diff --git a/control-plane/src/container-driver.ts b/control-plane/src/container-driver.ts
index 66716ba2c..76211c08f 100644
--- a/control-plane/src/container-driver.ts
+++ b/control-plane/src/container-driver.ts
@@ -40,6 +40,11 @@ export type ContainerDriverConfig = {
    *  `product` string `TenantProvisioningRequest` carries; an unconfigured product is a real
    *  misconfiguration, not a silent no-op (see `bindingFor`). */
   bindings: Record<Product, ContainerNamespaceLike>;
+  /** The hosted fleet's central Sentry DSN (#7876), injected into every tenant container at cold boot as
+   *  {@link SENTRY_DSN_ENV_VAR} so its self-host process reports to it. Omitted/blank ⇒ containers start with
+   *  no injected DSN, byte-identical to the pre-#7876 call — the platform simply isn't reporting yet (e.g.
+   *  before #7875 provisions the secret). Sourced from the control-plane's own env in driver-factory.ts. */
+  centralSentryDsn?: string;
 };
 
 export type ContainerDriver = {
@@ -75,21 +80,34 @@ export const PINNED_VERSION_ENV_VAR = "LOOPOVER_PINNED_VERSION";
  *  actually has custodied -- this driver never sees or needs to know what that is. */
 export const TENANT_SECRET_ENV_VAR = "LOOPOVER_TENANT_SECRET_TOKEN";
 
+/** The env var a tenant's container reads its Sentry DSN from at cold boot (#7876, implements #4934). A tenant
+ *  container runs an unmodified self-host image (root Dockerfile for ORB; packages/loopover-miner/Dockerfile
+ *  for AMS), whose process already inits error reporting from this exact var via the opt-in `initSentry`
+ *  pattern (`src/selfhost/sentry.ts`: a complete no-op when unset) — so pointing the hosted fleet at the
+ *  central DSN is purely INJECTING that value here, never a second Sentry-wiring mechanism. Deliberately the
+ *  self-host name `SENTRY_DSN` (not a hosted-only alias): the image's own init reads this and only this, and a
+ *  self-hoster who sets their own `SENTRY_DSN` is completely unaffected — this only supplies a value the
+ *  hosted platform would otherwise leave unset. The value is a control-plane secret (provisioned by #7875),
+ *  never hardcoded or committed. */
+export const SENTRY_DSN_ENV_VAR = "SENTRY_DSN";
+
 /** Idempotent: an already-provisioned tenant's container is left running as-is, never restarted -- a repeat
  *  create must not interrupt a container mid-work. This is also the ONLY point in a tenant's lifecycle where
  *  `envVars` actually reach the container (confirmed against the real `@cloudflare/containers` SDK: a `start()`
  *  call against an already-running/starting instance is a no-op or throws, never re-applies `envVars`) -- so
- *  both of the values below must already be known by the time this runs, not supplied later. A tenant with a
- *  `pinnedVersion` (#4898) starts with that version in {@link PINNED_VERSION_ENV_VAR}; one with a
+ *  all three of the values below must already be known by the time this runs, not supplied later. A tenant with
+ *  a `pinnedVersion` (#4898) starts with that version in {@link PINNED_VERSION_ENV_VAR}; one with a
  *  `bootstrapSecret` (#8202, set on `request` by `provisionTenant` from `injectSecrets`' result) starts with it
- *  in {@link TENANT_SECRET_ENV_VAR}; a tenant with neither gets the exact pre-#4898 `start()` call, so every
- *  existing tenant's behavior is byte-identical until either rollout applies. */
+ *  in {@link TENANT_SECRET_ENV_VAR}; and when the config carries a central Sentry DSN (#7876) every container
+ *  starts with it in {@link SENTRY_DSN_ENV_VAR}. A tenant with none of them gets the exact pre-#4898 `start()`
+ *  call, so every existing tenant's behavior is byte-identical until a rollout applies. */
 export async function createTenantContainer(config: ContainerDriverConfig, request: TenantProvisioningRequest): Promise<void> {
   const stub = bindingFor(config, request.product).getByName(instanceNameFor(request));
   if (await stub.isProvisioned()) return;
   const envVars: Record<string, string> = {};
   if (request.tenant.pinnedVersion) envVars[PINNED_VERSION_ENV_VAR] = request.tenant.pinnedVersion;
   if (request.bootstrapSecret) envVars[TENANT_SECRET_ENV_VAR] = request.bootstrapSecret;
+  if (config.centralSentryDsn) envVars[SENTRY_DSN_ENV_VAR] = config.centralSentryDsn;
   if (Object.keys(envVars).length > 0) {
     await stub.start({ envVars });
   } else {
diff --git a/control-plane/src/driver-factory.ts b/control-plane/src/driver-factory.ts
index d8922254e..9513bc1c7 100644
--- a/control-plane/src/driver-factory.ts
+++ b/control-plane/src/driver-factory.ts
@@ -75,7 +75,12 @@ export function createTenantProvisioningDriver(
   }
 
