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Deploy to Vercel

The agent runs the same way locally and on Vercel. Build it, deploy it, and test the live URL to confirm the dispatcher answers from the hosted environment.

The one production-specific choice is where the sandbox runs, and even that's mostly handled for you. Let's ship it.

Outcome

The Spoke & Mirror dispatcher runs on Vercel, and you've confirmed it live by hitting its deployed routes.

Hands-on exercise

Pick the sandbox backend. Your agent has a sandbox (it seeds torque-specs.md into /workspace). Locally that runs on your machine; on Vercel it runs on hosted Vercel Sandbox. One definition covers both, DefaultSandbox.environment() picks the right provider per environment:

agent/sandbox/sandbox.ts
import { DefaultSandbox, defineSandbox } from "eve/sandbox";
 
export const environment = DefaultSandbox.environment();
 
export default defineSandbox(() => environment.open());

The file exports two things. environment describes the kind of sandbox to build, and eve build prepares it before any session exists. The default export opens a live sandbox for the current session from that environment.

Pinning a backend explicitly

DefaultSandbox is the portable choice: it picks Vercel Sandbox on Vercel, Docker when a Docker daemon is reachable, and just-bash during eve dev when neither is available. To pin Vercel unconditionally instead, import its environment from the nested path:

import { VercelSandbox } from "eve/sandbox/vercel";
export const environment = VercelSandbox.environment();

eve ships an environment per provider; check node_modules/eve/docs/sandbox/ for the set in your installed version.

Build and deploy. eve deploy runs the supported production workflow: it links the project when needed, installs dependencies, builds the app, and deploys it to Vercel. From the project root:

npx eve deploy

The deployed app serves the exact same health, session, and stream routes you've been hitting since 1.3, plus the web dashboard from 4.1. If you wired up Slack in 4.2, this is the deploy that gives its webhook a real home.

Try It

Smoke-test the live agent. Health first, it's public, no auth:

curl https://<your-app>/eve/v1/health
{"ok":true,"status":"ready","workflowId":"workflow//eve//workflowEntry"}

Now prove the fail-closed behavior from 5.1. With no customer cookie or Vercel OIDC token, the deployed production process rejects the request:

curl -i -X POST https://<your-app>/eve/v1/session \
  -H 'content-type: application/json' \
  -d '{"message":"hello"}'
HTTP/2 401
{ "ok": false, "code": "unauthorized" }

Then drive a real turn as a customer. The same route accepts the server-recognized demo session, returns 202, and gives you a sessionId to stream:

sid=$(curl -s -X POST https://<your-app>/eve/v1/session \
  -H 'content-type: application/json' -H 'cookie: shop_session=demo-pro' \
  -d '{"message":"what does a full overhaul cost?"}' \
  | sed -E 's/.*"sessionId":"([^"]+)".*/\1/')
curl -sN -H 'cookie: shop_session=demo-pro' \
  "https://<your-app>/eve/v1/session/$sid/stream"

Or point the terminal UI at the deployment and talk to it interactively. eve dev always starts a local server, so connecting to a deployed agent is its own command. Pass the customer cookie as a header, since the fail-closed channel rejects anyone it doesn't recognize:

npx eve remote connect --url https://<your-app> \
  --header 'cookie: shop_session=demo-pro'

The production dispatcher keeps its tools and approval gate. Ask it to book the overhaul and the turn still pauses for approval.

Find your runs in the dashboard

Once deployed, Vercel auto-detects eve as the framework and surfaces an Agent Runs tab under your project's Observability view. Each conversation is a trace you can open and walk, every tool call, every approval, every turn. (Agent Runs is in beta on every plan and bills at Always-on Tracing rates. If an existing project shows no runs, add a sampling rule under Settings → Tracing, as the Agent Runs docs describe.)

A 401 on every live request means the fail-closed lock rejected the caller. Send a valid shop_session cookie, or use the public /eve/v1/health route for a quick check. If eve build fails on discovery, read the printed diagnostics and .eve/diagnostics.json. A common cause is a tool file that doesn't export default its defineTool.

Done-When

  • agent/sandbox/sandbox.ts exports an environment and a defineSandbox default (DefaultSandbox.environment() is fine).
  • eve deploy builds successfully and ships the app.
  • curl https://<your-app>/eve/v1/health returns ok.
  • An unauthenticated session request returns 401, while shop_session=demo-pro returns 202 with a session ID.
  • A real turn against the deployed URL works (TUI via eve remote connect --url <url> with the cookie header, or curl with a session).

Solution

The only code is the sandbox environment; the rest is one command:

agent/sandbox/sandbox.ts
import { DefaultSandbox, defineSandbox } from "eve/sandbox";
 
export const environment = DefaultSandbox.environment();
 
export default defineSandbox(() => environment.open());
npx eve deploy

The dispatcher now runs in production with the persona and capabilities you built throughout the course. The final lesson covers the eve directories this shop did not need and when you might use them.

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