diff --git a/crates/ctl/src/commands/chat.rs b/crates/ctl/src/commands/chat.rs
new file mode 100644
index 0000000000..d87f26330f
--- /dev/null
+++ b/crates/ctl/src/commands/chat.rs
@@ -0,0 +1,47 @@
+//! Chat subcommands.
+
+use {
+    crate::client::CtlClient,
+    serde_json::{Value, json},
+};
+
+pub async fn send(client: &mut CtlClient, text: &str, session_key: &str) -> anyhow::Result<Value> {
+    client
+        .call(
+            "chat.send",
+            json!({
+                "text": text,
+                "_session_key": session_key,
+            }),
+        )
+        .await
+        .map_err(Into::into)
+}
+
+pub async fn history(client: &mut CtlClient, session_key: &str) -> anyhow::Result<Value> {
+    client
+        .call(
+            "chat.history",
+            json!({
+                "_session_key": session_key,
+            }),
+        )
+        .await
+        .map_err(Into::into)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn send_params_preserve_terminal_bench_session() {
+        let params = json!({
+            "text": "fix the task",
+            "_session_key": "terminal-bench:task-1",
+        });
+
+        assert_eq!(params["text"], "fix the task");
+        assert_eq!(params["_session_key"], "terminal-bench:task-1");
+    }
+}
diff --git a/crates/ctl/src/commands/mod.rs b/crates/ctl/src/commands/mod.rs
index d0e6b84ab8..2522179fb4 100644
--- a/crates/ctl/src/commands/mod.rs
+++ b/crates/ctl/src/commands/mod.rs
@@ -1,5 +1,6 @@
 //! CLI subcommand modules.
 
+pub mod chat;
 pub mod config;
 pub mod health;
 pub mod mcp;
diff --git a/crates/ctl/src/main.rs b/crates/ctl/src/main.rs
index ae54b47758..22ce6a2f06 100644
--- a/crates/ctl/src/main.rs
+++ b/crates/ctl/src/main.rs
@@ -49,6 +49,23 @@ struct Cli {
 
 #[derive(Subcommand)]
 enum Command {
+    /// Send a message through the Moltis agent loop and wait for completion.
+    Chat {
+        /// Message to send to the agent.
+        text: String,
+
+        /// Session key used to isolate this conversation.
+        #[arg(long, default_value = "terminal-bench")]
+        session_key: String,
+    },
+
+    /// Fetch persisted messages for a chat session.
+    ChatHistory {
+        /// Session key whose history should be returned.
+        #[arg(long, default_value = "terminal-bench")]
+        session_key: String,
+    },
+
     /// Check gateway health.
     Health,
     /// Show gateway status.
@@ -90,6 +107,12 @@ async fn main() {
     };
 
