diff --git a/scripts/v2-plugin-sentinel-test.mjs b/scripts/v2-plugin-sentinel-test.mjs
index a11eb8f..d2df55b 100644
--- a/scripts/v2-plugin-sentinel-test.mjs
+++ b/scripts/v2-plugin-sentinel-test.mjs
@@ -1,78 +1,41 @@
 import assert from "node:assert/strict"
 import plugin, { OPENCODE_LOOP_V2_PLUGIN_ID } from "../src/source/opencode2/experimental.js"
 import {
+  OPENCODE_LOOP_V2_REQUIRED_COMMANDS,
   OPENCODE_LOOP_V2_RUNTIME_REQUIREMENTS,
   inspectOpenCode2CommandDraft,
-  inspectOpenCode2Context,
+  inspectOpenCode2CommandFiles,
   openCode2LoopRuntimeStatus,
 } from "../src/source/opencode2/capabilities.js"
 
 assert.equal(plugin.id, OPENCODE_LOOP_V2_PLUGIN_ID)
-assert.equal(plugin.id, "bybrawe.opencode-loop.v2.experimental")
 assert.equal(typeof plugin.setup, "function")
-assert.deepEqual(OPENCODE_LOOP_V2_RUNTIME_REQUIREMENTS, [
-  "command.add",
-  "session.events",
-  "session.prompt",
-])
+assert.deepEqual(OPENCODE_LOOP_V2_RUNTIME_REQUIREMENTS, ["command.files", "session.events", "session.prompt"])
 
-let transforms = 0
 let registered
-const currentContext = {
+const context = {
   command: {
     transform: async (callback) => {
-      transforms += 1
       registered = callback
       return { dispose: async () => {} }
     },
   },
 }
-await plugin.setup(currentContext)
-assert.equal(transforms, 1)
+await plugin.setup(context)
 assert.equal(typeof registered, "function")
 
-const currentDraft = {
-  list: () => [],
-  get: () => undefined,
+const commands = OPENCODE_LOOP_V2_REQUIRED_COMMANDS.map((name) => ({ name }))
+const draft = {
+  list: () => commands,
+  get: (name) => commands.find((item) => item.name === name),
   update: () => {},
   remove: () => {},
 }
-await registered(currentDraft)
-
-assert.deepEqual(inspectOpenCode2Context(currentContext), {
-  commandTransform: true,
-  sessionEvents: false,
-  sessionPrompt: false,
-})
-assert.deepEqual(inspectOpenCode2CommandDraft(currentDraft), {
-  list: true,
-  get: true,
-  update: true,
-  remove: true,
-  add: false,
-})
-assert.deepEqual(openCode2LoopRuntimeStatus(currentContext, currentDraft).blockers, [
-  "command.add",
-  "session.events",
-  "session.prompt",
-])
-assert.equal(openCode2LoopRuntimeStatus(currentContext, currentDraft).ready, false)
-
-const futureContext = {
-  command: { transform: async () => ({ dispose: async () => {} }) },
-  event: { subscribe: async () => ({ dispose: async () => {} }) },
-  session: { prompt: async () => ({}) },
-}
-const futureDraft = { ...currentDraft, add: () => {} }
-assert.deepEqual(openCode2LoopRuntimeStatus(futureContext, futureDraft).blockers, [])
-assert.equal(openCode2LoopRuntimeStatus(futureContext, futureDraft).ready, true)
-
-let missingCapabilityFailed = false
-try {
-  await plugin.setup({ command: {} })
-} catch (error) {
-  missingCapabilityFailed = /command\.transform capability is unavailable/.test(String(error))
-}
-assert.equal(missingCapabilityFailed, true)
+await registered(draft)
+assert.deepEqual(inspectOpenCode2CommandDraft(draft), { list: true, get: true, update: true, remove: true })
+assert.equal(inspectOpenCode2CommandFiles(draft).ready, true)
+assert.deepEqual(inspectOpenCode2CommandFiles(draft).missing, [])
+assert.deepEqual(openCode2LoopRuntimeStatus(context, draft).blockers, ["session.events", "session.prompt"])
 
+await plugin.setup({})
 console.log("OpenCode 2 plugin sentinel contract passed")
diff --git a/src/source/opencode2/capabilities.js b/src/source/opencode2/capabilities.js
index 9ec486d..417db7c 100644
--- a/src/source/opencode2/capabilities.js
+++ b/src/source/opencode2/capabilities.js
@@ -6,8 +6,30 @@ function frozenRecord(value) {
   return Object.freeze(value)
 }
 
