diff --git a/next-gen-signing-service/examples/zkp/flow.http b/next-gen-signing-service/examples/zkp/flow.http
index de5fd1a..4583a11 100644
--- a/next-gen-signing-service/examples/zkp/flow.http
+++ b/next-gen-signing-service/examples/zkp/flow.http
@@ -48,13 +48,14 @@ GET http://localhost:8000/zkp/keypair
     exports.issuer_sk = response.parsedBody.secret_key
 }}
 
-GET http://localhost:8000/zkp/issue
-    ?data={{data}}
-    &issuer_pk={{issuer_pk}}
+POST http://localhost:8000/zkp/issue
+    ?issuer_pk={{issuer_pk}}
     &issuer_sk={{issuer_sk}}
     &issuer_id={{issuer_id}}
     &issuer_key_id={{issuer_key_id}}
 
+{{data}}
+
 {{
     exports.credential = response.parsedBody.encoded;
 }}
@@ -71,22 +72,26 @@ GET http://localhost:8000/zkp/proving-keys
     ))
 }}
 
-GET http://localhost:8000/zkp/present
-    ?credential={{credential}}
-    &definition={{definition}}
-    &proving_keys={{proving_keys}}
-    &issuer_pk={{issuer_pk}}
+POST http://localhost:8000/zkp/present
+    ?issuer_pk={{issuer_pk}}
     &issuer_id={{issuer_id}}
     &issuer_key_id={{issuer_key_id}}
 
+{
+    "credential": "{{credential}}",
+    "definition": "{{definition}}",
+    "proving_keys": "{{proving_keys}}"
+}
+
 {{
     exports.proof = response.parsedBody.proof
 }}
 
-GET http://localhost:8000/zkp/verify
-    ?proof={{proof}}
-    &issuer_pk={{issuer_pk}}
+POST http://localhost:8000/zkp/verify
+    ?issuer_pk={{issuer_pk}}
     &verifying_keys={{verifying_keys}}
     &definition={{definition}}
     &issuer_id={{issuer_id}}
-    &issuer_key_id={{issuer_key_id}}
\ No newline at end of file
+    &issuer_key_id={{issuer_key_id}}
+
+{{proof}}
\ No newline at end of file
diff --git a/next-gen-signing-service/src/main.rs b/next-gen-signing-service/src/main.rs
index 1295c70..764fb2e 100644
--- a/next-gen-signing-service/src/main.rs
+++ b/next-gen-signing-service/src/main.rs
@@ -82,7 +82,7 @@ mod zkp_routes {
         Engine, BASE64_URL_SAFE_NO_PAD,
     };
     use rand::rngs::OsRng;
-    use rocket::{get, serde::json::Json};
+    use rocket::{get, post, serde::json::Json};
     use serde_json::{json, Value};
 
     use crate::KeyPair;
@@ -100,7 +100,10 @@ mod zkp_routes {
         Json(key_pair)
     }
 
-    #[get("/issue?<data>&<issuer_pk>&<issuer_sk>&<issuer_id>&<issuer_key_id>&<expiry_months>")]
+    #[post(
+        "/issue?<issuer_pk>&<issuer_sk>&<issuer_id>&<issuer_key_id>&<expiry_months>",
+        data = "<data>"
+    )]
     pub async fn issue(
         data: String,
         issuer_pk: String,
@@ -146,20 +149,19 @@ mod zkp_routes {
         Json(circuits)
     }
 
-    #[get(
-        "/present?<credential>&<definition>&<proving_keys>&<issuer_pk>&<issuer_id>&<issuer_key_id>"
-    )]
+    #[post("/present?<issuer_pk>&<issuer_id>&<issuer_key_id>", data = "<data>")]
     pub async fn present(
-        credential: String,
-        definition: String,
-        proving_keys: String,
+        data: Json<Value>,
         issuer_pk: String,
         issuer_id: String,
         issuer_key_id: String,
     ) -> Json<Value> {
         let mut rng = OsRng;
 
-        println!("{credential}");
+        let credential = data["credential"].as_str().unwrap().to_string();
+        let definition = data["definition"].as_str().unwrap().to_string();
+        let proving_keys = data["proving_keys"].as_str().unwrap().to_string();
+
         let credential = zkp::Credential::deserialize_encoded(&credential);
 
         let reqs = {
@@ -190,7 +192,10 @@ mod zkp_routes {
         }))
     }
 
-    #[get("/verify?<proof>&<issuer_pk>&<verifying_keys>&<definition>&<issuer_id>&<issuer_key_id>")]
+    #[post(
+        "/verify?<issuer_pk>&<verifying_keys>&<definition>&<issuer_id>&<issuer_key_id>",
+        data = "<proof>"
+    )]
     pub async fn verify(
         proof: String,
         issuer_pk: String,