diff --git a/extensions/solr/Cargo.toml b/extensions/solr/Cargo.toml
index b32d3e0..91a787b 100644
--- a/extensions/solr/Cargo.toml
+++ b/extensions/solr/Cargo.toml
@@ -1,11 +1,11 @@
 [package]
 name = "solr"
-version.workspace = true
-description.workspace = true
+version = "0.1.0"
+description = "polymath extension to push pages on Solr"
 readme.workspace = true
 edition.workspace = true
 license.workspace = true
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
+polymath-crawler = { path = "../../crates/polymath-crawler" }
+polymath-error = { path = "../../crates/polymath-error" }
diff --git a/extensions/solr/src/lib.rs b/extensions/solr/src/lib.rs
index 7d12d9a..d9da181 100644
--- a/extensions/solr/src/lib.rs
+++ b/extensions/solr/src/lib.rs
@@ -1,14 +1,20 @@
-pub fn add(left: usize, right: usize) -> usize {
-    left + right
-}
+use polymath_crawler::extractor::meta::Meta;
+use polymath_crawler::{Crawler, Event};
+
+#[derive(Debug)]
+struct Solr(Crawler);
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+impl Event for Solr {
+    fn before_request(&self, _url: &str) -> Result<(), polymath_error::Error> {
+        Ok(())
+    }
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
+    fn after_request(
+        &self,
+        _title: &str,
+        _meta: Vec<Meta>,
+        _html: &str,
+    ) -> Result<(), polymath_error::Error> {
+        Ok(())
     }
 }