diff --git a/README.md b/README.md
index 13427a7..dd33500 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,8 @@ The credential resolves in order: an explicit `PRISMA_SERVICE_TOKEN` from the en
 
 The action reports build progress and outcomes to the Prisma API so your deploys show up in the Prisma Console. Reporting is active when the run has a credential (service token or OIDC exchange). When no credential is available, no reports are sent.
 
+Every request the action sends to the Prisma API also carries three headers for Prisma's deploy analytics: `x-prisma-client-name: cloud-deploy-action`, `x-prisma-client-version` (the action ref your workflow uses, such as `v1`), and `x-prisma-deploy-source: github-action`. They hold no repository or user data, and the API behaves the same without them.
+
 Progress phases map to two server-side labels: `build` and `deploy`. The install and build commands both fall under `build`; the Composer deploy or destroy step falls under `deploy`. Build states are `running` (stamped when the first phase starts), `succeeded`, `failed`, or `cancelled` (sent by the post step when the runner is interrupted mid-flight).
 
 On a successful deploy, the action also reports the deployed preview URL (`deployedUrl`) so the Console can link the live preview from the build. It reads the address — Composer's `https://<hash>.<region>.prisma.build` line — from the deploy report, anchored to the `.prisma.build` suffix; an app with several public services reports the first. Reporting the URL is best-effort like every other report: a missing address or a failed report call leaves the deploy successful.
diff --git a/credentials.mjs b/credentials.mjs
index 9d4ca80..a885fa1 100644
--- a/credentials.mjs
+++ b/credentials.mjs
@@ -2,6 +2,8 @@
 // otherwise a repository connected through the Prisma Console exchanges the
 // GitHub OIDC token of this run for a short-lived workspace token.
 
+import { clientHeaders } from "./report.mjs";
+
 const EXCHANGE_PATH = "/v1/auth/github-actions/token";
 const OIDC_AUDIENCE = "prisma-cloud";
 const TIMEOUT_MS = 15_000;
@@ -59,7 +61,7 @@ export async function resolveCredential(env, apiUrl, { fetchImpl = fetch } = {})
     `${apiUrl.replace(/\/$/, "")}${EXCHANGE_PATH}`,
     {
       method: "POST",
-      headers: { "content-type": "application/json" },
+      headers: { ...clientHeaders(env), "content-type": "application/json" },
       body: JSON.stringify({ token: oidcToken }),
     },
   );
diff --git a/report.mjs b/report.mjs
index eb86a42..0e0cbf9 100644
--- a/report.mjs
+++ b/report.mjs
@@ -26,6 +26,21 @@ async function fetchWithRetry(fetchImpl, url, init) {
   throw lastError;
 }
 
+/**
+ * Headers that tell the Prisma API which tool sent a request, for its deploy
+ * analytics. The API behaves the same without them.
+ */
+export function clientHeaders(env) {
+  return {
+    "x-prisma-client-name": "cloud-deploy-action",
+    // The ref the workflow pinned: v1, v1.7.0, or a commit SHA.
+    ...(env.GITHUB_ACTION_REF
+      ? { "x-prisma-client-version": env.GITHUB_ACTION_REF }
+      : {}),
+    "x-prisma-deploy-source": "github-action",
+  };
+}
+
 /**
  * Maps an action phase name to the server-side phase vocabulary.
  * "install" runs the user's toolchain and maps to "build".
@@ -71,13 +86,19 @@ export async function guardReport(fn, label, log) {
  * Returns a reporter bound to an API base URL and bearer token.
  * Pass fetchImpl to stub network calls in tests.
  */
-export function makeReporter({ apiUrl, token, fetchImpl = fetch }) {
+export function makeReporter({
+  apiUrl,
+  token,
+  fetchImpl = fetch,
+  env = process.env,
+}) {
   const base = apiUrl.replace(/\/$/, "");
 
