diff --git a/.gitignore b/.gitignore
index 713b34f..5ee4716 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,4 @@ _*.css
 node_modules/
 *.min.css
 /api/apis.json
-
+/api_hash
diff --git a/README.md b/README.md
index 0fe336d..f957ef8 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,7 @@
 
 <p align="center">
     <a href="https://app.netlify.com/sites/ari-web/deploys">
-        <img alt="Netlify Status" src="https://api.netlify.com/api/v1/badges/4ac67547-6444-4c67-9a54-c7f8fb28427b/deploy-status"/>
-    </a>
-</p>
+        <img alt="Netlify Status" src="https://api.netlify.com/api/v1/badges/4ac67547-6444-4c67-9a54-c7f8fb28427b/deploy-status"/> </a> </p>
 
 ### [My website's](https://www.ari-web.xyz/) source code.
 
@@ -25,6 +23,16 @@
 6. Edit all stuff that is `ARI-WEB-SPECIFIC` in [netlify.toml](/netlify.toml)
 7. Publish on [netlify](https://netlify.com/)
 
+# API hashes
+
+If you want to call to a very expensive API it might become
+slow, so there's hashes for them, they are sha256 hashes of
+those JSON files in the api
+
+So what you do, replace all `.` in the API name with \_,
+then make the request to `/api_hash/....txt` and you will
+get the hash, for example: <https://www.ari-web.xyz/api_hash/apis_json.txt>
+
 # Usage API
 
 The [usage api](https://www.ari-web.xyz/api/usage.json)
diff --git a/netlify.toml b/netlify.toml
index aef52be..7afccd8 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -174,6 +174,13 @@
         Access-Control-Allow-Origin = "*"
         Access-Control-Allow-Methods = "GET"
 
+[[headers]]
+    for = "/api_hash/*"
+
+    [headers.values]
+        Access-Control-Allow-Origin = "*"
+        Access-Control-Allow-Methods = "GET"
+
 [[headers]]
     for = "/*"
 
diff --git a/scripts/apis.sh b/scripts/apis.sh
index 146fd18..705c6e8 100755
--- a/scripts/apis.sh
+++ b/scripts/apis.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 set -e
 
@@ -22,6 +22,18 @@ main() {
     } >"$apis"
 
     echo 'done'
+
+    printf ' * %s... ' 'Generating api hashes'
+
+    mkdir -p -- api_hash
+    rm -rf -- api_hash/*
+
+    for api in api/*; do
+        api_base="${api##*/}"
+        sha256sum "$api" | awk '{ print $1 }' >"api_hash/${api_base//./_}.txt"
+    done
+
+    echo 'done'
 }
 
 main "$@"