     let result = match cli.command {
+        Command::Chat { text, session_key } => {
+            commands::chat::send(&mut client, &text, &session_key).await
+        },
+        Command::ChatHistory { session_key } => {
+            commands::chat::history(&mut client, &session_key).await
+        },
         Command::Health => commands::health::health(&mut client).await,
         Command::Status => commands::health::status(&mut client).await,
         Command::Mcp(cmd) => commands::mcp::run(&mut client, cmd).await,
diff --git a/tools/terminal_bench/README.md b/tools/terminal_bench/README.md
new file mode 100644
index 0000000000..72012ee6b5
--- /dev/null
+++ b/tools/terminal_bench/README.md
@@ -0,0 +1,51 @@
+# Running Moltis in Terminal-Bench / Harbor
+
+`moltis-ctl chat` drives a task through the same authenticated WebSocket RPC and
+agent loop as the web UI. The wrapper in this directory gives Harbor a simple
+installed-agent entry point.
+
+## Build
+
+```sh
+cargo build --release -p moltis-ctl
+```
+
+Make `target/release/moltis-ctl` available in the task container (or set
+`MOLTIS_CTL_BIN` to its mounted path), then configure the installed-agent
+command as:
+
+```sh
+tools/terminal_bench/run_moltis_agent.sh
+```
+
+The wrapper accepts the task instruction as arguments, from stdin, or via
+`HARBOR_TASK_INSTRUCTION`.
+
+## Required environment
+
+- `MOLTIS_API_KEY`: gateway API key (required; do not commit it)
+- `MOLTIS_GATEWAY_URL`: gateway URL, default
+  `http://host.docker.internal:13131`
+- `MOLTIS_CTL_BIN`: `moltis-ctl` path, default `moltis-ctl`
+- `MOLTIS_SESSION_KEY`: optional stable per-task session key; defaults to
+  `terminal-bench:${HARBOR_TASK_ID:-task}`
+
+Each task must use a distinct session key so model/tool history cannot leak
+between benchmark tasks.
+
+## Smoke test
+
+A representative end-to-end task can be run without Harbor orchestration:
+
+```sh
+MOLTIS_API_KEY='...' \
+MOLTIS_GATEWAY_URL='http://127.0.0.1:13131' \
+tools/terminal_bench/run_moltis_agent.sh \
+  'Create /tmp/terminal-bench-smoke.txt containing exactly moltis-ok'
+
+test "$(cat /tmp/terminal-bench-smoke.txt)" = moltis-ok
+```
+
+The `chat` command does not return until the Moltis agent loop finishes. Its
+JSON output includes the assistant text and token/round usage. Use
+`moltis-ctl chat-history --session-key <key>` when debugging a failed run.
diff --git a/tools/terminal_bench/run_moltis_agent.sh b/tools/terminal_bench/run_moltis_agent.sh
new file mode 100755
index 0000000000..fe0c7cea45
--- /dev/null
+++ b/tools/terminal_bench/run_moltis_agent.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+: "${MOLTIS_API_KEY:?MOLTIS_API_KEY must be set}"
+
+MOLTIS_CTL_BIN="${MOLTIS_CTL_BIN:-moltis-ctl}"
+MOLTIS_GATEWAY_URL="${MOLTIS_GATEWAY_URL:-http://host.docker.internal:13131}"
+MOLTIS_SESSION_KEY="${MOLTIS_SESSION_KEY:-terminal-bench:${HARBOR_TASK_ID:-task}}"
+
+if (($#)); then
+  instruction="$*"
+elif [[ -n "${HARBOR_TASK_INSTRUCTION:-}" ]]; then
+  instruction="$HARBOR_TASK_INSTRUCTION"
+else
+  instruction="$(cat)"
+fi
+
+if [[ -z "${instruction//[[:space:]]/}" ]]; then
+  echo "terminal-bench: missing task instruction" >&2
+  exit 2
+fi
+
+exec "$MOLTIS_CTL_BIN" \
+  --gateway-url "$MOLTIS_GATEWAY_URL" \
+  --api-key "$MOLTIS_API_KEY" \
+  chat \
+  --session-key "$MOLTIS_SESSION_KEY" \
+  "$instruction"
diff --git a/tools/terminal_bench/test_run_moltis_agent.sh b/tools/terminal_bench/test_run_moltis_agent.sh
new file mode 100755
index 0000000000..c468693f4e
--- /dev/null
+++ b/tools/terminal_bench/test_run_moltis_agent.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+tmp="$(mktemp -d)"
+trap 'rm -rf "$tmp"' EXIT
+
+cat >"$tmp/moltis-ctl" <<'MOCK'
+#!/usr/bin/env bash
+printf '%s\n' "$@" >"${CAPTURE_FILE:?}"
+MOCK
+chmod +x "$tmp/moltis-ctl"
+
+export CAPTURE_FILE="$tmp/args"
+export MOLTIS_API_KEY="test-key"
+export MOLTIS_CTL_BIN="$tmp/moltis-ctl"
+export MOLTIS_GATEWAY_URL="http://gateway:13131"
+export HARBOR_TASK_ID="representative-task"
+
+"$script_dir/run_moltis_agent.sh" "write" "the file"
+
+mapfile -t args <"$CAPTURE_FILE"
+expected=(
+  --gateway-url http://gateway:13131
+  --api-key test-key
+  chat
+  --session-key terminal-bench:representative-task
+  "write the file"
+)
+[[ "${args[*]}" == "${expected[*]}" ]]
+
+unset HARBOR_TASK_ID
+export MOLTIS_SESSION_KEY="terminal-bench:stdin-task"
+printf 'instruction from stdin\n' | "$script_dir/run_moltis_agent.sh"
+mapfile -t args <"$CAPTURE_FILE"
+[[ "${args[6]}" == "terminal-bench:stdin-task" ]]
+[[ "${args[7]}" == "instruction from stdin" ]]
+
+if MOLTIS_API_KEY='' "$script_dir/run_moltis_agent.sh" test 2>/dev/null; then
+  echo "expected missing API key to fail" >&2
+  exit 1
+fi
+
+echo "terminal-bench wrapper tests passed"