cosocial cities labeler

An atproto labeler that puts a Canadian city badge on accounts that ask for one over Bluesky DMs.

1. Subscribe to @cities.pds.cosocial.ca (the Subscribe button on its profile).
2. Follow it.
3. DM it your city, e.g. Halifax or Richmond, BC. Send remove to clear it.

The labeler polls its DMs, matches the city against data/cities.json, and signs an account label (e.g. halifax-ns), negating any previous one. Labels are stored in SQLite and served over com.atproto.label.subscribeLabels and queryLabels.

src/
  dms.rs       DM polling, onboarding, replies
  cities.rs    city list and matching
  labeler.rs   set_city: negate the old label, apply the new one
  labels.rs    label signing
  server.rs    queryLabels + subscribeLabels (axum, jacquard-axum)
  db.rs        SQLite
  bin/keygen.rs

Built on jacquard for atproto types and XRPC.

Local test

cp .env.example .env      # set LABELER_APP_PASSWORD
cargo run --bin keygen    # paste SIGNING_KEY_HEX into .env
cargo run                 # :4100

rust-toolchain.toml pins the Rust version; rustup installs it on first build.

The labeler account must allow DMs from everyone (Settings → Privacy and security → Chat). DM it from a test account, then check curl 'localhost:4100/xrpc/com.atproto.label.queryLabels?uriPatterns=<did>'.

Labels won't appear in the Bluesky app until the labeler is deployed publicly and its DID document has the #atproto_label key and #atproto_labeler service.