ?? 'POST',
-            url: requestUrl,
-            headers: requestInit?.headers as Headers | Record<string, string> | undefined,
+            method: traceRequestMethod,
+            url: traceRequestUrl,
+            headers: traceRequestHeaders,
             bodySnapshot: createRequestPendingSnapshot(traceRequestBody),
           },
           error: err,
@@ -351,7 +360,7 @@ export function createDumpPromptsFetch(
           title: 'API call failed',
           message: err instanceof Error ? err.message : String(err),
           metadata: {
-            url: requestUrl,
+            url: traceRequestUrl,
             ...(aborted ? { aborted: true } : {}),
           },
         })
@@ -372,9 +381,9 @@ export function createDumpPromptsFetch(
           model: traceModel,
           startedAt: timestamp,
           request: {
-            method: init?.method ?? 'POST',
-            url: requestUrl,
-            headers: requestInit?.headers as Headers | Record<string, string> | undefined,
+            method: traceRequestMethod,
+            url: traceRequestUrl,
+            headers: traceRequestHeaders,
             body: traceRequestBody,
           },
         }
@@ -420,7 +429,7 @@ export function createDumpPromptsFetch(
             title: 'API call completed',
             metadata: {
               status: response.status,
-              url: requestUrl,
+              url: traceRequestUrl,
             },
           })
           return
@@ -455,7 +464,7 @@ export function createDumpPromptsFetch(
             message: abortError.message,
             metadata: {
               status: response.status,
-              url: requestUrl,
+              url: traceRequestUrl,
               durationMs,
               aborted: true,
             },
@@ -472,7 +481,7 @@ export function createDumpPromptsFetch(
           message: captureFailure instanceof Error ? captureFailure.message : String(captureFailure),
           metadata: {
             status: response.status,
-            url: requestUrl,
+            url: traceRequestUrl,
           },
         })
         // The clone shares the upstream source with the SDK's branch, so a