diff --git a/cmd/action.go b/cmd/action.go
index 14db3a7..27b31a0 100644
--- a/cmd/action.go
+++ b/cmd/action.go
@@ -7,8 +7,19 @@ import (
 var actionCmd = &cobra.Command{
 	Use:   "action",
 	Short: "Manage and run source actions",
-	Long: `
-`,
+	Long: `Add, edit, delete, and run source actions on items.
+
+A feed source is updated by the "fetch" action, which receives no input and
+returns one JSON item per line on stdout. Other source actions are run on a
+specific item, receiving that item on stdin and expecting that item, with any
+modifications made by the action, on stdout.
+
+Items declare support for an action by having an "action" key containing an
+object with a key for every supported action. The value of that key may be
+any arbitrary JSON value. Use --force to execute an unsupported action anyway,
+though the action may fail if it operated on the item's action data.
+
+To execute the "fetch" action, use "intake source fetch".`,
 }
 
 func init() {
diff --git a/cmd/actionAdd.go b/cmd/actionAdd.go
index ec27c96..1c8fa20 100644
--- a/cmd/actionAdd.go
+++ b/cmd/actionAdd.go
@@ -3,19 +3,50 @@ package cmd
 import (
 	"log"
 
+	"github.com/Jaculabilis/intake/core"
 	"github.com/spf13/cobra"
 )
 
 var actionAddCmd = &cobra.Command{
-	Use:   "add",
+	Use:   "add [flags] -- argv...",
 	Short: "Add an action to a source",
-	Long: `
+	Long: `Add an action to a source.
 `,
 	Run: func(cmd *cobra.Command, args []string) {
-		log.Fatal("not implemented")
+		actionAdd(getArgv(cmd, args))
 	},
 }
 
+var actionAddSource string
+var actionAddAction string
+
 func init() {
 	actionCmd.AddCommand(actionAddCmd)
+
+	actionAddCmd.Flags().StringVarP(&actionAddSource, "source", "s", "", "Source to add action")
+	actionAddCmd.MarkFlagRequired("source")
+
+	actionAddCmd.Flags().StringVarP(&actionAddAction, "action", "a", "", "Action name")
+	actionAddCmd.MarkFlagRequired("action")
+}
+
+func actionAdd(argv []string) {
+	if actionAddSource == "" {
+		log.Fatal("error: --source is empty")
+	}
+	if actionAddAction == "" {
+		log.Fatal("error: --action is empty")
+	}
+	if len(argv) == 0 {
+		log.Fatal("error: no argv provided")
+	}
+
+	db := openAndMigrateDb()
+
+	err := core.AddAction(db, actionAddSource, actionAddAction, argv)
+	if err != nil {
+		log.Fatalf("error: %v", err)
+	}
+
+	log.Printf("Added action %s to source %s", actionAddAction, actionAddSource)
 }
diff --git a/cmd/actionDelete.go b/cmd/actionDelete.go
index d033a3b..ccc7dbb 100644
--- a/cmd/actionDelete.go
+++ b/cmd/actionDelete.go
@@ -3,19 +3,48 @@ package cmd
 import (
 	"log"
 
+	"github.com/Jaculabilis/intake/core"
 	"github.com/spf13/cobra"
 )
 
 var actionDeleteCmd = &cobra.Command{
-	Use:   "delete",
-	Short: "Delete an action from a source",
-	Long: `
+	Use:     "delete",
+	Aliases: []string{"rm"},
+	Short:   "Delete an action from a source",
+	Long: `Delete an action from a source.
 `,
 	Run: func(cmd *cobra.Command, args []string) {
-		log.Fatal("not implemented")
+		actionDelete()
 	},
 }
 
