# Modifee

> Modifee lets agencies and freelance developers give their clients an AI chat inside the apps they deliver; the client asks for changes in plain language, an AI agent edits the code, opens a PR on GitHub and deploys a preview. Small changes can auto-merge; the agency keeps control of the rest.

For agencies, freelancers, and dev studios that ship client-specific projects with GitHub and Vercel.
The client asks in the widget, an agent edits the code and opens a pull request on GitHub, and a preview is deployed. Small changes can auto-merge; the agency keeps control of the rest.
Works with GitHub, Vercel, Heroku Review Apps, and Shopify themes, plus any host that posts previews to GitHub.

## Product

- [Home](https://www.modifee.com/): Modifee lets agencies and freelance developers give their clients an AI chat inside the apps they deliver; the client asks for changes in plain language, an AI agent edits the code, opens a PR on GitHub and deploys a preview. Small changes can auto-merge; the agency keeps control of the rest.
- [Who it's for](https://www.modifee.com/#who): For agencies, freelancers, and dev studios that ship client-specific projects with GitHub and Vercel.
- [How it works](https://www.modifee.com/#how-it-works): The client asks in the widget, an agent edits the code and opens a pull request on GitHub, and a preview is deployed. Small changes can auto-merge; the agency keeps control of the rest.
- [Integrations](https://www.modifee.com/#integrations): Works with GitHub, Vercel, Heroku Review Apps, and Shopify themes, plus any host that posts previews to GitHub.

## Pricing

- [Pricing](https://www.modifee.com/pricing): Free $0 USD/month, 15 credits; Starter $39 USD/month, 150 credits; Studio $129 USD/month, 600 credits; Agency $349 USD/month, 2000 credits. Small edits use 1 credit, bigger changes like new pages use more. Paid plans: $0.60 per extra credit.

