diff --git a/Cargo.lock b/Cargo.lock
index 8797a72d..37efbc5f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,6 +10,10 @@ dependencies = [
  "r2d2_postgres 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rererouter 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tilejson 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -89,6 +93,11 @@ dependencies = [
  "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "dtoa"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "fake-simd"
 version = "0.1.2"
@@ -196,6 +205,11 @@ dependencies = [
  "url 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "itoa"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "kernel32-sys"
 version = "0.2.2"
@@ -272,6 +286,11 @@ name = "nodrop"
 version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "num-traits"
+version = "0.1.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "num_cpus"
 version = "1.7.0"
@@ -380,6 +399,11 @@ dependencies = [
  "uuid 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "quote"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "r2d2"
 version = "0.7.4"
@@ -453,6 +477,41 @@ dependencies = [
  "antidote 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "serde"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "serde_derive"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive_internals 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "serde_derive_internals"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "sha2"
 version = "0.6.0"
@@ -479,6 +538,24 @@ dependencies = [
  "unicode-normalization 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "syn"
+version = "0.11.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "synom"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "thread_local"
 version = "0.3.4"
@@ -488,6 +565,16 @@ dependencies = [
  "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tilejson"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "time"
 version = "0.1.38"
@@ -543,6 +630,11 @@ name = "unicode-normalization"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unreachable"
 version = "1.0.0"
@@ -611,6 +703,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
 "checksum crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "779015233ac67d65098614aec748ac1c756ab6677fa2e14cf8b37c08dfed1198"
 "checksum digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e5b29bf156f3f4b3c4f610a25ff69370616ae6e0657d416de22645483e72af0a"
+"checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
 "checksum fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 "checksum fallible-iterator 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "5d48ab1bc11a086628e8cc0cc2c2dc200b884ac05c4b48fb71d6036b6999ff1d"
 "checksum fuchsia-zircon 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f6c0581a4e363262e52b87f59ee2afe3415361c6ec35e665924eb08afe8ff159"
@@ -623,6 +716,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum idna 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "014b298351066f1512874135335d62a789ffe78a9974f94b43ed5621951eaf7d"
 "checksum iovec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b6e8b9c2247fcf6c6a1151f1156932be5606c9fd6f55a2d7f9fc1cb29386b2f7"
 "checksum iron 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d8e17268922834707e1c29e8badbf9c712c9c43378e1b6a3388946baff10be2"
+"checksum itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
@@ -635,6 +729,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum mime_guess 1.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "dc7e82a15629bb4ecd9e72365bf33d1382be91e030f820edb8e2a21c02430da8"
 "checksum modifier 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "41f5c9112cb662acd3b204077e0de5bc66305fa8df65c8019d5adb10e9ab6e58"
 "checksum nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9a2228dca57108069a5262f2ed8bd2e82496d2e074a06d1ccc7ce1687b6ae0a2"
+"checksum num-traits 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "99843c856d68d8b4313b03a17e33c4bb42ae8f6610ea81b28abe076ac721b9b0"
 "checksum num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "514f0d73e64be53ff320680ca671b64fe3fb91da01e1ae2ddc99eb51d453b20d"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
 "checksum persistent 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8e8fa0009c4f3d350281309909c618abddf10bb7e3145f28410782f6a5ec74c5"
@@ -646,6 +741,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum postgres 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6e6dbad8297d43a1319817c45c43fd2cfd6a148767f51baedcdce732635c6526"
 "checksum postgres-protocol 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2b5cf13fd1f61ca10b374a44b7feb0636fce67cd3bd42f925f9186b0e7ccec7b"
 "checksum postgres-shared 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "22fcb88c55471615fea5217b41ab59df5a00665edb4e92f67c35119b7e8948ed"
+"checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum r2d2 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "2c8284508b38df440f8f3527395e23c4780b22f74226b270daf58fee38e4bcce"
 "checksum r2d2_postgres 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1f8b19a6ea63676566dd11085217fed98866ca833cea7f6f29be8c2244e0560e"
 "checksum rand 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)" = "6475140dfd8655aeb72e1fd4b7a1cc1c202be65d71669476e392fe62532b9edd"
@@ -655,10 +751,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum rererouter 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6101256368bbe7fcafa77c01b834cebfc41c5832dffb81eee43867abfc4a2621"
 "checksum safemem 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e27a8b19b835f7aea908818e871f5cc3a5a186550c30773be987e155e8163d8f"
 "checksum scheduled-thread-pool 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d9fbe48ead32343b76f544c85953bf260ed39219a8bbbb62cd85f6a00f9644f"
+"checksum serde 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "6eda663e865517ee783b0891a3f6eb3a253e0b0dabb46418969ee9635beadd9e"
+"checksum serde_derive 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "652bc323d694dc925829725ec6c890156d8e70ae5202919869cb00fe2eff3788"
+"checksum serde_derive_internals 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "32f1926285523b2db55df263d2aa4eb69ddcfa7a7eade6430323637866b513ab"
+"checksum serde_json 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "e4586746d1974a030c48919731ecffd0ed28d0c40749d0d18d43b3a7d6c9b20e"
 "checksum sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d963c78ce367df26d7ea8b8cc655c651b42e8a1e584e869c1e17dae3ccb116a"
 "checksum siphasher 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0df90a788073e8d0235a67e50441d47db7c8ad9debd91cbf43736a2a92d36537"
 "checksum stringprep 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8ee348cb74b87454fff4b551cbf727025810a004f88aeacae7f85b87f4e9a1c1"
+"checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
+"checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
 "checksum thread_local 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "1697c4b57aeeb7a536b647165a2825faddffb1d3bad386d507709bd51a90bb14"
+"checksum tilejson 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2117abf55755175b050f820472ddcd7762d7c60764af8bdfa828734276841847"
 "checksum time 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)" = "d5d788d3aa77bc0ef3e9621256885555368b47bd495c13dd2e7413c89f845520"
 "checksum traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
 "checksum typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1410f6f91f21d1612654e7cc69193b0334f909dcf2c790c4826254fbb86f8887"
@@ -667,6 +770,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum unicase 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7f4765f83163b74f957c797ad9253caf97f103fb064d3999aea9568d09fc8a33"
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
 "checksum unicode-normalization 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "51ccda9ef9efa3f7ef5d91e8f9b83bbe6955f9bf86aec89d5cce2c874625920f"
+"checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
 "checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 "checksum unsafe-any 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f30360d7979f5e9c6e6cea48af192ea8fab4afb3cf72597154b8f08935bc9c7f"
 "checksum url 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fa35e768d4daf1d85733418a49fb42e10d7f633e394fccab4ab7aba897053fe2"
diff --git a/Cargo.toml b/Cargo.toml
index ad454d13..f490beda 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,10 @@ iron = "0.6.0"
 rererouter = "0.1.1"
 persistent = "0.4.0"
 lazy_static = "0.2.11"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
+tilejson = "0.1.0"
 r2d2 = "0.7.4"
 r2d2_postgres = "0.13.0"
 postgres = { version = "0.15.1", features = ["with-time", "with-uuid"] }
\ No newline at end of file
diff --git a/src/db.rs b/src/db.rs
index d6357473..4512068e 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -32,7 +32,7 @@ pub fn get_tile(conn: PostgresConnection, tileset: &Tileset, z: &i32, x: &i32, y
     Ok(tile)
 }
 
