diff --git a/README.md b/README.md
index e5acca62..5a1bf154 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,7 @@ moshcode install kimi       # curl -fsSL https://code.kimi.com/kimi-code/install
 moshcode install qwen       # npm i -g @qwen-code/qwen-code
 moshcode install deepseek   # npm i -g @serjm/deepseek-code
 moshcode install mimocode   # curl -fsSL https://mimo.xiaomi.com/install | bash   (binary: mimo)
+moshcode install omp        # curl -fsSL https://omp.sh/install | sh
 moshcode install openagents # curl -fsSL https://openagents.org/install.sh | bash
 ```
 
@@ -118,6 +119,7 @@ moshcode agents kimi        # kimi --yolo
 moshcode agents qwen        # qwen --approval-mode=yolo                         (autonomous)
 moshcode agents deepseek    # deepseek-code --turbo                             (autonomous)
 moshcode agents mimocode    # mimo --dangerously-skip-permissions --trust       (autonomous)
+moshcode agents omp         # omp --auto-approve                                (autonomous)
 moshcode agents aider       # aider --yes-always                                (autonomous)
 moshcode agents openagents  # openagents                                        (dashboard)
 ```
@@ -461,8 +463,8 @@ of the traffic and a tenth of the price; folding them into `in` makes a $3
 session look like a $60 one. Attribution is engine + directory + "started before
 this run did", so a session that shares a directory with another agent can pick
 up its neighbour's work — `--json` carries the run list when you need to check.
-gemini, kimi, qwen, deepseek, mimocode and openagents keep no readable usage
-log, so they report no cost rather than zero cost.
+gemini, kimi, qwen, deepseek, mimocode, omp and openagents keep no readable
+usage log, so they report no cost rather than zero cost.
 
 ### Driving it from a script or another agent
 
diff --git a/src/cli-schema.mjs b/src/cli-schema.mjs
index b0e3b7bd..7001b73c 100644
--- a/src/cli-schema.mjs
+++ b/src/cli-schema.mjs
@@ -215,7 +215,7 @@ export const CORE_CLI_COMMANDS = [
       + "codex's rollout token counts, opencode's per-message cost, aider's chat history. a figure marked "
       + "`~` was worked out from published rates and is what the tokens WOULD cost on the api; unmarked "
       + "figures are the engine's own arithmetic. models with no rate show tokens and no cost — add yours "
-      + "to ~/.moshcode/pricing.json. gemini, kimi, deepseek, mimocode and openagents log nothing readable, "
+      + "to ~/.moshcode/pricing.json. gemini, kimi, deepseek, mimocode, omp and openagents log nothing readable, "
       + "so they report no cost rather than zero. under the table, `burn` is the same windows for every "
       + "engine — last 1 min, 15 min, 1 hour, 4 hours, 8 hours and the report window — with what the "
       + "requests inside each cost, that cost per hour, and the runs behind it; --json carries them as `burn`.",
diff --git a/src/cost.mjs b/src/cost.mjs
index d443c103..e20f8365 100644
--- a/src/cost.mjs
+++ b/src/cost.mjs
@@ -740,7 +740,7 @@ export const COST_READERS = {
 };
 
 /** Engines moshcode can launch but cannot cost — named so the report can say so. */
-export const UNCOSTED_ENGINES = ["gemini", "kimi", "deepseek", "mimocode", "openagents"];
+export const UNCOSTED_ENGINES = ["gemini", "kimi", "deepseek", "mimocode", "omp", "openagents"];
 
