diff --git a/src/ci-env.test.ts b/src/ci-env.test.ts
index 9231eb6..7365e5d 100644
--- a/src/ci-env.test.ts
+++ b/src/ci-env.test.ts
@@ -14,6 +14,7 @@ describe("detectCIEnvironment", () => {
     delete process.env.TF_BUILD;
     delete process.env.BUILDKITE;
     delete process.env.TEAMCITY_VERSION;
+    delete process.env.RWX;
     delete process.env.CI;
   });
 
@@ -61,6 +62,11 @@ describe("detectCIEnvironment", () => {
     expect(detectCIEnvironment()).toEqual({ name: "teamcity" });
   });
 
+  it("detects RWX", () => {
+    process.env.RWX = "true";
+    expect(detectCIEnvironment()).toEqual({ name: "rwx" });
+  });
+
   it("detects generic CI", () => {
     process.env.CI = "true";
     expect(detectCIEnvironment()).toEqual({ name: "ci" });
diff --git a/src/ci-env.ts b/src/ci-env.ts
index ef2157b..ca6ecea 100644
--- a/src/ci-env.ts
+++ b/src/ci-env.ts
@@ -31,6 +31,9 @@ export function detectCIEnvironment(): CIEnvironment | null {
   if (process.env.TEAMCITY_VERSION) {
     return { name: "teamcity" };
   }
+  if (process.env.RWX === "true") {
+    return { name: "rwx" };
+  }
   if (process.env.CI === "true") {
     return { name: "ci" };
   }
diff --git a/src/user-agent.test.ts b/src/user-agent.test.ts
index 7bf4e08..c2e62b2 100644
--- a/src/user-agent.test.ts
+++ b/src/user-agent.test.ts
@@ -13,6 +13,7 @@ describe("buildUserAgent", () => {
     process.env = { ...originalEnv };
     // Ensure our CI environment is not detected
     delete process.env.GITHUB_ACTIONS;
+    delete process.env.RWX;
     delete process.env.CI;
   });
 
@@ -36,4 +37,10 @@ describe("buildUserAgent", () => {
     const userAgent = buildUserAgent();
     expect(userAgent).toBe("linear-release/1.2.3 (gitlab-ci)");
   });
+
+  it("builds user agent for RWX", () => {
+    process.env.RWX = "true";
+    const userAgent = buildUserAgent();
+    expect(userAgent).toBe("linear-release/1.2.3 (rwx)");
+  });
 });