ReplyOnTheFly
Writes replies to Google, Yelp and other customer reviews, and texts asking for a review.
What can you do with ReplyOnTheFly?
- Post anything. You copy the reply and paste it under the review yourself.
- Send texts or emails. You send the review request yourself.
- Write reviews, fake or otherwise.
- Connect to your Google Business Profile or need a ReplyOnTheFly account.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http replyonthefly 'https://www.replyonthefly.com/mcp'{
"mcpServers": {
"replyonthefly": {
"type": "http",
"url": "https://www.replyonthefly.com/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
ReplyOnTheFly MCP server
Writes replies to customer reviews on Google, Yelp, Facebook, TripAdvisor and Trustpilot, and short messages asking a customer for a Google review. It is a hosted remote server: nothing to install, no account, no API key.
| URL | https://www.replyonthefly.com/mcp |
| Transport | Streamable HTTP |
| Authentication | None |
| MCP Registry name | com.replyonthefly/replyonthefly |
This repository holds the documentation. The server itself is hosted and run by ReplyOnTheFly.
Configure
VS Code (GitHub Copilot)
Add the server to .vscode/mcp.json in your workspace, or to your user mcp.json:
{
"servers": {
"replyonthefly": {
"type": "http",
"url": "https://www.replyonthefly.com/mcp"
}
}
}Then open Copilot Chat in agent mode and make sure the ReplyOnTheFly tools are enabled.
Claude Code
claude mcp add --transport http replyonthefly https://www.replyonthefly.com/mcpGemini
On gemini.google.com, open Settings > Connected Apps and click + Custom. Paste the URL, click Next, accept the notice and click Connect. In a chat, type @ReplyOnTheFly, pick it, and paste the review. Google limits custom apps to personal Google accounts in the US, aged 18 and over, in English, with Keep Activity on. You add them on the web; they also work in the Gemini mobile app.
Other MCP clients
Add a remote MCP server with the URL https://www.replyonthefly.com/mcp, transport Streamable HTTP, and no authentication. Setup steps for each app are also at replyonthefly.com/ai-connector.
Use it
Paste a review into the chat and ask for a reply. For example:
- Write a reply to this 1-star Google review of my restaurant: …
- Help me respond to an angry customer review without sounding defensive
- Make it shorter and sign it from Maria
- Write a text I can send my customer Dana asking for a Google review
Example output. Prompt:
Help me respond to this 2-star review of Oak & Pine Furniture without sounding defensive: "Nobody answered the phone all week and my order still isn't here."
Reply:
I'm really sorry your experience with us was frustrating and disappointing. We take responsibility for this and would like to sort it out, please reach out to us directly so we can look into your order and make things right. I hope we can resolve this for you soon.
Tools
Both tools are read-only: they return text and change nothing anywhere.
write_review_reply
Writes a reply that fits the star rating: a thank-you for happy customers, and for unhappy ones a calm reply that acknowledges the problem without arguing and offers to make it right. Healthcare replies never confirm that the reviewer is a patient.
| Input | Required | Description |
|---|---|---|
business_name | yes | Name of the business being reviewed |
star_rating | yes | Stars the customer gave, 1 to 5 |
review_text | The review as the customer wrote it (up to 2,000 characters) | |
reviewer_name | The reviewer's display name, if shown | |
business_type | For example "dentist", "pizza restaurant", "plumber" | |
tone | friendly (default), professional, casual or enthusiastic | |
length | concise (1 to 2 sentences), standard (2 to 3, default) or detailed (3 to 4) | |
platform | google (default), yelp, facebook, tripadvisor or trustpilot | |
owner_notes | Up to 5 facts or wishes from the owner, such as "we fixed the AC last week" or "sign off as Maria" | |
alternate | true for a differently worded version of a reply already written |
Returns the reply as text, plus structured content with reply, star_rating, business_name and platform.
write_review_request_message
Writes up to three short texts or emails asking a customer for a Google review, worded for the type of business, with the review link at the end. They never offer a discount or reward, because Google does not allow incentives for reviews.
| Input | Required | Description |
|---|---|---|
business_name | yes | Name of the business asking for the review |
business_type | For example "plumber", "hair salon", "restaurant" | |
customer_first_name | The customer's first name | |
channel | text (default) or email | |
review_link | The business's Google review link (https://...). Without it, the messages use a placeholder and explain where to find the link. |
What it does not do
- Post anything. You copy the reply and paste it under the review yourself.
- Send texts or emails. You send the review request yourself.
- Write reviews, fake or otherwise.
- Connect to your Google Business Profile or need a ReplyOnTheFly account.
Privacy
The server receives only the tool inputs for each request. It does not store the review, the names, the review link or the reply. Replies are generated with OpenAI's API; review request messages come from templates and are not sent to OpenAI. Full details: replyonthefly.com/privacy#ai-apps.
Support
Email support@replyonthefly.com.
ReplyOnTheFly is operated by BYS Ventures LLC.
Frequently asked questions
What is ReplyOnTheFly?
Writes replies to Google, Yelp and other customer reviews, and texts asking for a review.
How do I install ReplyOnTheFly?
It runs as a remote server. In Claude Code: claude mcp add --transport http replyonthefly 'https://www.replyonthefly.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does ReplyOnTheFly need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is ReplyOnTheFly open source?
Its code is public on GitHub, but the repository does not declare a standard license.
Who maintains ReplyOnTheFly?
It is published by BYS-Ventures. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.