diff --git a/home/.chezmoiscripts/darwin/run_onchange_02_install-packages.sh.tmpl b/home/.chezmoiscripts/darwin/run_onchange_02_install-packages.sh.tmpl
index af79967..fcd636c 100644
--- a/home/.chezmoiscripts/darwin/run_onchange_02_install-packages.sh.tmpl
+++ b/home/.chezmoiscripts/darwin/run_onchange_02_install-packages.sh.tmpl
@@ -1,7 +1,5 @@
 #!/usr/bin/env bash
-{{ $groups := list "shared" }}
-{{ if .personal }}{{ $groups = append $groups "personal" }}{{ end }}
-{{ if .work     }}{{ $groups = append $groups "work"     }}{{ end }}
+{{ $groups := includeTemplate "lib/chezmoi/active-groups.json.tmpl" . | fromJson -}}
 # packages.yaml hash: {{ include ".chezmoidata/packages.yaml" | sha256sum }}
 
 {{ if eq .chezmoi.os "darwin" }}
diff --git a/home/.chezmoiscripts/darwin/run_onchange_03_install-uv-tools.sh.tmpl b/home/.chezmoiscripts/darwin/run_onchange_03_install-uv-tools.sh.tmpl
index 65f455a..e69c052 100644
--- a/home/.chezmoiscripts/darwin/run_onchange_03_install-uv-tools.sh.tmpl
+++ b/home/.chezmoiscripts/darwin/run_onchange_03_install-uv-tools.sh.tmpl
@@ -1,8 +1,6 @@
 #!/usr/bin/env bash
 # uv tools data hash: {{ include ".chezmoidata/uv.yaml" | sha256sum }}
-{{- $groups := list "shared" -}}
-{{- if .personal }}{{ $groups = append $groups "personal" }}{{ end -}}
-{{- if .work }}{{ $groups = append $groups "work" }}{{ end -}}
+{{ $groups := includeTemplate "lib/chezmoi/active-groups.json.tmpl" . | fromJson -}}
 {{- $hasTools := false -}}
 {{- range $groups -}}
 {{- $tools := index $.uv.tools . -}}
diff --git a/home/.chezmoiscripts/darwin/run_onchange_08_install-graphify-skills.sh.tmpl b/home/.chezmoiscripts/darwin/run_onchange_08_install-graphify-skills.sh.tmpl
index aba82d4..89a579e 100644
--- a/home/.chezmoiscripts/darwin/run_onchange_08_install-graphify-skills.sh.tmpl
+++ b/home/.chezmoiscripts/darwin/run_onchange_08_install-graphify-skills.sh.tmpl
@@ -2,15 +2,11 @@
 # @file run_onchange_08_install-graphify-skills.sh
 # @brief Install Graphify agent skills.
 # @description APM data hash: {{ include ".chezmoidata/apm.yaml" | sha256sum }}
+{{- $activeTargets := includeTemplate "lib/chezmoi/active-group-values.json.tmpl" (dict "ctx" . "valuesByGroup" .apm.targets) | fromJson -}}
 {{- $platforms := list -}}
-{{- if .personal -}}
-{{- range (index .apm.targets "shared") -}}
+{{- range $activeTargets -}}
 {{- if eq . "agent-skills" }}{{ $platforms = append $platforms "agents" }}{{- else if eq . "claude" }}{{ $platforms = append $platforms "claude" }}{{- end -}}
 {{- end -}}
-{{- range (index .apm.targets "personal") -}}
-{{- if eq . "agent-skills" }}{{ $platforms = append $platforms "agents" }}{{- else if eq . "claude" }}{{ $platforms = append $platforms "claude" }}{{- end -}}
-{{- end -}}
-{{- end }}
 
 {{ if and (eq .chezmoi.os "darwin") (gt (len $platforms) 0) }}
 {{ template "lib/common/log.sh" . }}
diff --git a/home/.chezmoitemplates/lib/chezmoi/active-group-values.json.tmpl b/home/.chezmoitemplates/lib/chezmoi/active-group-values.json.tmpl
new file mode 100644
index 0000000..4e3e5fb
--- /dev/null
+++ b/home/.chezmoitemplates/lib/chezmoi/active-group-values.json.tmpl
@@ -0,0 +1,11 @@
+{{- $ctx := .ctx -}}
+{{- $valuesByGroup := .valuesByGroup -}}
+{{- $groups := includeTemplate "lib/chezmoi/active-groups.json.tmpl" $ctx | fromJson -}}
+{{- $values := list -}}
+{{- range $groups -}}
+{{- $groupValues := index $valuesByGroup . -}}
+{{- range $groupValues -}}
+{{- $values = append $values . -}}
+{{- end -}}
+{{- end -}}
+{{- $values | toJson -}}
diff --git a/home/.chezmoitemplates/lib/chezmoi/active-groups.json.tmpl b/home/.chezmoitemplates/lib/chezmoi/active-groups.json.tmpl
new file mode 100644
index 0000000..178c6c0
--- /dev/null
+++ b/home/.chezmoitemplates/lib/chezmoi/active-groups.json.tmpl
@@ -0,0 +1,4 @@
+{{- $groups := list "shared" -}}
+{{- if .personal }}{{ $groups = append $groups "personal" }}{{ end -}}
+{{- if .work }}{{ $groups = append $groups "work" }}{{ end -}}
+{{- $groups | toJson -}}
diff --git a/home/dot_apm/apm.yml.tmpl b/home/dot_apm/apm.yml.tmpl
index 9b6d044..d178edc 100644
--- a/home/dot_apm/apm.yml.tmpl
+++ b/home/dot_apm/apm.yml.tmpl
@@ -1,6 +1,4 @@
-{{- $groups := list "shared" -}}
