diff --git a/modules/diceserv/src/lib.rs b/modules/diceserv/src/lib.rs
index eb10664..6e0b1ab 100644
--- a/modules/diceserv/src/lib.rs
+++ b/modules/diceserv/src/lib.rs
@@ -6,7 +6,7 @@
 //! `lib.rs` holds the dispatcher; the command lives in roll.rs and the
 //! expression evaluator in expr.rs.
 
-use echo_api::{HelpEntry, NetView, Sender, Service, ServiceCtx, Store};
+use echo_api::{t, HelpEntry, NetView, Sender, Service, ServiceCtx, Store};
 
 #[path = "expr.rs"]
 mod expr;
@@ -49,7 +49,7 @@ impl Service for DiceServ {
             Some("CALC") => roll::handle(me, from, &args[1..], ctx, false, false),
             Some("EXCALC") => roll::handle(me, from, &args[1..], ctx, true, false),
             Some("HELP") | None => echo_api::help(me, from, ctx, BLURB, TOPICS, args.get(1).copied()),
-            Some(other) => ctx.notice(me, from.uid, format!("I don't know \x02{other}\x02. Try \x02ROLL\x02, \x02CALC\x02, or \x02HELP\x02.")),
+            Some(other) => ctx.notice(me, from.uid, t!(ctx, "I don't know \x02{other}\x02. Try \x02ROLL\x02, \x02CALC\x02, or \x02HELP\x02.", other = other)),
         }
     }
 }
diff --git a/modules/diceserv/src/roll.rs b/modules/diceserv/src/roll.rs
index 86c6180..e0a3e69 100644
--- a/modules/diceserv/src/roll.rs
+++ b/modules/diceserv/src/roll.rs
@@ -1,4 +1,4 @@
-use echo_api::{Sender, ServiceCtx};
+use echo_api::{t, Sender, ServiceCtx};
 
 use super::expr;
 
@@ -19,7 +19,7 @@ pub fn handle(me: &str, from: &Sender, rest: &[&str], ctx: &mut ServiceCtx, exte
         Some((n, body)) => match n.trim().parse::<u32>() {
             Ok(t) if (1..=MAX_REPEATS).contains(&t) => (t, body.trim()),
             _ => {
-                ctx.notice(me, from.uid, format!("The repeat count before \x02~\x02 must be a number from 1 to {MAX_REPEATS}."));
+                ctx.notice(me, from.uid, t!(ctx, "The repeat count before \x02~\x02 must be a number from 1 to {max}.", max = MAX_REPEATS));
                 return;
             }
         },
@@ -50,7 +50,7 @@ pub fn handle(me: &str, from: &Sender, rest: &[&str], ctx: &mut ServiceCtx, exte
                 }
             }
             Err(why) => {
-                ctx.notice(me, from.uid, format!("I couldn't roll \x02{body}\x02: {why}."));
+                ctx.notice(me, from.uid, t!(ctx, "I couldn't roll \x02{body}\x02: {why}.", body = body, why = why));
                 return; // the whole batch shares the expression, so it'll fail the same way
             }
         }
diff --git a/modules/dictserv/src/lib.rs b/modules/dictserv/src/lib.rs
index 80f2d06..425f0e1 100644
--- a/modules/dictserv/src/lib.rs
+++ b/modules/dictserv/src/lib.rs
@@ -6,7 +6,7 @@
 //! Works two ways: `/msg DictServ dict cat` (DictServ replies), or the fantasy
 //! `!dict cat` in a channel with an assigned bot (the bot speaks the answer).
 
-use echo_api::{HelpEntry, NetView, Sender, Service, ServiceCtx, Store};
+use echo_api::{t, HelpEntry, NetView, Sender, Service, ServiceCtx, Store};
 
 // One lookup command: the fantasy/word, the DICT database it queries, and a human
 // label shown in the reply. Shared by DictServ and the engine's fantasy router so
@@ -75,7 +75,7 @@ impl Service for DictServ {
         if let Some(l) = lookup_for(cmd) {
             let query = args[1..].join(" ");
             if query.trim().is_empty() {
-                ctx.notice(me, from.uid, format!("Give a term to look up, e.g. \x02{} cat\x02.", l.cmd));
+                ctx.notice(me, from.uid, t!(ctx, "Give a term to look up, e.g. \x02{cmd} cat\x02.", cmd = l.cmd));
                 return;
             }
             ctx.dict_lookup(me, from.uid, l.database, l.label, query);
@@ -85,11 +85,11 @@ impl Service for DictServ {
             "LOOKUP" | "LIST" => {
                 ctx.notice(me, from.uid, "Lookup commands (use in a channel as \x02!cmd <term>\x02, or here as \x02/msg DictServ cmd <term>\x02):");
                 for l in LOOKUPS {
-                    ctx.notice(me, from.uid, format!("  \x02{}\x02 — {}", l.cmd, l.label));
+                    ctx.notice(me, from.uid, t!(ctx, "  \x02{cmd}\x02 — {label}", cmd = l.cmd, label = l.label));
                 }
             }
             "HELP" | "" => echo_api::help(me, from, ctx, BLURB, TOPICS, args.get(1).copied()),
-            other => ctx.notice(me, from.uid, format!("I don't know \x02{other}\x02. Try \x02LOOKUP\x02 for the list, or \x02HELP\x02.")),
+            other => ctx.notice(me, from.uid, t!(ctx, "I don't know \x02{other}\x02. Try \x02LOOKUP\x02 for the list, or \x02HELP\x02.", other = other)),
         }
     }
 }