diff --git a/.rustfmt.toml b/.rustfmt.toml
new file mode 100644
index 0000000..4d7dd9e
--- /dev/null
+++ b/.rustfmt.toml
@@ -0,0 +1,3 @@
+imports_granularity = "Crate"
+newline_style = "Unix"
+group_imports = "StdExternalCrate"
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index faa541c..33a6fa3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,30 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "addr2line"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9ecd88a8c8378ca913a680cd98f0f13ac67383d35993f86c90a70e3f137816b"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -19,12 +43,57 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "backtrace"
+version = "0.3.65"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11a17d453482a265fd5f8479f2a3f405566e6ca627837aaddb85af8b1ab8ef61"
+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
+[[package]]
+name = "base64"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bumpalo"
+version = "3.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a45a46ab1f2412e53d3a0ade76ffad2025804294569aae387231a0cd6e0899"
+
+[[package]]
+name = "bytes"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+
+[[package]]
+name = "cc"
+version = "1.0.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "clap"
 version = "3.1.18"
@@ -33,13 +102,28 @@ checksum = "d2dbdf4bdacb33466e854ce889eee8dfd5729abf7ccd7664d0a2d60cd384440b"
 dependencies = [
  "atty",
  "bitflags",
+ "clap_derive",
  "clap_lex",
  "indexmap",
+ "lazy_static",
  "strsim",
  "termcolor",
  "textwrap",
 ]
 
+[[package]]
+name = "clap_derive"
+version = "3.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25320346e922cffe59c0bbc5410c8d8784509efb321488971081313cb1e1a33c"
+dependencies = [
+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "clap_lex"
 version = "0.2.0"
@@ -49,12 +133,193 @@ dependencies = [
  "os_str_bytes",
 ]
 
+[[package]]
+name = "color-eyre"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ebf286c900a6d5867aeff75cfee3192857bb7f24b547d4f0df2ed6baa812c90"
+dependencies = [
+ "backtrace",
+ "color-spantrace",
+ "eyre",
+ "indenter",
+ "once_cell",
+ "owo-colors",
+ "tracing-error",
+]
+
+[[package]]
+name = "color-spantrace"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ba75b3d9449ecdccb27ecbc479fdc0b87fa2dd43d2f8298f9bf0e59aacc8dce"
+dependencies = [
+ "once_cell",
+ "owo-colors",
+ "tracing-core",
+ "tracing-error",
+]
+
+[[package]]
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+checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
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+
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+
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+]
+
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+
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+checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
+dependencies = [
+ "matches",
+ "percent-encoding",
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+
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+checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+dependencies = [
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+
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+
+[[package]]
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+
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+
+[[package]]
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+checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
+
+[[package]]
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+checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
+dependencies = [
+ "futures-core",
+ "futures-io",
+ "futures-task",
+ "memchr",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
+]
+
+[[package]]
+name = "gimli"
+version = "0.26.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78cc372d058dcf6d5ecd98510e7fbc9e5aec4d21de70f65fea8fecebcd881bd4"
+
+[[package]]
+name = "h2"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37a82c6d637fc9515a4694bbf1cb2457b79d81ce52b3108bdeea58b07dd34a57"
+dependencies = [
+ "bytes",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
 
+[[package]]
+name = "heck"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -64,6 +329,107 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "http"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff8670570af52249509a86f5e3e18a08c60b177071826898fde8997cf5f6bfbb"
+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa",
+]
+
+[[package]]
+name = "http-body"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ff4f84919677303da5f147645dbea6b1881f368d03ac84e1dc09031ebd7b2c6"
+dependencies = [
+ "bytes",
+ "http",
+ "pin-project-lite",
+]
+
+[[package]]
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+version = "1.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "496ce29bb5a52785b44e0f7ca2847ae0bb839c9bd28f69acac9b99d461c0c04c"