## Docs

- [What is Modifee](https://www.modifee.com/docs/getting-started/what-is-modifee.md): A client describes a site change in the widget, and Modifee opens a pull request you can preview and merge.
- [Quickstart](https://www.modifee.com/docs/getting-started/quickstart.md): Go from a new account to a merged test change on a connected GitHub repository.
- [Next.js App Router](https://www.modifee.com/docs/install/nextjs-app-router.md): Add the widget script to the Next.js root layout, then confirm Widget install is complete.
- [Next.js Pages Router](https://www.modifee.com/docs/install/nextjs-pages-router.md): Add the widget script to pages/_document, then confirm Widget install is complete.
- [HTML and static sites](https://www.modifee.com/docs/install/html.md): Paste the widget script before the closing body tag on an HTML or static site, then confirm Widget install is complete.
- [Other frameworks](https://www.modifee.com/docs/install/other-frameworks.md): Add the widget script on Vite, Astro, Flask, Django, Laravel, or Rails, then confirm Widget install is complete.
- [Auth methods](https://www.modifee.com/docs/client-access/auth-methods.md): Choose Site without login or App with login, and see what the client does before a request is accepted.
- [Access marker](https://www.modifee.com/docs/client-access/access-marker.md): Choose the URL marker that shows the widget on a site without login, and replace the link when it changes.
- [Allowed emails](https://www.modifee.com/docs/client-access/allowed-emails.md): Add or remove the people who can request changes, and send a test request from the agency.
- [Vercel integration](https://www.modifee.com/docs/vercel/integration.md): Install the Vercel integration, choose the project, and grant access when that project is missing from the list.
- [Signing secret](https://www.modifee.com/docs/vercel/signing-secret.md): Store MODIFEE_SECRET, push it to Vercel Production and Preview, and regenerate it when the value must change.
- [Redeploy](https://www.modifee.com/docs/vercel/redeploy.md): Redeploy production after MODIFEE_SECRET is pushed so the running site picks up the new value.
- [Protected previews](https://www.modifee.com/docs/vercel/protected-previews.md): Open Vercel-protected preview deployments for clients, and leave other hosts on GitHub detection.
- [For clients](https://www.modifee.com/docs/widget/for-clients.md): How to ask for a site change in the widget, review the preview, and read the messages you may see.
- [Voice dictation](https://www.modifee.com/docs/widget/voice-dictation.md): Dictate a widget request into the text box, and how that recording is billed.
- [Inbox](https://www.modifee.com/docs/agency/inbox.md): What each request status asks you to do, and what the Test badge means.
- [Quotes and merges](https://www.modifee.com/docs/agency/quotes-and-merges.md): Send a quote, see what the client gets, then merge, retry, or reject.
- [Autopilot and limits](https://www.modifee.com/docs/agency/autopilot-and-limits.md): The Autopilot and limits settings, their defaults, and the plan's credits.
- [Guardrails](https://www.modifee.com/docs/agency/guardrails.md): Paths the coding agent must not change, the defaults, and how to edit the list.
- [Health indicators](https://www.modifee.com/docs/agency/health-indicators.md): The Home light, and the green or yellow mark on each project Settings section.
- [Symptom index](https://www.modifee.com/docs/troubleshooting/index.md): Match a symptom to a troubleshooting page, and the error codes that show up most often.
- [Widget not showing](https://www.modifee.com/docs/troubleshooting/widget-not-showing.md): The change button never appears on the client site.
- [Email not allowed](https://www.modifee.com/docs/troubleshooting/email-not-allowed.md): The widget refuses the client's email.
- [Token errors](https://www.modifee.com/docs/troubleshooting/token-errors.md): App with login: the widget cannot verify the signed client token.
- [Secret and redeploy](https://www.modifee.com/docs/troubleshooting/secret-and-redeploy.md): MODIFEE_SECRET is missing on Vercel, or a redeploy did not pick it up.
- [Previews](https://www.modifee.com/docs/troubleshooting/previews.md): No preview was detected, the preview is protected, or the last check failed.
- [Agent and pull request](https://www.modifee.com/docs/troubleshooting/agent-and-pr.md): The agent failed, no pull request was opened, or a monthly limit stopped the request.
- [Billing and plan](https://www.modifee.com/docs/troubleshooting/billing-and-plan.md): A plan limit, a missing billing account, a checkout that did not open, or the project's monthly request cap.
- [Error catalog](https://www.modifee.com/docs/errors.md): Every Modifee error code, with what caused it and how to fix it.
- [MDF-AUTH-001](https://www.modifee.com/docs/errors/MDF-AUTH-001.md): You need to sign in.
- [MDF-AUTH-002](https://www.modifee.com/docs/errors/MDF-AUTH-002.md): This email isn't allowed to request changes on this site.
- [MDF-AUTH-003](https://www.modifee.com/docs/errors/MDF-AUTH-003.md): You don't have access to this.
- [MDF-AUTH-004](https://www.modifee.com/docs/errors/MDF-AUTH-004.md): That code is incorrect or has expired.
- [MDF-AUTH-005](https://www.modifee.com/docs/errors/MDF-AUTH-005.md): Too many attempts. Request a new code.
- [MDF-REQ-001](https://www.modifee.com/docs/errors/MDF-REQ-001.md): Something was off with that request.
- [MDF-REQ-002](https://www.modifee.com/docs/errors/MDF-REQ-002.md): We couldn't find that.
- [MDF-REQ-003](https://www.modifee.com/docs/errors/MDF-REQ-003.md): That conflicted with the current state.
- [MDF-REQ-004](https://www.modifee.com/docs/errors/MDF-REQ-004.md): You've used the adjustments included with this change.
- [MDF-QUOTA-001](https://www.modifee.com/docs/errors/MDF-QUOTA-001.md): Request received — your team has been notified and will process it shortly.
- [MDF-QUOTA-002](https://www.modifee.com/docs/errors/MDF-QUOTA-002.md): Too many requests. Try again in a moment.
- [MDF-QUOTA-003](https://www.modifee.com/docs/errors/MDF-QUOTA-003.md): Too many codes requested. Try again in a few minutes.
- [MDF-PLAN-001](https://www.modifee.com/docs/errors/MDF-PLAN-001.md): This workspace is over its plan limit.
- [MDF-PLAN-002](https://www.modifee.com/docs/errors/MDF-PLAN-002.md): This workspace has no billing account yet.
- [MDF-PLAN-003](https://www.modifee.com/docs/errors/MDF-PLAN-003.md): Billing could not be opened.
- [MDF-PLAN-004](https://www.modifee.com/docs/errors/MDF-PLAN-004.md): You've reached this month's request limit. Your team can raise it.
- [MDF-WIDGET-001](https://www.modifee.com/docs/errors/MDF-WIDGET-001.md): That file could not be attached.
- [MDF-WIDGET-002](https://www.modifee.com/docs/errors/MDF-WIDGET-002.md): Transcription failed.
- [MDF-WIDGET-003](https://www.modifee.com/docs/errors/MDF-WIDGET-003.md): The sign-in email could not be sent.
- [MDF-WIDGET-004](https://www.modifee.com/docs/errors/MDF-WIDGET-004.md): Allow the microphone in your browser to dictate.
- [MDF-WIDGET-005](https://www.modifee.com/docs/errors/MDF-WIDGET-005.md): The connection was lost.
- [MDF-VERCEL-001](https://www.modifee.com/docs/errors/MDF-VERCEL-001.md): Vercel could not complete that request.
- [MDF-VERCEL-002](https://www.modifee.com/docs/errors/MDF-VERCEL-002.md): The preview signing secret is missing or was not saved.
- [MDF-VERCEL-003](https://www.modifee.com/docs/errors/MDF-VERCEL-003.md): The preview could not be opened.
- [MDF-INTERNAL-001](https://www.modifee.com/docs/errors/MDF-INTERNAL-001.md): Something broke on our end. We've been notified.
- [MDF-INTERNAL-002](https://www.modifee.com/docs/errors/MDF-INTERNAL-002.md): Modifee is briefly unavailable.

