diff --git a/.changeset/old-rice-fetch.md b/.changeset/old-rice-fetch.md
new file mode 100644
index 0000000..d0bc59a
--- /dev/null
+++ b/.changeset/old-rice-fetch.md
@@ -0,0 +1,6 @@
+---
+"@shellular/protocol": minor
+"shellular": minor
+---
+
+feat: add Oh My Pi ACP agent support
diff --git a/cli/src/agents/agents.ts b/cli/src/agents/agents.ts
index c3533ed..60828a9 100644
--- a/cli/src/agents/agents.ts
+++ b/cli/src/agents/agents.ts
@@ -129,6 +129,34 @@ export const BUILTIN_AGENT_DESCRIPTORS: Record<AgentId, AgentDescriptor> = {
 			args: ["-y", "pi-acp"],
 		},
 	},
+	omp: {
+		id: "omp",
+		name: "Oh My Pi",
+		title: "Oh My Pi",
+		agentExecutable: "omp",
+		installationCommands: {
+			Shell: {
+				os: ["macos", "linux"],
+				command: "curl -fsSL https://omp.sh/install | sh",
+			},
+			Homebrew: {
+				os: ["macos", "linux"],
+				command: "brew install can1357/tap/omp",
+			},
+			bun: {
+				os: ["all"],
+				command: "bun install -g @oh-my-pi/pi-coding-agent",
+			},
+			PowerShell: {
+				os: ["windows"],
+				command: "irm https://omp.sh/install.ps1 | iex",
+			},
+		},
+		spawn: {
+			command: "omp",
+			args: ["acp"],
+		},
+	},
 	cursor: {
 		id: "cursor",
 		name: "Cursor",
diff --git a/cli/src/agents/index.ts b/cli/src/agents/index.ts
index f1108dd..7f6e876 100644
--- a/cli/src/agents/index.ts
+++ b/cli/src/agents/index.ts
@@ -45,6 +45,7 @@ import { GrokActiveSessionsWatcher } from "./grok-active-sessions-watcher";
 import { GrokBuild } from "./grok-build";
 import { Hermes } from "./hermes";
 import { NotifyBridge, type NotifyEvent } from "./notify-bridge";
+import { Omp } from "./omp";
 import { OpenCode } from "./opencode";
 import { Pi } from "./pi";
 import { terminateAgentProcess } from "./process-scanner";
@@ -3547,6 +3548,8 @@ function createAgentRuntime(
 			return OpenCode.create();
 		case "pi":
 			return Pi.create();
+		case "omp":
+			return Omp.create();
 		case "cursor":
 			return Cursor.create();
 		case "fx":
diff --git a/cli/src/agents/omp.ts b/cli/src/agents/omp.ts
new file mode 100644
index 0000000..ff3ca9b
--- /dev/null
+++ b/cli/src/agents/omp.ts
@@ -0,0 +1,9 @@
+import { BUILTIN_AGENT_DESCRIPTORS } from "./agents";
+import { ACP } from "./base";
+
+/** Oh My Pi ACP runtime. */
+export class Omp extends ACP {
+	static create() {
+		return new Omp(BUILTIN_AGENT_DESCRIPTORS.omp);
+	}
+}
diff --git a/protocol/src/agents/index.ts b/protocol/src/agents/index.ts
index 90aa4c9..6d38106 100644
--- a/protocol/src/agents/index.ts
+++ b/protocol/src/agents/index.ts
@@ -26,6 +26,7 @@ export const AGENT_IDS = [
 	"copilot",
 	"cursor",
 	"pi",
+	"omp",
 	"hermes",
 	"grok-build",
 ];
diff --git a/protocol/src/ai-legacy.ts b/protocol/src/ai-legacy.ts
index ddd0357..87bba96 100644
--- a/protocol/src/ai-legacy.ts
+++ b/protocol/src/ai-legacy.ts
@@ -11,6 +11,7 @@ const _AiBackendSchema = z.enum([
 	"copilot",
 	"cursor",
 	"pi",
+	"omp",
 	"hermes",
 	"grok-build",
 ]);