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
+
+[[package]]
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+checksum = "b26ae0a80afebe130861d90abf98e3814a4f28a4c6ffeb5ab8ebb2be311e0ef2"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "httparse",
+ "httpdate",
+ "itoa",
+ "pin-project-lite",
+ "socket2",
+ "tokio",
+ "tower-service",
+ "tracing",
+ "want",
+]
+
+[[package]]
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+checksum = "d87c48c02e0dc5e3b849a2041db3029fd066650f8f717c07bf8ed78ccb895cac"
+dependencies = [
+ "http",
+ "hyper",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+]
+
+[[package]]
+name = "hyper-tls"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
+dependencies = [
+ "bytes",
+ "hyper",
+ "native-tls",
+ "tokio",
+ "tokio-native-tls",
+]
+
+[[package]]
+name = "idna"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "418a0a6fab821475f634efe3ccc45c013f742efe03d853e8d3355d5cb850ecf8"
+dependencies = [
+ "matches",
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
+[[package]]
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+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce23b50ad8242c51a442f3ff322d56b02f08852c77e4c0b4d3fd684abc89c683"
+
 [[package]]
 name = "indexmap"
 version = "1.8.1"
@@ -75,26 +441,207 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
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+
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+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
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+[[package]]
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+checksum = "671a26f820db17c2a2750743f1dd03bafd15b98c9f30c7c2628c024c05d73397"
+dependencies = [
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+
 [[package]]
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+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
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+]
+
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+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata",
+]
+
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+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
 [[package]]
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 dependencies = [
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+ "color-eyre",
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+ "reqwest",
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+ "tracing-subscriber",
+ "tracing-tree",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27370197c907c55e3f1a9fbe26f44e937fe6451368324e009cba39e139dc08ad"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53e04185bfa3a779273da532f5025e33398409573f348985af9a1cbf3774d3f4"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f741de44b75e14c35df886aff5f1eb73aa114fa5d4d00dcd37b5e01259bf3b2"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17cae7ff784d7e83a2fe7611cfe766ecf034111b49deb850a3dc7699c08251f5"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99ec0dc7a4756fffc231aab1b9f2f578d23cd391390ab27f952ae0c9b3ece20b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d554b7f530dee5964d9a9468d95c1f8b8acae4f282807e7d27d4b03099a46744"
+
+[[package]]
+name = "web-sys"
+version = "0.3.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b17e741662c70c8bd24ac5c5b18de314a2c26c32bf8346ee1e6f53de919c283"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "webpki"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f095d78192e208183081cc07bc5515ef55216397af48b873e5edcd72637fa1bd"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.22.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44d8de8415c823c8abd270ad483c6feeac771fad964890779f9a8cb24fbbc1bf"
+dependencies = [
+ "webpki",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -226,3 +1425,55 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
+
+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 3c7568c..6fb14f1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,13 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = "3.1.18"
+clap = { version = "3.1.18", features = ["derive"] }
+color-eyre = "0.6.1"
 indexmap = { version = "1.8.1", features = ["serde"] }
+reqwest = { version = "0.11.10", features = ["blocking", "rustls-tls", "json"] }
 serde = { version = "1.0.137", features = ["derive"] }
 serde_json = "1.0.81"
+tracing = "0.1.34"
+tracing-forest = { version = "0.1.4", features = ["env-filter"] }
+tracing-subscriber = { version = "0.3.11", features = ["env-filter"] }
+tracing-tree = "0.2.0"
diff --git a/src/download.rs b/src/download.rs
new file mode 100644
index 0000000..fdf00b4
--- /dev/null
+++ b/src/download.rs
@@ -0,0 +1,118 @@
+#![allow(dead_code)]
+
+use color_eyre::Result;
