diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 445fa2c..07c30b7 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -29,5 +29,6 @@ jobs:
           -o foo \
           --annotate-matches \
           --write-pin \
+          --disable-telemetry-i-dont-want-to-improve-sage \
           tests/config-cli.json \
           tests/*.mzML
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 834897c..2e425b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 - Support for semi-enzymatic digests (`database.enzyme.semi_enzymatic` parameter)
+- Ability to directly export matched fragment ions (e.g. for spectral library or rescoring) with the `--annotate-matches` CLI option. This is compatible with the `--parquet` CLI option as well. Annotations will be written to `matched_fragments.sage.tsv` or `matched_fragments.sage.parquet`
+- Sage sends basic telemetry data (version of Sage, run time, OS, # of CPU cores, # of peptides in database, whether LFQ is used) to a remote server. No information about your actual data is sent - e.g. identifications, quantities, organism, or modifications are NOT tracked or reported.  This data will be used to help focus efforts on improving Sage and figuring which features are most used. Please take a look at `crates/sage-cli/src/telemetry.rs` to see exactly what is sent! You can disable sending telemetry data  by using the `--disable-telemetry-i-dont-want-to-improve-sage` CLI flag.
+### Changed
+- Modified visibility on some crate internals to support the [sagepy project](https://github.com/theGreatHerrLebert/sagepy)
+- Added `psm_id` field to various output files to match the new `--annotate-matches` option.
+### Removed
+- Removed the `ms1_intensity` field from CSV output, since it is essentially useless
+
 
 ## [v0.14.4]
 ### Added
diff --git a/Cargo.lock b/Cargo.lock
index 5859a1c..a463e60 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -222,7 +222,7 @@ dependencies = [
  "hex",
  "http",
  "hyper",
- "ring",
+ "ring 0.16.20",
  "time",
  "tokio",
  "tower",
@@ -446,7 +446,7 @@ dependencies = [
  "http",
  "http-body",
  "hyper",
- "hyper-rustls",
+ "hyper-rustls 0.23.2",
  "lazy_static",
  "pin-project-lite",
  "serde",
@@ -943,6 +943,15 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7268b386296a025e474d5140678f75d6de9493ae55a5d709eeb9dd08149945e1"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.8.4"
@@ -1286,10 +1295,24 @@ dependencies = [
  "http",
  "hyper",
  "log",
- "rustls",
+ "rustls 0.20.8",
  "rustls-native-certs",
  "tokio",
- "tokio-rustls",
+ "tokio-rustls 0.23.4",
+]
+
+[[package]]
+name = "hyper-rustls"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec3efd23720e2049821a693cbc7e65ea87c72f1c58ff2f9522ff332b1491e590"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "rustls 0.21.9",
+ "tokio",
+ "tokio-rustls 0.24.1",
 ]
 
 [[package]]
@@ -1350,6 +1373,12 @@ version = "3.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8bb03732005da905c88227371639bf1ad885cc712789c011c31c5fb3ab3ccf02"
 
+[[package]]
+name = "ipnet"
+version = "2.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
+
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -1555,6 +1584,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.5.4"
@@ -1576,6 +1611,15 @@ dependencies = [
  "windows-sys 0.42.0",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8a3895c6391c39d7fe7ebc444a87eb2991b2a0bc718fdabd071eec617fc68e4"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "num"
 version = "0.4.1"
@@ -1993,6 +2037,45 @@ version = "0.6.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
 
+[[package]]
+name = "reqwest"
+version = "0.11.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cde824a14b7c14f85caff81225f411faacc04a2013f41670f41443742b1c1c55"
+dependencies = [
+ "base64 0.21.0",
+ "bytes",
+ "encoding_rs",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "hyper",
+ "hyper-rustls 0.24.2",
+ "ipnet",
+ "js-sys",
+ "log",
+ "mime",
+ "once_cell",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustls 0.21.9",
+ "rustls-pemfile",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "tokio",
+ "tokio-rustls 0.24.1",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "webpki-roots",
+ "winreg",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -2002,12 +2085,26 @@ dependencies = [
  "cc",
  "libc",
  "once_cell",
- "spin",
- "untrusted",
+ "spin 0.5.2",
+ "untrusted 0.7.1",
  "web-sys",
  "winapi",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9babe80d5c16becf6594aa32ad2be8fe08498e7ae60b77de8df700e67f191d7e"
+dependencies = [
+ "cc",
+ "getrandom",
+ "libc",
+ "spin 0.9.8",
+ "untrusted 0.9.0",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "roxmltree"
 version = "0.14.1"
@@ -2047,11 +2144,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fff78fc74d175294f4e83b28343315ffcfb114b156f0185e9741cb5570f50e2f"
 dependencies = [
  "log",
- "ring",
+ "ring 0.16.20",
  "sct",
  "webpki",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.21.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "629648aced5775d558af50b2b4c7b02983a04b312126d45eeead26e7caa498b9"
+dependencies = [
+ "log",
+ "ring 0.17.3",
+ "rustls-webpki",
+ "sct",
+]
+
 [[package]]
 name = "rustls-native-certs"
 version = "0.6.2"
@@ -2073,6 +2182,16 @@ dependencies = [
  "base64 0.21.0",
 ]
 
