diff --git a/appendframeposturl.go b/appendframeposturl.go
new file mode 100644
index 0000000..4cd1255
--- /dev/null
+++ b/appendframeposturl.go
@@ -0,0 +1,21 @@
+package frameproto
+
+// AppendFramePostURL will append the HTML element for the Frame-Protocol's (i.e., Farcaster Frame's) "fc:frame:post_url" name-value pair.
+//
+// For example, this call:
+//
+// var p []byte
+//
+// // ...
+//
+// var url string = "https://example.com/my/post/path.php"
+//
+// p = frameproto.AppendFramePostURL(p, url)
+//
+// Would append this HTML element:
+//
+//
+func AppendFramePostURL(p []byte, url string) []byte {
+ const property string = MetaPropertyFramePostURL
+ return appendMetaPropertyContent(p, property, url)
+}
diff --git a/appendframeposturl_test.go b/appendframeposturl_test.go
new file mode 100644
index 0000000..f28edb5
--- /dev/null
+++ b/appendframeposturl_test.go
@@ -0,0 +1,96 @@
+package frameproto
+
+import (
+ "testing"
+)
+
+func TestAppendFramePostURL(t *testing.T) {
+
+ tests := []struct{
+ Version string
+ Expected string
+ }{
+ {
+ Version: "",
+ Expected: ``+"\n",
+ },
+
+
+
+ {
+ Version: "something",
+ Expected: ``+"\n",
+ },
+
+
+
+ {
+ Version: "Hello world! 🙂",
+ Expected: ``+"\n",
+ },
+
+
+
+ {
+ Version: "https://example.com/path/to/post/to.php",
+ Expected: ``+"\n",
+ },
+
+
+
+ {
+ Version: "x-proto:apple/banana/cherry",
+ Expected: ``+"\n",
+ },
+ }
+
+ for testNumber, test := range tests {
+
+ {
+ var buffer [256]byte
+ var p []byte = buffer[0:0]
+
+ p = AppendFramePostURL(p, test.Version)
+
+ expected := test.Expected
+ actual := string(p)
+
+ if expected != actual {
+ t.Errorf("For test #%d, the actual written meta-tag is not what was expected.", testNumber)
+ t.Logf("EXPECTED: %s", expected)
+ t.Logf("ACTUAL: %s", actual)
+ t.Logf("EXPECTED: %q", expected)
+ t.Logf("ACTUAL: %q", actual)
+ t.Logf("LABEL: %q", test.Version)
+ continue
+ }
+ }
+
+ {
+ const top string = "\n\n"
+ const bottom string = "\n\n\n\n"
+
+ var buffer [256]byte
+ var p []byte = buffer[0:0]
+
+ p = append(p, top...)
+
+ p = AppendFramePostURL(p, test.Version)
+
+ p = append(p, bottom...)
+
+ expected := top + test.Expected + bottom
+ actual := string(p)
+
+ if expected != actual {
+ t.Errorf("For test #%d, the actual written meta-tag is not what was expected.", testNumber)
+ t.Logf("EXPECTED: %s", expected)
+ t.Logf("ACTUAL: %s", actual)
+ t.Logf("EXPECTED: %q", expected)
+ t.Logf("ACTUAL: %q", actual)
+ t.Logf("LABEL: %q", test.Version)
+ continue
+ }
+ }
+ }
+}