diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0c32b30722..c72c5b07a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,6 +115,26 @@ jobs:
               coatjava.tar.gz
               clara.tar.gz
 
+  dependency_info:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - name: Set up JDK
+        uses: actions/setup-java@v6.0.1
+        with:
+          java-version: ${{ env.JAVA_VERSION }}
+          distribution: ${{ env.java_distribution }}
+          # NOTE: do not use `cache: maven` here, so stale `_remote.repositories` data aren't read
+      - name: build
+        run: |
+          ./build-coatjava.sh --no-aux --no-progress --quiet -T${{ env.nthreads }}
+      - name: collect info
+        run: libexec/dependency-info.rb
+      - name: print dependency trees
+        run: cat target/info/trees.txt
+      - name: print dependency repository sources
+        run: cat target/info/repos.yaml
+
   # tests
   #############################################################################
 
diff --git a/common-tools/coat-libs/pom.xml b/common-tools/coat-libs/pom.xml
index d8c6659cf2..e9a5384fed 100644
--- a/common-tools/coat-libs/pom.xml
+++ b/common-tools/coat-libs/pom.xml
@@ -13,14 +13,6 @@
     <version>14.2.1-SNAPSHOT</version>
   </parent>
 
-  <repositories>
-    <repository>
-      <id>freehep-repo-public</id>
-      <url>https://clasweb.jlab.org/.clas12maven/</url>
-      <!--<url>https://srs.slac.stanford.edu/nexus/content/groups/freehep-maven2-public/</url>-->
-    </repository>
-  </repositories>
-
   <dependencies>
 
     <dependency>
diff --git a/libexec/dependency-info.rb b/libexec/dependency-info.rb
new file mode 100755
index 0000000000..8cce06eb58
--- /dev/null
+++ b/libexec/dependency-info.rb
@@ -0,0 +1,92 @@
+#!/usr/bin/env ruby
+#
+# map dependency to the repository from which it was obtained
+#
+
+require 'yaml'
+require 'fileutils'
+
+TOP_DIR             = File.realpath "#{__dir__}/.."
+OUT_DIR             = "#{TOP_DIR}/target/info"
+CLASSPATH_FILE_NAME = 'dependency-classpath.txt'
+TREE_FILE_NAME      = 'dependency-tree.txt'
+REPO_LOCAL          = 'local'
+REPO_CENTRAL        = 'maven-central'
+
+# get classpath for each module
+system [
+  'mvn',
+  'dependency:build-classpath',
+  "-Dmdep.outputFile='${project.build.directory}/#{CLASSPATH_FILE_NAME}'",
+  '--quiet',
+  "--file #{TOP_DIR}",
+].join ' '
+raise "dependency:build-classpath goal failed" unless $?.success?
+
+# get the list of unique dependency JARs
+jars = []
+Dir.glob("#{TOP_DIR}/**/target/#{CLASSPATH_FILE_NAME}").each do |classpath_file|
+  File.readlines(classpath_file, chomp: true).each do |line|
+    jars << line.split(':')
+  end
+end
+jars.flatten!.uniq!.sort!
+
+# get the remote repos
+repos = {}
+jars.each do |jar_path|
+  # SNAPSHOT normalizer: replace timestamp with 'SNAPSHOT'
+  def normalize(name)
+    name.sub(/\d{8}\.\d{6}-\d+/, 'SNAPSHOT')
+  end
+  # names
+  jar_dir   = File.dirname  jar_path
+  jar_name  = normalize(File.basename jar_path)
+  repo_file = "#{jar_dir}/_remote.repositories"
+  # check if remote repo description exists
+  unless File.exist? repo_file
+    warn "WARNING: #{repo_file} does not exist"
+    next
+  end
+  # get info for this JAR
+  repo_lines = File.readlines(repo_file, chomp: true)
+    .reject { |l| l.start_with?('#') }
+    .select { |l| normalize(l.split('>', 2)[0]) == jar_name }
+  if repo_lines.empty?
+    warn "WARNING: could not find #{jar_name} in #{repo_file}"
+    next
+  end
+  # fill output hash
+  repo_lines.each do |repo_line|
+    repo_id = repo_line.split('>')[1].split('=')[0]
+    repo_id = repo_id.sub /-\h{32,}\z/, '' unless repo_id.nil? # drop the trailing digest (from GitHub `setup-java`'s `settings.xml`)
+    repo = case repo_id
+           when /code.jlab.org-.*/ then 'code.jlab.org'
+           when nil                then REPO_LOCAL
+           when 'central'          then REPO_CENTRAL
+           else repo_id
+           end
+    (repos[repo] ||= []) << jar_path.sub(/^.*.m2\/repository\//,'')
+  end
+end
+
+# dump output as YAML
+FileUtils.mkdir_p OUT_DIR
+OUT_REPOS = "#{OUT_DIR}/repos.yaml"
+File.open(OUT_REPOS, 'w') do |o|
+  o.puts repos
+    .sort_by{ |k,_| [ [REPO_LOCAL, REPO_CENTRAL].index(k) || 2, k] }
+    .to_h
+    .to_yaml
+end
+puts "Wrote #{OUT_REPOS}"
+
+# collect all dependency trees
+OUT_TREES = "#{OUT_DIR}/trees.txt"
+File.open(OUT_TREES, 'w') do |o|
+  Dir.glob("#{TOP_DIR}/**/target/#{TREE_FILE_NAME}").sort.each do |tree_file|
+    o.puts `cat #{tree_file}`
+    o.puts ''
+  end
+end
+puts "Wrote #{OUT_TREES}"
diff --git a/pom.xml b/pom.xml
index 93a1bb8e70..e1fee795a0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,19 +20,19 @@
 
   <repositories>
     <repository>
-      <id>clas12-hipo-java</id>  <!-- `jnp-hipo4` is now built and published from its own repository, https://code.jlab.org/hallb/clas12/hipo-java. Project 919's package registry is public -->
+      <id>code.jlab.org-hipo-java</id>  <!-- `jnp-hipo4` is now built and published from its own repository, https://code.jlab.org/hallb/clas12/hipo-java. Project 919's package registry is public -->
       <url>https://code.jlab.org/api/v4/projects/919/packages/maven</url>
     </repository>
     <repository>
-      <id>clas12-clara-java</id>
+      <id>code.jlab.org-clara-java</id>
       <url>https://code.jlab.org/api/v4/projects/243/packages/maven</url>
     </repository>
     <repository>
-      <id>clas12maven</id>
+      <id>clasweb-clas12maven</id>
       <url>https://clasweb.jlab.org/.clas12maven</url>
     </repository>
     <repository>
-      <id>jnp-maven</id>
+      <id>clasweb-jhep</id>
       <url>https://clasweb.jlab.org/.jhep/maven</url>
     </repository>
   </repositories>