+var actionDeleteSource string
+var actionDeleteAction string
+
 func init() {
 	actionCmd.AddCommand(actionDeleteCmd)
+
+	actionDeleteCmd.Flags().StringVarP(&actionDeleteSource, "source", "s", "", "Source to add action")
+	actionDeleteCmd.MarkFlagRequired("source")
+
+	actionDeleteCmd.Flags().StringVarP(&actionDeleteAction, "action", "a", "", "Action name")
+	actionDeleteCmd.MarkFlagRequired("action")
+}
+
+func actionDelete() {
+	if actionDeleteSource == "" {
+		log.Fatal("error: --source is empty")
+	}
+	if actionDeleteAction == "" {
+		log.Fatal("error: --action is empty")
+	}
+
+	db := openAndMigrateDb()
+
+	err := core.DeleteAction(db, actionDeleteSource, actionDeleteAction)
+	if err != nil {
+		log.Fatalf("error: %v", err)
+	}
+
+	log.Printf("Deleted action %s from source %s", actionDeleteAction, actionDeleteSource)
 }
diff --git a/cmd/actionEdit.go b/cmd/actionEdit.go
index 03ed1f5..9d5a2aa 100644
--- a/cmd/actionEdit.go
+++ b/cmd/actionEdit.go
@@ -3,19 +3,50 @@ package cmd
 import (
 	"log"
 
+	"github.com/Jaculabilis/intake/core"
 	"github.com/spf13/cobra"
 )
 
 var actionEditCmd = &cobra.Command{
 	Use:   "edit",
-	Short: "Edit an action",
-	Long: `
+	Short: "Edit an action on a source",
+	Long: `Edit an action on a source.
 `,
 	Run: func(cmd *cobra.Command, args []string) {
-		log.Fatal("not implemented")
+		actionEdit(getArgv(cmd, args))
 	},
 }
 
+var actionEditSource string
+var actionEditAction string
+
 func init() {
 	actionCmd.AddCommand(actionEditCmd)
+
+	actionEditCmd.Flags().StringVarP(&actionEditSource, "source", "s", "", "Source to edit action")
+	actionEditCmd.MarkFlagRequired("source")
+
+	actionEditCmd.Flags().StringVarP(&actionEditAction, "action", "a", "", "Action name")
+	actionEditCmd.MarkFlagRequired("action")
+}
+
+func actionEdit(argv []string) {
+	if actionEditSource == "" {
+		log.Fatal("error: --source is empty")
+	}
+	if actionEditAction == "" {
+		log.Fatal("error: --action is empty")
+	}
+	if len(argv) == 0 {
+		log.Fatal("error: no argv provided")
+	}
+
+	db := openAndMigrateDb()
+
+	err := core.UpdateAction(db, actionEditSource, actionEditAction, argv)
+	if err != nil {
+		log.Fatalf("error: %v", err)
+	}
+
+	log.Printf("Updated action %s on source %s", actionEditAction, actionEditSource)
 }
diff --git a/cmd/actionList.go b/cmd/actionList.go
new file mode 100644
index 0000000..7307538
--- /dev/null
+++ b/cmd/actionList.go
@@ -0,0 +1,66 @@
+package cmd
+
+import (
+	"fmt"
+	"log"
+	"slices"
+
+	"github.com/Jaculabilis/intake/core"
+	"github.com/spf13/cobra"
+)
+
+var actionListCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List actions on a source",
+	Long: `List actions on a source.
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		actionList()
+	},
+}
+
+var actionListSource string
+var actionListArgv bool
+
+func init() {
+	actionCmd.AddCommand(actionListCmd)
+
+	actionListCmd.Flags().StringVarP(&actionListSource, "source", "s", "", "Source to list actions")
+	actionListCmd.MarkFlagRequired("source")
+
+	actionListCmd.Flags().BoolVarP(&actionListArgv, "argv", "a", false, "Include action command")
+}
+
+func actionList() {
+	if actionListSource == "" {
+		log.Fatal("error: --source is empty")
+	}
+
+	db := openAndMigrateDb()
+
+	actions, err := core.GetActionsForSource(db, actionListSource)
+	if err != nil {
+		log.Fatal(err)
+	}
+	slices.SortFunc(actions, actionSort)
+
+	if actionListArgv {
+		actionArgv := make(map[string][]string)
+		for _, name := range actions {
+			argv, err := core.GetArgvForAction(db, actionListSource, name)
+			if err != nil {
+				log.Fatalf("error: could not get argv for source %s action %s: %v", actionListSource, name, err)
+			}
+			actionArgv[name] = argv
+		}
+		for _, name := range actions {
+			fmt.Printf("%s %v\n", name, actionArgv[name])
+		}
+
+	} else {
+		for _, action := range actions {
+			fmt.Println(action)
+		}
+	}
+}
diff --git a/cmd/root.go b/cmd/root.go
index 4c981f9..b0c06f0 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"strings"
 