-#[derive(Debug)]
+#[derive(Serialize, Debug)]
 pub struct Tileset {
     schema: String,
     table: String,
@@ -56,7 +56,7 @@ pub fn get_tilesets(conn: PostgresConnection) -> Result<HashMap<String, Tileset>
     ";
 
     let default_extent = 4096;
-    let default_buffer = 256;
+    let default_buffer = 0; // 256
     let default_clip_geom = true;
 
     let mut tilesets = HashMap::new();
diff --git a/src/main.rs b/src/main.rs
index a9b98ffa..08527eac 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,6 +6,14 @@ extern crate r2d2;
 extern crate r2d2_postgres;
 // #[macro_use] extern crate lazy_static;
 
+#[macro_use]
+extern crate serde_derive;
+
+extern crate serde;
+extern crate serde_json;
+
+extern crate tilejson;
+
 use std::env;
 use persistent::Read;
 use rererouter::RouterBuilder;
diff --git a/src/routes.rs b/src/routes.rs
index 50bb4778..fa62aaf1 100644
--- a/src/routes.rs
+++ b/src/routes.rs
@@ -2,8 +2,10 @@ use regex::Captures;
 use iron::prelude::{Plugin};
 use iron::{status, mime, Request, Response, IronResult};
 use persistent::Read;
+use serde_json;
 
 use super::db;
+use tilejson::TileJSONBuilder;
 
 pub fn index(_req: &mut Request, _caps: Captures) -> IronResult<Response> {
   println!("index.json");
@@ -11,7 +13,14 @@ pub fn index(_req: &mut Request, _caps: Captures) -> IronResult<Response> {
 }
 
 pub fn tileset(_req: &mut Request, _caps: Captures) -> IronResult<Response> {
-    Ok(Response::with((status::Ok, "{}")))
+    let mut tilejson_builder = TileJSONBuilder::new();
+
+    tilejson_builder.name("some tileset!!11");
+
+    let tilejson = tilejson_builder.finalize();
+    let serialized_tilejson = serde_json::to_string(&tilejson).unwrap();
+
+    Ok(Response::with((status::Ok, serialized_tilejson)))
 }
 
 pub fn tile(req: &mut Request, caps: Captures) -> IronResult<Response> {