+[[package]]
+name = "rustls-webpki"
+version = "0.101.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
+dependencies = [
+ "ring 0.17.3",
+ "untrusted 0.9.0",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.11"
@@ -2098,6 +2217,7 @@ dependencies = [
  "sage-core",
  "serde",
  "serde_json",
+ "sysinfo",
 ]
 
 [[package]]
@@ -2116,6 +2236,7 @@ dependencies = [
  "parquet 44.0.0",
  "quick-xml",
  "rayon",
+ "reqwest",
  "sage-core",
  "serde",
  "serde_json",
@@ -2161,8 +2282,8 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d53dcdb7c9f8158937a7981b48accfd39a43af418591a5d008c7b22b5e1b7ca4"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
 ]
 
 [[package]]
@@ -2231,6 +2352,18 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
+dependencies = [
+ "form_urlencoded",
+ "itoa 1.0.4",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.5"
@@ -2290,6 +2423,12 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -2319,6 +2458,21 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "sysinfo"
+version = "0.29.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd727fc423c2060f6c92d9534cef765c65a6ed3f428a03d7def74a8c4348e666"
+dependencies = [
+ "cfg-if",
+ "core-foundation-sys",
+ "libc",
+ "ntapi",
+ "once_cell",
+ "rayon",
+ "winapi",
+]
+
 [[package]]
 name = "termcolor"
 version = "1.1.3"
@@ -2461,11 +2615,21 @@ version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c43ee83903113e03984cb9e5cebe6c04a5116269e900e3ddba8f068a62adda59"
 dependencies = [
- "rustls",
+ "rustls 0.20.8",
  "tokio",
  "webpki",
 ]
 
+[[package]]
+name = "tokio-rustls"
+version = "0.24.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
+dependencies = [
+ "rustls 0.21.9",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-stream"
 version = "0.1.11"
@@ -2616,6 +2780,12 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "url"
 version = "2.3.1"
@@ -2692,6 +2862,18 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23639446165ca5a5de86ae1d8896b737ae80319560fbaa4c2887b7da6e7ebd7d"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.83"
@@ -2737,8 +2919,17 @@ version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f095d78192e208183081cc07bc5515ef55216397af48b873e5edcd72637fa1bd"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.22.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
+dependencies = [
+ "webpki",
 ]
 
 [[package]]
@@ -2818,6 +3009,15 @@ dependencies = [
  "windows-targets 0.42.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.1"
@@ -2962,6 +3162,15 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 
+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "xmlparser"
 version = "0.13.5"
diff --git a/crates/sage-cli/Cargo.toml b/crates/sage-cli/Cargo.toml
index ec9ac45..26b0aa3 100644
--- a/crates/sage-cli/Cargo.toml
+++ b/crates/sage-cli/Cargo.toml
@@ -30,4 +30,5 @@ rayon = "1.5"
 regex = "1.0"
 ryu = "1.0"
 serde = { version="1.0", features = ["derive"] }
-serde_json = "1.0"
\ No newline at end of file
+serde_json = "1.0"
+sysinfo = "0.29"
\ No newline at end of file
diff --git a/crates/sage-cli/src/main.rs b/crates/sage-cli/src/main.rs
index add4c5c..cb7ee14 100644
--- a/crates/sage-cli/src/main.rs
+++ b/crates/sage-cli/src/main.rs
@@ -14,6 +14,7 @@ use std::time::Instant;
 
 mod input;
 mod output;
+mod telemetry;
 
 struct Runner {
     database: IndexedDatabase,
@@ -238,7 +239,7 @@ impl Runner {
             .collect::<SageResults>()
     }
 
-    pub fn run(mut self, parallel: usize, parquet: bool) -> anyhow::Result<()> {
+    pub fn run(mut self, parallel: usize, parquet: bool) -> anyhow::Result<telemetry::Telemetry> {
         let scorer = Scorer {
             db: &self.database,
             precursor_tol: self.parameters.precursor_tol,
@@ -393,7 +394,15 @@ impl Runner {
         info!("finished in {}s", run_time);
         info!("cite: \"Sage: An Open-Source Tool for Fast Proteomics Searching and Quantification at Scale\" https://doi.org/10.1021/acs.jproteome.3c00486");
 
-        Ok(())
+        let telemetry = telemetry::Telemetry::new(
+            self.parameters,
+            self.database.peptides.len(),
+            self.database.fragments.len(),
+            parquet,
+            run_time,
+        );
+
+        Ok(telemetry)
     }
 }
 