 	"github.com/Jaculabilis/intake/core"
 	"github.com/spf13/cobra"
@@ -65,3 +66,23 @@ func openAndMigrateDb() *core.DB {
 	}
 	return db
 }
+
+func getArgv(cmd *cobra.Command, args []string) []string {
+	lenAtDash := cmd.Flags().ArgsLenAtDash()
+	if lenAtDash == -1 {
+		return nil
+	} else {
+		return args[lenAtDash:]
+	}
+}
+
+// Sort "fetch" action ahead of other actions
+func actionSort(a string, b string) int {
+	if a == "fetch" {
+		return -1
+	}
+	if b == "fetch" {
+		return 1
+	}
+	return strings.Compare(a, b)
+}
diff --git a/cmd/sourceList.go b/cmd/sourceList.go
index d6a4e89..cd4e14a 100644
--- a/cmd/sourceList.go
+++ b/cmd/sourceList.go
@@ -20,8 +20,12 @@ var sourceListCmd = &cobra.Command{
 	},
 }
 
+var sourceListShowActions bool
+
 func init() {
 	sourceCmd.AddCommand(sourceListCmd)
+
+	sourceListCmd.Flags().BoolVarP(&sourceListShowActions, "actions", "a", false, "Include source actions")
 }
 
 func sourceList() {
@@ -31,10 +35,24 @@ func sourceList() {
 	if err != nil {
 		log.Fatalf("error: %v", err)
 	}
-
 	slices.Sort(names)
 
-	for _, name := range names {
-		fmt.Println(name)
+	if sourceListShowActions {
+		sourceActions := make(map[string][]string)
+		for _, name := range names {
+			actions, err := core.GetActionsForSource(db, name)
+			if err != nil {
+				log.Fatalf("error: could not get actions for source %s: %v", name, err)
+			}
+			slices.SortFunc(actions, actionSort)
+			sourceActions[name] = actions
+		}
+		for _, name := range names {
+			fmt.Printf("%s %v\n", name, sourceActions[name])
+		}
+	} else {
+		for _, name := range names {
+			fmt.Println(name)
+		}
 	}
 }
diff --git a/core/action.go b/core/action.go
index ec2de34..f204724 100644
--- a/core/action.go
+++ b/core/action.go
@@ -81,7 +81,7 @@ func DeleteAction(db *DB, source string, name string) error {
 	_, err := db.Exec(`
 		delete from actions
 		where source = ? and name = ?
-	`)
+	`, source, name)
 	return err
 }
 
diff --git a/core/action_test.go b/core/action_test.go
index 021e0b6..fb8672c 100644
--- a/core/action_test.go
+++ b/core/action_test.go
@@ -48,6 +48,11 @@ func TestActionCreate(t *testing.T) {
 	if len(argv) != 2 || argv[0] != "echo" || argv[1] != "goodbye" {
 		t.Fatalf("expected [echo goodbye], got: %v", argv)
 	}
+
+	err = DeleteAction(db, "test", "hello")
+	if err != nil {
+		t.Fatal(err)
+	}
 }
 
 func TestExecute(t *testing.T) {