 /**
  * Finish a run: price it, and record where the price came from.
diff --git a/src/engines.mjs b/src/engines.mjs
index 9a483c4f..088518e7 100644
--- a/src/engines.mjs
+++ b/src/engines.mjs
@@ -314,6 +314,29 @@ export const ENGINES = {
       ],
     },
   },
+  omp: {
+    desc: "omp — Stencil Labs' coding agent with LSP, DAP and subagents (omp.sh)",
+    bin: "omp",
+    // `--auto-approve` skips every tool approval prompt; the agent can still
+    // ask a question, the same shape as kimi's --yolo. `--approval-mode=yolo`
+    // reaches the same place through a settings override, so this stays on the
+    // flag that says what it does.
+    agentArgs: ["--auto-approve"],
+    // No agentsView: `omp agents` manages the bundled task-agent definitions
+    // (`omp agents unpack`) — it prints and exits, not a live view to land on.
+    install: { cmd: "sh", args: ["-c", "curl -fsSL https://omp.sh/install | sh"] },
+    // Its own updater, which handles both install shapes below and the
+    // stable/canary channel.
+    upgrade: { cmd: "omp", args: ["update"] },
+    // The installer runs `bun install -g` when a native-arch bun is present,
+    // landing in ~/.bun/bin, and otherwise downloads a prebuilt binary to
+    // ~/.local/bin (PI_INSTALL_DIR). It edits no shell rc and neither directory
+    // is guaranteed to be on PATH, so search both.
+    binDirs: [path.join(homedir(), ".bun", "bin"), path.join(homedir(), ".local", "bin")],
+    resume: ["--continue"],
+    // No `state`: the TUI's approval and question wording is not verified
+    // here, and a guessed pattern is worse than the shared ones.
+  },
   openagents: {
     desc: "OpenAgents — multi-agent launcher + dashboard (openagents.org)",
     // The package installs three identical bins — `agn`, `openagents`, and
@@ -416,6 +439,8 @@ export const ENGINE_ALIASES = {
   // Same idea for openagents: `agn` and `agent-connector` are the other two
   // binary names its package installs, and the domain is how it's advertised.
   oa: "openagents", agn: "openagents", "agent-connector": "openagents", "openagents.org": "openagents",
+  // omp is oh-my-pi upstream (can1357/oh-my-pi); the domain is how it's advertised.
+  "oh-my-pi": "omp", ohmypi: "omp", "omp.sh": "omp",
 };
 
 /** Resolve a name/alias to `[key, engine]`, or null. */
@@ -533,6 +558,7 @@ const AI_EXEC = {
   qwen: (p) => ["-p", p],                                    // qwen prompt mode (gemini-derived)
   deepseek: (p) => ["--headless", "-p", p],                  // deepseek: -p runs one prompt and exits; --headless drops the TUI so stdout is pipe-clean
   mimocode: (p) => ["run", p],                               // mimocode one-shot (opencode-derived: `mimo run <message>`)
+  omp: (p) => ["-p", p],                                     // omp print mode: process the prompt and exit
   // openagents is absent on purpose: it answers no prompts itself, it starts
   // the engines that do. ai() throws a named error rather than picking it.
 };
@@ -556,7 +582,7 @@ export function aiExecArgs(engine, prompt) {
  */
 export function pickAiEngine(preferred) {
   const wanted = preferred ? resolveEngine(preferred)?.[0] : null;
-  const order = preferred ? (wanted ? [wanted] : []) : ["claude", "codex", "opencode", "privacycode", "gemini", "kimi", "qwen", "deepseek", "mimocode", "aider"];
+  const order = preferred ? (wanted ? [wanted] : []) : ["claude", "codex", "opencode", "privacycode", "gemini", "kimi", "qwen", "deepseek", "mimocode", "omp", "aider"];
   for (const key of order) {
     if (Object.hasOwn(ENGINES, key) && Object.hasOwn(AI_EXEC, key) && isInstalled(ENGINES[key].bin, ENGINES[key].binDirs)) return key;
   }
diff --git a/test/engines.test.mjs b/test/engines.test.mjs
index 231c5ab6..b177e000 100644
--- a/test/engines.test.mjs
+++ b/test/engines.test.mjs
@@ -35,6 +35,7 @@ const EXPECTED_AGENT_ARGS = {
   qwen: ["--approval-mode=yolo"],
   deepseek: ["--turbo"],
   mimocode: ["--dangerously-skip-permissions", "--trust"],
+  omp: ["--auto-approve"],
   openagents: [], // a launcher, not an agent: nothing of its own to auto-approve
   aider: ["--yes-always"],
 };
@@ -53,6 +54,7 @@ const EXPECTED_LAUNCH_ARGS = {
   qwen: ["--approval-mode=yolo"],
   deepseek: ["--turbo"],
   mimocode: ["--dangerously-skip-permissions", "--trust"], // no agents view — `mimo agent` prints and exits
+  omp: ["--auto-approve"], // no agents view — `omp agents` manages bundled agent files and exits
   openagents: [], // bare launch opens the dashboard, which is its agent list
   aider: ["--yes-always"],
 };