+function commandName(value) {
+  if (!value || typeof value !== "object") return undefined
+  for (const key of ["name", "id", "command"]) {
+    const candidate = value[key]
+    if (typeof candidate === "string" && candidate.trim()) return candidate.trim()
+  }
+  return undefined
+}
+
+export const OPENCODE_LOOP_V2_COMMAND_SOURCE = "command-files"
+
+export const OPENCODE_LOOP_V2_REQUIRED_COMMANDS = Object.freeze([
+  "loop",
+  "loop-now",
+  "loop-pause",
+  "loop-resume",
+  "loop-stop",
+  "loop-status",
+  "loop-clear",
+  "loop-help",
+])
+
 export const OPENCODE_LOOP_V2_RUNTIME_REQUIREMENTS = Object.freeze([
-  "command.add",
+  "command.files",
   "session.events",
   "session.prompt",
 ])
@@ -31,17 +53,49 @@ export function inspectOpenCode2CommandDraft(draft) {
     get: hasFunction(draft, "get"),
     update: hasFunction(draft, "update"),
     remove: hasFunction(draft, "remove"),
-    add: hasFunction(draft, "add") || hasFunction(draft, "create"),
+  })
+}
+
+export function inspectOpenCode2CommandFiles(draft, requiredCommands = OPENCODE_LOOP_V2_REQUIRED_COMMANDS) {
+  const command = inspectOpenCode2CommandDraft(draft)
+  const required = [...requiredCommands].map((value) => String(value || "").trim()).filter(Boolean)
+  const available = new Set()
+
+  if (command.list) {
+    try {
+      for (const item of draft.list() || []) {
+        const name = commandName(item)
+        if (name) available.add(name)
+      }
+    } catch {}
+  }
+
+  if (command.get) {
+    for (const name of required) {
+      if (available.has(name)) continue
+      try {
+        if (draft.get(name)) available.add(name)
+      } catch {}
+    }
+  }
+
+  const missing = required.filter((name) => !available.has(name))
+  return frozenRecord({
+    source: OPENCODE_LOOP_V2_COMMAND_SOURCE,
+    ready: missing.length === 0,
+    required: Object.freeze(required),
+    available: Object.freeze([...available].filter((name) => required.includes(name))),
+    missing: Object.freeze(missing),
   })
 }
 
 export function openCode2LoopRuntimeStatus(ctx, commandDraft) {
   const context = inspectOpenCode2Context(ctx)
   const command = inspectOpenCode2CommandDraft(commandDraft)
+  const commandFiles = inspectOpenCode2CommandFiles(commandDraft)
   const blockers = []
 
-  if (!context.commandTransform) blockers.push("command.transform")
-  if (!command.add) blockers.push("command.add")
+  if (!commandFiles.ready) blockers.push("command.files")
   if (!context.sessionEvents) blockers.push("session.events")
   if (!context.sessionPrompt) blockers.push("session.prompt")
 
@@ -50,5 +104,6 @@ export function openCode2LoopRuntimeStatus(ctx, commandDraft) {
     blockers: Object.freeze(blockers),
     context,
     command,
+    commandFiles,
   })
 }
diff --git a/src/source/opencode2/experimental.js b/src/source/opencode2/experimental.js
index 57c95dd..968e461 100644
--- a/src/source/opencode2/experimental.js
+++ b/src/source/opencode2/experimental.js
@@ -1,17 +1,19 @@
 import { define } from "@opencode-ai/plugin/v2/promise"
-import { inspectOpenCode2Context } from "./capabilities.js"
+import { inspectOpenCode2CommandFiles, inspectOpenCode2Context } from "./capabilities.js"
 
 export const OPENCODE_LOOP_V2_PLUGIN_ID = "bybrawe.opencode-loop.v2.experimental"
 
+export async function registerOpenCode2CommandProbe(ctx) {
+  if (!inspectOpenCode2Context(ctx).commandTransform) return undefined
+  return await ctx.command.transform((draft) => {
+    inspectOpenCode2CommandFiles(draft)
+  })
+}
+
 export const OpenCodeLoopV2ExperimentalPlugin = define({
   id: OPENCODE_LOOP_V2_PLUGIN_ID,
   async setup(ctx) {
-    const capabilities = inspectOpenCode2Context(ctx)
-    if (!capabilities.commandTransform) {
-      throw new Error("OpenCode 2 command.transform capability is unavailable")
-    }
-
-    await ctx.command.transform(() => {})
+    await registerOpenCode2CommandProbe(ctx)
   },
 })