## Comparisons / FAQ

- [What is Modifee?](https://www.modifee.com/#faq): Modifee lets agencies and freelance developers give their clients an AI chat inside the apps they deliver; the client asks for changes in plain language, an AI agent edits the code, opens a PR on GitHub and deploys a preview. Small changes can auto-merge; the agency keeps control of the rest.
- [How does Modifee work with GitHub and Vercel?](https://www.modifee.com/#faq): Each project is one GitHub repository. Modifee opens a pull request, and Vercel builds a preview from that pull request. The client reviews the preview. The pull request is squash-merged into the default branch, and the site's existing production deploy ships it.
- [Does it work with Heroku?](https://www.modifee.com/#faq): Yes. Preview detection works with Heroku Review Apps and with any host that posts deployment status to GitHub. The widget can be installed on HTML, Next.js, WordPress, Webflow, and Shopify themes (theme.liquid).
- [Can my client break production?](https://www.modifee.com/#faq): The chat does not commit to the default branch. The change stays on a pull request until it is merged. Auto-merge runs only after the client approves a change the project's Autopilot mode allows. Protected paths, deleted files, and diffs over the file and line caps always wait for the agency. Autopilot can be set to Off so every merge waits for you.
- [What changes can auto-merge?](https://www.modifee.com/#faq): Off: Every change waits for you. Safe: Text, styles, and links. Standard: Also new pages, long copy, and small UI additions. Aggressive: Same scope as Standard, with a higher file and line cap. New projects start on Aggressive. Auto-merge runs only after the client approves, and only when a preview is ready on the pull request. Protected paths, deleted files, and diffs over that mode's file and line caps always wait for the agency.
- [Do I need my own Anthropic or OpenAI key?](https://www.modifee.com/#faq): No. You do not need your own Anthropic or OpenAI key. AI usage is included in the plan and metered in credits.
- [How is it priced?](https://www.modifee.com/#faq): Monthly plans in USD, plus applicable taxes. Free is $0 USD/month (15 credits / month, no overage, no credit rollover). Starter is $39 USD/month (150 credits / month, $0.60 per extra credit, unused credits roll over 1 month). Studio is $129 USD/month (600 credits / month, $0.60 per extra credit, unused credits roll over 1 month). Agency is $349 USD/month (2000 credits / month, $0.60 per extra credit, unused credits roll over 1 month). Small edits use 1 credit, bigger changes like new pages use more. Details are on https://www.modifee.com/pricing.
- [Is it for multi-tenant SaaS?](https://www.modifee.com/#faq): No. Modifee is built for client-specific projects. One project is one GitHub repository for one client site. It is not a shared multi-tenant application used by many customers of the same product.
- [What do you store from my code?](https://www.modifee.com/#faq): We don't keep copies of your repository. Code is only read inside a temporary sandbox during a request.
- [What if the change is too big?](https://www.modifee.com/#faq): Large requests are held for a quote instead of being attempted. The agency sends the quote, and the coding agent starts after the client accepts. Backend, auth, payments, personal data, and protected paths are held that way.