diff --git a/packages/opencode/src/altimate/telemetry/error-detail.ts b/packages/opencode/src/altimate/telemetry/error-detail.ts
index a424f6c52a..52e3d5713e 100644
--- a/packages/opencode/src/altimate/telemetry/error-detail.ts
+++ b/packages/opencode/src/altimate/telemetry/error-detail.ts
@@ -400,6 +400,19 @@ export function describeToolError(raw: string) {
   }
 }
 
+/**
+ * A running tool closed as interrupted after the session's own abort signal fired
+ * (Stop/Esc, dispose) is a requested cancellation, already reported as the session's
+ * "aborted" outcome, not a tool failure. Interruptions the session did not request
+ * (stream error, stall) are still fingerprinted.
+ */
+export function isRequestedInterruption(
+  state: { status: string; metadata?: Record<string, unknown> } | undefined,
+  sessionAborted: boolean,
+): boolean {
+  return sessionAborted && state?.status === "error" && state.metadata?.interrupted === true
+}
+
 export function buildErrorFingerprintEvent(
   sessionID: string,
   err: {
diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index f6e2c0c0f8..2d4b9bd9e1 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -2194,6 +2194,8 @@ export namespace SessionPrompt {
         lastToolName = part.tool
         // altimate_change end
         if (toolChain.length < 50) toolChain.push(part.tool)
+        // a tool the user's own abort cut short is not a tool error
+        if (ErrorDetail.isRequestedInterruption(part.state, abort.aborted)) continue
         const isError = part.state?.status === "error"
         if (isError) {
           toolErrorCount++
diff --git a/packages/opencode/test/telemetry/requested-interruption.test.ts b/packages/opencode/test/telemetry/requested-interruption.test.ts
new file mode 100644
index 0000000000..2910aac23d
--- /dev/null
+++ b/packages/opencode/test/telemetry/requested-interruption.test.ts
@@ -0,0 +1,41 @@
+import { describe, expect, test } from "bun:test"
+import fs from "fs"
+import path from "path"
+import { ErrorDetail } from "../../src/altimate/telemetry/error-detail"
+
+// The processor closes still-running tools with this exact state when a generation ends.
+const interrupted = { status: "error", error: "Tool execution aborted", metadata: { interrupted: true } }
+
+describe("isRequestedInterruption", () => {
+  test("user-requested abort of a running tool is not a tool error", () => {
+    expect(ErrorDetail.isRequestedInterruption(interrupted, true)).toBe(true)
+  })
+
+  test("interruption the session did not request is still reported", () => {
+    expect(ErrorDetail.isRequestedInterruption(interrupted, false)).toBe(false)
+  })
+
+  test("ordinary tool errors are still reported after an abort", () => {
+    expect(ErrorDetail.isRequestedInterruption({ status: "error", metadata: {} }, true)).toBe(false)
+    expect(ErrorDetail.isRequestedInterruption({ status: "error" }, true)).toBe(false)
+    expect(ErrorDetail.isRequestedInterruption({ status: "completed", metadata: { interrupted: true } }, true)).toBe(
+      false,
+    )
+    expect(ErrorDetail.isRequestedInterruption(undefined, true)).toBe(false)
+  })
+
+  test("the reported fingerprint is the interrupted-tool error", () => {
+    expect(ErrorDetail.describeToolError(interrupted.error)).toEqual({
+      errorHash: "18cc068fbdbecb19",
+      errorMessage: "tool <x> aborted",
+    })
+  })
+
+  test("prompt loop skips requested interruptions before recording error fingerprints", () => {
+    const src = fs.readFileSync(path.join(__dirname, "../../src/session/prompt.ts"), "utf8")
+    const guard = src.indexOf("ErrorDetail.isRequestedInterruption(part.state, abort.aborted)) continue")
+    const record = src.indexOf("...ErrorDetail.describeToolError(errorMsg)")
+    expect(guard).toBeGreaterThan(-1)
+    expect(record).toBeGreaterThan(guard)
+  })
+})