diff --git a/src/sandboxes/__tests__/getSandboxEnv.test.ts b/src/sandboxes/__tests__/getSandboxEnv.test.ts
index 1942b29..de2d62c 100644
--- a/src/sandboxes/__tests__/getSandboxEnv.test.ts
+++ b/src/sandboxes/__tests__/getSandboxEnv.test.ts
@@ -13,17 +13,18 @@ describe("getSandboxEnv", () => {
     process.env = { ...originalEnv };
   });
 
-  it("returns RECOUP_API_KEY, RECOUP_ACCOUNT_ID, and GITHUB_TOKEN", () => {
+  it("returns RECOUP_API_KEY, RECOUP_ACCOUNT_ID, GITHUB_TOKEN, and CHARTMETRIC_BASE_URL", () => {
     const env = getSandboxEnv("acc_123");
 
     expect(env).toEqual({
       RECOUP_API_KEY: "test-api-key",
       RECOUP_ACCOUNT_ID: "acc_123",
       GITHUB_TOKEN: "test-github-token",
+      CHARTMETRIC_BASE_URL: "https://recoup-api.vercel.app/api/chartmetric",
     });
   });
 
-  it("omits GITHUB_TOKEN when not set", () => {
+  it("omits GITHUB_TOKEN when not set but still includes CHARTMETRIC_BASE_URL", () => {
     delete process.env.GITHUB_TOKEN;
 
     const env = getSandboxEnv("acc_123");
@@ -31,6 +32,7 @@ describe("getSandboxEnv", () => {
     expect(env).toEqual({
       RECOUP_API_KEY: "test-api-key",
       RECOUP_ACCOUNT_ID: "acc_123",
+      CHARTMETRIC_BASE_URL: "https://recoup-api.vercel.app/api/chartmetric",
     });
     expect(env).not.toHaveProperty("GITHUB_TOKEN");
   });
diff --git a/src/sandboxes/getSandboxEnv.ts b/src/sandboxes/getSandboxEnv.ts
index 3906254..ee8c2e5 100644
--- a/src/sandboxes/getSandboxEnv.ts
+++ b/src/sandboxes/getSandboxEnv.ts
@@ -20,5 +20,7 @@ export function getSandboxEnv(
     env.GITHUB_TOKEN = githubToken;
   }
 
+  env.CHARTMETRIC_BASE_URL = "https://recoup-api.vercel.app/api/chartmetric";
+
   return env;
 }
diff --git a/src/sandboxes/setupOpenClaw.ts b/src/sandboxes/setupOpenClaw.ts
index 7f7c480..549fafd 100644
--- a/src/sandboxes/setupOpenClaw.ts
+++ b/src/sandboxes/setupOpenClaw.ts
@@ -29,6 +29,7 @@ export async function setupOpenClaw(
     RECOUP_API_KEY: `${process.env.RECOUP_API_KEY.slice(0, 4)}...`,
     RECOUP_ACCOUNT_ID: accountId,
     GITHUB_TOKEN: githubToken ? "present" : "missing",
+    CHARTMETRIC_BASE_URL: "https://recoup-api.vercel.app/api/chartmetric",
   });
 
   const injectEnv = await sandbox.runCommand({
@@ -43,6 +44,7 @@ export async function setupOpenClaw(
         c.env.RECOUP_API_KEY = '${process.env.RECOUP_API_KEY}';
         c.env.RECOUP_ACCOUNT_ID = '${accountId}';
         ${githubToken ? `c.env.GITHUB_TOKEN = '${githubToken}';` : ""}
+        c.env.CHARTMETRIC_BASE_URL = 'https://recoup-api.vercel.app/api/chartmetric';
         c.tools = c.tools || {};
         c.tools.profile = 'coding';
         c.agents = c.agents || {};