   if (containerBindings && Object.keys(containerBindings).length > 0) {
-    driver = withRealContainerDriver(driver, createContainerDriver({ bindings: containerBindings }));
+    // #7876: point every tenant container at the hosted fleet's central Sentry DSN when the control-plane
+    // secret is set (per #7875). Blank/unset ⇒ omitted, so containers start byte-identical to pre-#7876.
+    driver = withRealContainerDriver(
+      driver,
+      createContainerDriver({ bindings: containerBindings, ...(nonBlank(env.SENTRY_DSN) ? { centralSentryDsn: nonBlank(env.SENTRY_DSN) } : {}) }),
+    );
   }
 
   const mainAppBaseUrl = nonBlank(env.MAIN_APP_BASE_URL);
diff --git a/control-plane/src/env.d.ts b/control-plane/src/env.d.ts
index 6fdbce9bc..6503d36b1 100644
--- a/control-plane/src/env.d.ts
+++ b/control-plane/src/env.d.ts
@@ -24,6 +24,12 @@ declare global {
      *  (a plain var, see wrangler.jsonc); createTenantProvisioningDriver falls back to the fake otherwise.
      *  Genuinely sensitive: whoever holds it can call every internal admin route in the main app. */
     INTERNAL_JOB_TOKEN?: string;
+    /** The hosted fleet's central Sentry DSN (#7876, implements #4934), provisioned as a secret by #7875.
+     *  createTenantProvisioningDriver injects it into every tenant container as `SENTRY_DSN` so the container's
+     *  own self-host process reports to it (`src/selfhost/sentry.ts`'s opt-in init). Unset ⇒ containers start
+     *  with no injected DSN, byte-identical to today. A DSN is a write-only ingest URL rather than a
+     *  credential, but it's kept a secret (never a committed var) so the hosted ingest endpoint isn't public. */
+    SENTRY_DSN?: string;
   }
 }
 
diff --git a/control-plane/src/index.ts b/control-plane/src/index.ts
index 45851d853..48d4c4d78 100644
--- a/control-plane/src/index.ts
+++ b/control-plane/src/index.ts
@@ -66,6 +66,7 @@ export {
   instanceNameFor,
   PINNED_VERSION_ENV_VAR,
   TENANT_SECRET_ENV_VAR,
+  SENTRY_DSN_ENV_VAR,
   tenantContainerExists,
   type ContainerDriver,
   type ContainerDriverConfig,
diff --git a/control-plane/src/worker.ts b/control-plane/src/worker.ts
index b1df38412..602652e93 100644
--- a/control-plane/src/worker.ts
+++ b/control-plane/src/worker.ts
@@ -56,7 +56,9 @@ export default {
     const driver = createTenantProvisioningDriver(
       // #8066: MAIN_APP_BASE_URL/INTERNAL_JOB_TOKEN select the real secret driver (against the main app's
       // token broker) once both are configured, same opt-in-per-piece shape as NEON_API_KEY/NEON_PROJECT_ID.
-      { NEON_API_KEY: env.NEON_API_KEY, NEON_PROJECT_ID: env.NEON_PROJECT_ID, MAIN_APP_BASE_URL: env.MAIN_APP_BASE_URL, INTERNAL_JOB_TOKEN: env.INTERNAL_JOB_TOKEN },
+      // #7876: SENTRY_DSN is the hosted fleet's central DSN (a control-plane secret, #7875) — the factory
+      // injects it into every tenant container so its self-host process reports to it (unset ⇒ no-op).
+      { NEON_API_KEY: env.NEON_API_KEY, NEON_PROJECT_ID: env.NEON_PROJECT_ID, MAIN_APP_BASE_URL: env.MAIN_APP_BASE_URL, INTERNAL_JOB_TOKEN: env.INTERNAL_JOB_TOKEN, SENTRY_DSN: env.SENTRY_DSN },
       { orb: env.ORB_TENANT_CONTAINER, ams: env.AMS_TENANT_CONTAINER },
     );
     const app = createTenantHttpApp({
diff --git a/control-plane/test/container-driver.test.ts b/control-plane/test/container-driver.test.ts
index 8b460f7ca..90d7cda95 100644
--- a/control-plane/test/container-driver.test.ts
+++ b/control-plane/test/container-driver.test.ts
@@ -10,6 +10,7 @@ import {
   destroyTenantContainer,
   PINNED_VERSION_ENV_VAR,
   TENANT_SECRET_ENV_VAR,
+  SENTRY_DSN_ENV_VAR,
   tenantContainerExists,
   type ContainerDriverConfig,
   type ContainerNamespaceLike,
@@ -224,3 +225,46 @@ test("a repeat create of an already-provisioned tenant with a bootstrap secret n
 