   async function call(method, path, body) {
     const response = await fetchWithRetry(fetchImpl, `${base}${path}`, {
       method,
       headers: {
+        ...clientHeaders(env),
         "content-type": "application/json",
         authorization: `Bearer ${token}`,
       },
diff --git a/tests/credentials.test.mjs b/tests/credentials.test.mjs
index ba85bcd..befd122 100644
--- a/tests/credentials.test.mjs
+++ b/tests/credentials.test.mjs
@@ -53,6 +53,23 @@ test("exchanges the OIDC token with the prisma-cloud audience", async () => {
   assert.equal(seen.length, 2);
 });
 
+test("the exchange names the action, and GitHub's own token request does not", async () => {
+  const headersByHost = {};
+  const fetchImpl = async (url, init) => {
+    headersByHost[new URL(url).host] = init.headers;
+    return url.startsWith("https://token.actions.test/")
+      ? jsonResponse(200, { value: "oidc-jwt" })
+      : jsonResponse(200, { data: { value: "tok-short", workspaceId: "ws_1" } });
+  };
+  await resolveCredential({ ...githubEnv, GITHUB_ACTION_REF: "v1" }, API_URL, {
+    fetchImpl,
+  });
+  assert.equal(headersByHost["api.example.test"]["x-prisma-client-name"], "cloud-deploy-action");
+  assert.equal(headersByHost["api.example.test"]["x-prisma-client-version"], "v1");
+  assert.equal(headersByHost["api.example.test"]["x-prisma-deploy-source"], "github-action");
+  assert.equal(headersByHost["token.actions.test"]["x-prisma-client-name"], undefined);
+});
+
 test("a 401 from the exchange resolves to denied", async () => {
   const fetchImpl = async (url) =>
     url.startsWith("https://token.actions.test/")
diff --git a/tests/report.test.mjs b/tests/report.test.mjs
index 7456314..2fc88b7 100644
--- a/tests/report.test.mjs
+++ b/tests/report.test.mjs
@@ -1,6 +1,12 @@
 import assert from "node:assert/strict";
 import { test } from "node:test";
-import { failurePatch, guardReport, makeReporter, mapPhase } from "../report.mjs";
+import {
+  clientHeaders,
+  failurePatch,
+  guardReport,
+  makeReporter,
+  mapPhase,
+} from "../report.mjs";
 
 const API_URL = "https://api.example.test";
 const TOKEN = "tok-test";
@@ -89,6 +95,35 @@ test("create uses Bearer authorization", async () => {
   assert.equal(authHeader, "Bearer tok-secret");
 });
 
+test("reports name the action, its ref, and GitHub Actions as the deploy source", async () => {
+  const sentHeaders = [];
+  const fetchImpl = async (url, init) => {
+    sentHeaders.push(init.headers);
+    return jsonResponse(201, { data: { id: BUILD_ID } });
+  };
+  const reporter = makeReporter({
+    apiUrl: API_URL,
+    token: TOKEN,
+    fetchImpl,
+    env: { GITHUB_ACTION_REF: "v1.8.0" },
+  });
+  await reporter.create({ source: "ci" });
+  await reporter.update(BUILD_ID, { phase: "build" });
+  for (const headers of sentHeaders) {
+    assert.equal(headers["x-prisma-client-name"], "cloud-deploy-action");
+    assert.equal(headers["x-prisma-client-version"], "v1.8.0");
+    assert.equal(headers["x-prisma-deploy-source"], "github-action");
+  }
+  assert.equal(sentHeaders.length, 2);
+});
+
+test("clientHeaders leaves out the version when the runner sets no action ref", () => {
+  assert.deepEqual(clientHeaders({}), {
+    "x-prisma-client-name": "cloud-deploy-action",
+    "x-prisma-deploy-source": "github-action",
+  });
+});
+
 // --- reporter.update ---
 
 test("update sends the patch body to PATCH /v1/builds/{id}", async () => {