-{{- if .personal }}{{ $groups = append $groups "personal" }}{{ end -}}
-{{- if .work     }}{{ $groups = append $groups "work"     }}{{ end -}}
+{{ $groups := includeTemplate "lib/chezmoi/active-groups.json.tmpl" . | fromJson -}}
 name: development
 version: 1.0.0
 description: APM project for development
diff --git a/home/dot_config/mise/config.toml.tmpl b/home/dot_config/mise/config.toml.tmpl
index a76b2ff..88b2267 100644
--- a/home/dot_config/mise/config.toml.tmpl
+++ b/home/dot_config/mise/config.toml.tmpl
@@ -1,7 +1,5 @@
 [tools]
-{{ $groups := list "shared" -}}
-{{ if .personal }}{{ $groups = append $groups "personal" }}{{ end -}}
-{{ if .work }}{{ $groups = append $groups "work" }}{{ end -}}
+{{ $groups := includeTemplate "lib/chezmoi/active-groups.json.tmpl" . | fromJson -}}
 {{ range $groups -}}
 {{ $tools := index $.mise.tools . -}}
 {{ range $tools -}}
diff --git a/tests/template/chezmoi-helpers.bats b/tests/template/chezmoi-helpers.bats
new file mode 100644
index 0000000..96759b9
--- /dev/null
+++ b/tests/template/chezmoi-helpers.bats
@@ -0,0 +1,92 @@
+#!/usr/bin/env bats
+# @file tests/template/chezmoi-helpers.bats
+# @brief Template rendering tests for chezmoi helper templates.
+
+load '../test_helpers/load.bash'
+
+SOURCE_DIR="$DOTFILES_ROOT/home"
+ACTIVE_GROUPS_TMPL="$DOTFILES_ROOT/home/.chezmoitemplates/lib/chezmoi/active-groups.json.tmpl"
+ACTIVE_GROUP_VALUES_TMPL="$DOTFILES_ROOT/home/.chezmoitemplates/lib/chezmoi/active-group-values.json.tmpl"
+
+DARWIN_DATA='{"chezmoi":{"os":"darwin"},"personal":true,"work":false}'
+WORK_DATA='{"chezmoi":{"os":"darwin"},"personal":false,"work":true}'
+SHARED_DATA='{"chezmoi":{"os":"darwin"},"personal":false,"work":false}'
+BOTH_DATA='{"chezmoi":{"os":"darwin"},"personal":true,"work":true}'
+
+APM_VALUES_BY_GROUP='{"shared":["graphify"],"personal":["claude","agent-skills"],"work":["copilot"]}'
+APM_VALUES_SPARSE='{"shared":["graphify"]}'
+
+render_helper() {
+  local template="$1"
+  local data="$2"
+
+  mise exec -- chezmoi execute-template --source "$SOURCE_DIR" --override-data "$data" <"$template"
+}
+
+@test "active-groups returns shared and personal for personal context" {
+  run render_helper "$ACTIVE_GROUPS_TMPL" "$DARWIN_DATA"
+
+  assert_success
+  assert_output '["shared","personal"]'
+}
+
+@test "active-groups returns shared and work for work context" {
+  run render_helper "$ACTIVE_GROUPS_TMPL" "$WORK_DATA"
+
+  assert_success
+  assert_output '["shared","work"]'
+}
+
+@test "active-groups returns only shared when neither personal nor work" {
+  run render_helper "$ACTIVE_GROUPS_TMPL" "$SHARED_DATA"
+
+  assert_success
+  assert_output '["shared"]'
+}
+
+@test "active-group-values merges shared and personal apm targets for personal context" {
+  local data
+  data=$(printf '{"ctx":{"personal":true,"work":false},"valuesByGroup":%s}' "$APM_VALUES_BY_GROUP")
+
+  run render_helper "$ACTIVE_GROUP_VALUES_TMPL" "$data"
+
+  assert_success
+  assert_output '["graphify","claude","agent-skills"]'
+}
+
+@test "active-group-values merges shared and work apm targets for work context" {
+  local data
+  data=$(printf '{"ctx":{"personal":false,"work":true},"valuesByGroup":%s}' "$APM_VALUES_BY_GROUP")
+
+  run render_helper "$ACTIVE_GROUP_VALUES_TMPL" "$data"
+
+  assert_success
+  assert_output '["graphify","copilot"]'
+}
+
+@test "active-group-values returns only shared apm targets when neither personal nor work" {
+  local data
+  data=$(printf '{"ctx":{"personal":false,"work":false},"valuesByGroup":%s}' "$APM_VALUES_BY_GROUP")
+
+  run render_helper "$ACTIVE_GROUP_VALUES_TMPL" "$data"
+
+  assert_success
+  assert_output '["graphify"]'
+}
+
+@test "active-groups returns shared, personal, and work when both are true" {
+  run render_helper "$ACTIVE_GROUPS_TMPL" "$BOTH_DATA"
+
+  assert_success
+  assert_output '["shared","personal","work"]'
+}
+
+@test "active-group-values silently skips groups absent from valuesByGroup" {
+  local data
+  data=$(printf '{"ctx":{"personal":true,"work":false},"valuesByGroup":%s}' "$APM_VALUES_SPARSE")
+
+  run render_helper "$ACTIVE_GROUP_VALUES_TMPL" "$data"
+
+  assert_success
+  assert_output '["graphify"]'
+}