diff --git a/.github/workflows/spell_check.yml b/.github/workflows/spell_check.yml
new file mode 100644
index 0000000..b4d999a
--- /dev/null
+++ b/.github/workflows/spell_check.yml
@@ -0,0 +1,13 @@
+name: Spell check
+
+on: [push, pull_request]
+
+jobs:
+  spell-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: codespell-project/actions-codespell@v1
+        with:
+          check_filenames: true
+          check_hidden: true
diff --git a/api/starknet_api_openrpc.json b/api/starknet_api_openrpc.json
index 48cb0f3..acc92a4 100644
--- a/api/starknet_api_openrpc.json
+++ b/api/starknet_api_openrpc.json
@@ -487,7 +487,7 @@
         {
             "name": "starknet_estimateFee",
             "summary": "estimate the fee for of StarkNet transactions",
-            "description": "estimates the resources required by transactions when applyed on a given state",
+            "description": "estimates the resources required by transactions when applied on a given state",
             "params": [
                 {
                     "name": "request",
@@ -616,7 +616,7 @@
         },
         {
             "name": "starknet_syncing",
-            "summary": "Returns an object about the sync status, or false if the node is not synching",
+            "summary": "Returns an object about the sync status, or false if the node is not syncing",
             "params": [],
             "result": {
                 "name": "syncing",
diff --git a/validate.js b/validate.js
index 3927efb..7ca7005 100755
--- a/validate.js
+++ b/validate.js
@@ -43,7 +43,7 @@ async function fetchExternalRefsFor(docToParse) {
  * For a given dereferencer object, make sure its initial refs don't include refs that are already
  * in the ref cache it has. So it won't try to resolve these.
  *
- * @param {Dereferencer} dereffer The dereferncer object
+ * @param {Dereferencer} dereffer The dereferencer object
  * @returns The amended dereferencer.
  */
 function fixRefs(dereffer) {