   assert.deepEqual(stub.startOptions, []);
 });
+
+// #7876: the hosted fleet's central Sentry DSN rides into every tenant container at cold boot as
+// SENTRY_DSN_ENV_VAR — the exact self-host var its own process reads via src/selfhost/sentry.ts's opt-in
+// init, so pointing the fleet at central telemetry is purely injecting the value, not a second mechanism.
+function configWithDsn(stub: ContainerStubLike, centralSentryDsn: string): ContainerDriverConfig {
+  return { bindings: { orb: { getByName: () => stub } }, centralSentryDsn };
+}
+
+test("a container starts with SENTRY_DSN_ENV_VAR when the config carries the central DSN (#7876)", async () => {
+  const stub = optionCapturingStub();
+
+  await createTenantContainer(configWithDsn(stub, "https://k@o0.ingest.sentry.io/1"), { tenant: { name: "acme" }, product: "orb" });
+
+  assert.deepEqual(stub.startOptions, [{ envVars: { [SENTRY_DSN_ENV_VAR]: "https://k@o0.ingest.sentry.io/1" } }]);
+});
+
+test("the central DSN merges with pinnedVersion + bootstrapSecret into one start() call (#7876)", async () => {
+  const stub = optionCapturingStub();
+
+  await createTenantContainer(configWithDsn(stub, "https://k@o0.ingest.sentry.io/1"), {
+    tenant: { name: "acme", pinnedVersion: "v1.4.2" },
+    product: "orb",
+    bootstrapSecret: "orbsec_xyz",
+  });
+
+  assert.deepEqual(stub.startOptions, [
+    {
+      envVars: {
+        [PINNED_VERSION_ENV_VAR]: "v1.4.2",
+        [TENANT_SECRET_ENV_VAR]: "orbsec_xyz",
+        [SENTRY_DSN_ENV_VAR]: "https://k@o0.ingest.sentry.io/1",
+      },
+    },
+  ]);
+});
+
+test("a config with no central DSN never injects SENTRY_DSN — byte-identical to today for an otherwise-plain tenant (#7876)", async () => {
+  const stub = optionCapturingStub();
+
+  await createTenantContainer(configFor(stub), { tenant: { name: "acme" }, product: "orb" });
+
+  assert.deepEqual(stub.startOptions, [undefined]);
+});
diff --git a/control-plane/test/driver-factory.test.ts b/control-plane/test/driver-factory.test.ts
index a75942ee2..7a63fb231 100644
--- a/control-plane/test/driver-factory.test.ts
+++ b/control-plane/test/driver-factory.test.ts
@@ -6,6 +6,7 @@ import { afterEach, beforeEach, test } from "node:test";
 import {
   createFakeTenantProvisioningDriver,
   createTenantProvisioningDriver,
+  SENTRY_DSN_ENV_VAR,
   withRealContainerDriver,
   withRealDatabaseDriver,
   withRealSecretDriver,
@@ -17,6 +18,32 @@ import {
   type TenantProvisioningRequest,
 } from "../dist/index.js";
 
+/** A container namespace whose stub records each `start()` call's options — lets a factory test assert what
+ *  the composed container driver actually injects (the shared fake above deliberately discards options). */
+function capturingContainerNamespace(): ContainerNamespaceLike & { startOptions: Parameters<ContainerStubLike["start"]>[0][] } {
+  const startOptions: Parameters<ContainerStubLike["start"]>[0][] = [];
+  let flag = false;
+  const stub: ContainerStubLike = {
+    async start(options) {
+      startOptions.push(options);
+      flag = true;
+    },
+    async stop() {
+      flag = false;
+    },
+    async isProvisioned() {
+      return flag;
+    },
+    async markProvisioned() {
+      flag = true;
+    },
+    async markDeprovisioned() {
+      flag = false;
+    },
+  };
+  return { getByName: () => stub, startOptions };
+}
+
 function fakeContainerNamespace(provisioned = false): ContainerNamespaceLike {
   let flag = provisioned;
   const stub: ContainerStubLike = {
@@ -172,6 +199,26 @@ test("createTenantProvisioningDriver: selects the real container driver when con
   assert.equal(await driver.containerExists(REQUEST), true);
 });
 
+test("createTenantProvisioningDriver: injects env.SENTRY_DSN into tenant containers when set (#7876)", async () => {
+  const orb = capturingContainerNamespace();
+  const driver = createTenantProvisioningDriver({ SENTRY_DSN: "https://k@o0.ingest.sentry.io/1" }, { orb });
+
+  await driver.createContainer(REQUEST);
+
+  assert.deepEqual(orb.startOptions, [{ envVars: { [SENTRY_DSN_ENV_VAR]: "https://k@o0.ingest.sentry.io/1" } }]);
+});
+
+test("createTenantProvisioningDriver: a blank or unset SENTRY_DSN injects nothing — containers start as before (#7876)", async () => {
+  for (const env of [{}, { SENTRY_DSN: "" }, { SENTRY_DSN: "   " }]) {
+    const orb = capturingContainerNamespace();
+    const driver = createTenantProvisioningDriver(env, { orb });
+
+    await driver.createContainer(REQUEST);
+
+    assert.deepEqual(orb.startOptions, [undefined]);
+  }
+});
+
 test("createTenantProvisioningDriver: composes both the real database driver AND the real container driver together", async () => {
   globalThis.fetch = (async () => new Response(JSON.stringify({ branches: [] }), { status: 200 })) as unknown as typeof fetch;