+use indexmap::IndexMap;
+use reqwest::blocking::Client;
+use serde::Deserialize;
+use tracing::{error, info};
+
+#[derive(Debug, Deserialize)]
+struct Person {
+    name: String,
+    url: Option<String>,
+    email: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+struct Bugs {
+    url: String,
+}
+
+#[derive(Debug, Deserialize)]
+struct Repository {
+    r#type: String,
+    url: String,
+}
+
+#[derive(Debug, Deserialize)]
+struct Dist {
+    shasum: String,
+    tarball: String,
+}
+
+// todo: this is actually just a package.json with extra stuff
+#[derive(Debug, Deserialize)]
+struct VersionMeta {
+    _from: Option<String>,
+    _id: String,
+    #[serde(rename = "_nodeVersion")]
+    _node_version: String,
+    #[serde(rename = "_npmUser")]
+    _npm_user: Person,
+    #[serde(rename = "_npmVersion")]
+    _npm_version: String,
+    _shasum: Option<String>,
+    author: Person,
+    bugs: Bugs,
+    dependencies: IndexMap<String, String>,
+    #[serde(rename = "devDependencies")]
+    dev_dependencies: IndexMap<String, String>,
+    dist: Dist,
+    engines: IndexMap<String, String>,
+    files: Vec<String>,
+    homepage: String,
+    keywords: Vec<String>,
+    license: String,
+    main: String,
+    maintainers: Vec<Person>,
+    name: String,
+    repository: Repository,
+    scripts: IndexMap<String, String>,
+    version: String,
+}
+
+#[derive(Debug, Deserialize)]
+struct PackageMeta {
+    _id: String,
+    _rev: String,
+    author: Person,
+    bugs: Bugs,
+    #[serde(default = "Vec::new")]
+    contributors: Vec<Person>,
+    description: String,
+    #[serde(rename = "dist-tags")]
+    dist_tags: IndexMap<String, String>,
+    homepage: String,
+    keywords: Vec<String>,
+    license: String,
+    maintainers: Vec<Person>,
+    name: String,
+    readme: String,
+    #[serde(rename = "readmeFilename")]
+    readme_filename: String,
+    repository: Repository,
+    time: IndexMap<String, String>,
+    users: IndexMap<String, bool>,
+    versions: IndexMap<String, VersionMeta>,
+}
+
+pub struct NpmClient {
+    reqwest: Client,
+}
+
+const BASE_URL: &str = "https://registry.npmjs.org";
+
+impl NpmClient {
+    pub fn new() -> Self {
+        let reqwest = Client::new();
+        Self { reqwest }
+    }
+
+    #[tracing::instrument(skip(self))]
+    pub fn inspect_package(&self, name: &str) -> Result<()> {
+        let res = self.reqwest.get(format!("{BASE_URL}/{name}")).send()?;
+        let code = res.status();
+        let body = res.text()?;
+        let meta = serde_json::from_str::<PackageMeta>(&body);
+        if let Err(err) = meta {
+            error!(?err, "error");
+            let col = err.column();
+            let after = &body[col..][..50];
+            let before = &body[col - 50..col];
+            error!(%before, %after, "err");
+        }
+
+        info!(?code, "Received response");
+        Ok(())
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 37f8994..1a4545e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,44 @@
+use std::fs;
+
+use color_eyre::{eyre::WrapErr, Result};
+use tracing::{debug, metadata::LevelFilter};
+use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt, EnvFilter, Registry};
+
+use crate::{download::NpmClient, manifest::PackageJson};
+
+mod download;
 mod manifest;
 
-fn main() {
-    let manifest = "package.json";
+fn main() -> Result<()> {
+    color_eyre::install()?;
+    setup_tracing()?;
+
+    let manifest = "testing/package.json";
+    let manifest = fs::read_to_string(manifest).wrap_err("Opening package.json file")?;
+
+    let manifest: PackageJson = serde_json::from_str(&manifest)?;
+
+    debug!(?manifest, "Read manifest");
+
+    let client = NpmClient::new();
+
+    for (name, _) in &manifest.dependencies {
+        client.inspect_package(name)?;
+    }
+
+    Ok(())
+}
+
+fn setup_tracing() -> Result<()> {
+    let registry = Registry::default().with(
+        EnvFilter::builder()
+            .with_default_directive(LevelFilter::INFO.into())
+            .from_env()?,
+    );
+    let tree_layer = tracing_tree::HierarchicalLayer::new(2)
+        .with_targets(true)
+        .with_bracketed_fields(true);
+
+    registry.with(tree_layer).init();
+    Ok(())
 }
diff --git a/src/manifest.rs b/src/manifest.rs
new file mode 100644
index 0000000..01bdf1e
--- /dev/null
+++ b/src/manifest.rs
@@ -0,0 +1,16 @@
+use indexmap::map::IndexMap;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PackageJson {
+    pub name: String,
+    pub version: String,
+    pub private: Option<bool>,
+    #[serde(default = "IndexMap::new")]
+    pub scripts: IndexMap<String, String>,
+    #[serde(default = "IndexMap::new")]
+    pub dependencies: IndexMap<String, String>,
+    #[serde(default = "IndexMap::new")]
+    pub dev_dependencies: IndexMap<String, String>,
+}