Your features do not live in one repo — why should your agent? Agen agents work across your frontend, backend, and infrastructure repos in a single session. Coordinated changes, one PR per repo, one fully shipped feature.
You need to add a new API endpoint. That means changes to your backend repo. Then the frontend needs to call it — that is your frontend repo. And the deployment config needs updating — that is infra.
With every other AI coding tool, that's three separate sessions. Three separate contexts. Three sets of instructions. You're the glue holding them together, manually making sure the API endpoint name matches, the types align, and the deployment actually picks up the new service.
That's not autonomous. That's project management with extra steps.
“Add Stripe billing to the settings page.” One sentence. The agent figures out which repos are involved.
Your frontend, backend, and infra repos — cloned into the same session. The agent reads the code across all of them to understand how they connect.
The agent writes the API endpoint in your backend, builds the UI in your frontend, and updates the environment config in your infra repo. All changes are aware of each other — types match, endpoints align, configs are consistent.
Each repo gets its own clean PR with a clear diff. PRs reference each other so reviewers see the full picture across the stack.
See all the services running together before you merge anything. The frontend calling the backend, the backend processing requests — the full integrated flow.
New `/api/billing` endpoint, Stripe SDK integration, webhook handler
Settings page with plan selector, payment form, billing history
Stripe API key in env config, webhook URL in deployment
3 linked PRs + live preview of the entire billing flow working end-to-end
OAuth callback handler, session management, user model update
“Login with Google” button, auth redirect flow, session state
OAuth client ID/secret in env config, redirect URLs in deployment
3 linked PRs + live preview of the full login flow
Fix the API response format
Update the parser to match the fixed format
2 linked PRs + preview confirming the bug is gone
This is not a minor feature gap — it is a fundamental architecture difference. Multi-repo support requires the agent to understand how multiple codebases connect, coordinate changes across them, and preview the integrated result. Bolting it onto a single-repo tool is not trivial.
| Tool | Multi-repo sessions? | What happens instead |
|---|---|---|
| Agen | ✓ | One task, multiple repos, coordinated changes, linked PRs, cross-repo preview |
| Cursor | ✗ | One repo per Cloud Agent session. You run separate sessions and coordinate manually. |
| Devin | ✗ | Single repo per session. No cross-repo awareness. |
| GitHub Copilot | ✗ | Coding agent works on one repo via GitHub Issues. |
| Claude Code | ✗ | Cloud sessions are single-repo. Multi-repo is an open feature request. |
Every feature that touches more than one repo ships as a coordinated unit. No “the backend is merged but the frontend PR is still open” limbo.
Linked PRs mean your code reviewer understands the entire change — not just one repo's slice of it. Better reviews, fewer missed dependencies.
The integrated preview shows all services running together. Test the full flow before merging anything. No more “it works in the frontend but the backend endpoint does not exist yet.”
One task. Every repo. Fully shipped.
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