@@ -471,6 +480,12 @@ fn main() -> anyhow::Result<()> {
                 .action(clap::ArgAction::SetTrue)
                 .help("Write percolator-compatible `.pin` output files"),
         )
+        .arg(
+            Arg::new("disable-telemetry")
+                .long("disable-telemetry-i-dont-want-to-improve-sage")
+                .action(clap::ArgAction::SetFalse)
+                .help("Disable sending telemetry data"),
+        )
         .help_template(
             "{usage-heading} {usage}\n\n\
              {about-with-newline}\n\
@@ -485,12 +500,20 @@ fn main() -> anyhow::Result<()> {
         .unwrap_or_else(|| num_cpus::get() as u16 / 2) as usize;
 
     let parquet = matches.get_one::<bool>("parquet").copied().unwrap_or(false);
+    let send_telemetry = matches
+        .get_one::<bool>("disable-telemetry")
+        .copied()
+        .unwrap_or(true);
 
     let input = Input::from_arguments(matches)?;
 
     let runner = input.build().and_then(Runner::new)?;
 
-    runner.run(parallel, parquet)?;
+    let tel = runner.run(parallel, parquet)?;
+
+    if send_telemetry {
+        tel.send();
+    }
 
     Ok(())
 }
diff --git a/crates/sage-cli/src/telemetry.rs b/crates/sage-cli/src/telemetry.rs
new file mode 100644
index 0000000..7f901da
--- /dev/null
+++ b/crates/sage-cli/src/telemetry.rs
@@ -0,0 +1,77 @@
+//! Send a minimal telemetry report
+
+use sage_core::tmt::Isobaric;
+use serde::Serialize;
+use sysinfo::{System, SystemExt};
+
+#[derive(Debug, Serialize)]
+pub struct Telemetry {
+    // Which version of Sage?
+    version: String,
+    // How many peptides are in the fragment index?
+    peptides: usize,
+    // How many fragments are in the index?
+    fragments: usize,
+    // How many files are being processed?
+    files: usize,
+    // How long did analysis take?
+    runtime_secs: u64,
+
+    // Is LFQ used?
+    lfq: bool,
+    // Which kind of TMT tags are used, if any?
+    tmt: Option<Isobaric>,
+    // Are results written in parquet format?
+    parquet: bool,
+
+    // Details about the operating system and computer:
+    // - Which OS?
+    // - Total memory available
+    // - Number of CPU cores
+    os_name: String,
+    total_memory: u64,
+    cpus: usize,
+}
+
+impl Telemetry {
+    pub fn new(
+        settings: crate::input::Search,
+        peptides: usize,
+        fragments: usize,
+        parquet: bool,
+        runtime_secs: u64,
+    ) -> Telemetry {
+        let mut system = System::default();
+        system.refresh_all();
+
+        Telemetry {
+            version: settings.version,
+            peptides,
+            fragments,
+            files: settings.mzml_paths.len(),
+            runtime_secs,
+            lfq: settings.quant.lfq,
+            tmt: settings.quant.tmt,
+            parquet,
+            os_name: system.long_os_version().unwrap_or_default(),
+            total_memory: system.total_memory(),
+            cpus: num_cpus::get(),
+        }
+    }
+
+    pub fn send(self) {
+        log::trace!("sending telemetry...");
+        // doesn't matter if it fails
+        match sage_cloudpath::util::send_data(
+            "https://pax3h44gubc6o5ci23knddnw2i0qnuaz.lambda-url.us-west-2.on.aws/",
+            &self,
+        ) {
+            Ok(_) => {
+                log::trace!("telemetry data sent successfully!")
+            }
+            Err(e) => {
+                log::trace!("error while sending telemetry: {}", e)
+            }
+        }
+    }
+}
diff --git a/crates/sage-cloudpath/Cargo.toml b/crates/sage-cloudpath/Cargo.toml
index b275e79..a6a2f23 100644
--- a/crates/sage-cloudpath/Cargo.toml
+++ b/crates/sage-cloudpath/Cargo.toml
@@ -25,6 +25,7 @@ tokio = { version = "1.0", features = ["fs", "io-util", "rt", "macros"] }
 quick-xml = { version = "0.30.0", features = ["async-tokio"] }
 timsrust = "0.2.0"
 rayon = "1.5"
+reqwest = { version = "0.11", features = ["json", "rustls-tls"], default-features = false }
 
 serde = { version="1.0", features = ["derive"] }
 serde_json = "1.0"
diff --git a/crates/sage-cloudpath/src/util.rs b/crates/sage-cloudpath/src/util.rs
index 1d6eb2f..e7ff209 100644
--- a/crates/sage-cloudpath/src/util.rs
+++ b/crates/sage-cloudpath/src/util.rs
@@ -1,5 +1,6 @@
 use crate::{read_and_execute, Error};
 use sage_core::spectrum::RawSpectrum;
+use serde::Serialize;
 use tokio::io::AsyncReadExt;
 
 pub fn read_mzml<S: AsRef<str>>(
@@ -55,3 +56,20 @@ where
         Ok(serde_json::from_str(&contents)?)
     })
 }
+
+/// Send telemetry data
+pub fn send_data<T>(url: &str, data: &T) -> Result<(), Box<dyn std::error::Error + Send + Sync>>
+where
+    T: Serialize,
+{
+    let rt = tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()?;
+
+    rt.block_on(async {
+        let client = reqwest::ClientBuilder::default().https_only(true).build()?;
+        let res = client.post(url).json(data).send().await?;
+        res.error_for_status()?;
+        Ok(())
+    })
+}