---
title: "Install Semanto on Fastly - Trooth"
description: "Put your signed Semanto copy on a site hosted on Fastly: the package, the steps and how to check it works."
canonical_url: "https://trooth.co/docs/semanto/install/fastly-compute"
markdown_url: "https://trooth.co/docs/semanto/install/fastly-compute.md"
generated_from: "the rendered page, converted to Markdown when this was requested"
agent_index: "https://trooth.co/llms.txt"
---

# Install Semanto on Fastly

A Compute service in front of your site answers agents with your signed copy and sends every other request to your origin.

## Before you start

You need your Trooth ID. [Open Put it on your site](https://trooth.co/dashboard/semanto/install) in your dashboard: it shows these steps with your ID filled in, and finds your host for you.

## Steps

1. Download the package below and unzip it.
2. In the fastly-compute folder, run npm install and then fastly compute publish.
3. When asked, enter your website's hostname for the origin backend, leave api.trooth.co for the trooth_api backend, and enter your Trooth ID for TROOTH_ID.
4. Point your domain at the new service, then press Check my site in the dashboard.

## Download

[Download the Fastly package](https://trooth.co/downloads/semanto/trooth-semanto-fastly-compute.zip) (zip, 17 KB). You do not need to open the files inside it: the steps say where each one goes.

## Check it works

In the dashboard, press Check my site. It shows each of the three checks as Passed or Not yet, and what to change if one is not yet passing.

For developers: the same checks from a terminal

The answer should be markdown with Signature and Trooth-Semanto-Version headers.

```bash
curl -s -H "Accept: text/markdown" https://example.com/ | head
```

If Trooth is slow or down, your site keeps answering: [what the adapter does](https://trooth.co/docs/semanto#delivery).

## Someone else runs your website?

[Email them these steps](mailto:?subject=Please%20add%20Semanto%20by%20Trooth%20to%20our%20website&body=Hi%2C%0A%0ACould%20you%20add%20Semanto%20by%20Trooth%20to%20our%20website%3F%20The%20steps%20for%20Fastly%20are%20here%3A%0Ahttps%3A%2F%2Ftrooth.co%2Fdocs%2Fsemanto%2Finstall%2Ffastly-compute%0A%0AThe%20Trooth%20ID%20to%20use%3A%20%0A%0AThank%20you.). They need your Trooth ID too, so send it with them.

[All install guides](https://trooth.co/docs/semanto#install)

## Was this page helpful?

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