@@ -90,6 +90,7 @@ If setup reports the org is "already set up locally", do not delete anything to
 | Push with new resources             | `npm run push -- <org> --allow-new-files` — bypass orphan-YAML gate. **AI agents**: do NOT auto-pass this flag; confirm with the human first (see push section below) |
 | Test a call                         | `npm run call -- <org> -a <assistant-name>` or `-s <squad-name>`                  |
 | Run a simulation suite              | `npm run sim -- <org> --suite <name> --target <assistant-name>`                   |
+| Build PR-check payloads offline     | `npm run check -- <check> --dry-run` (or `--all`); `--print-payload` writes the JSON |
 | Migrate a legacy state file         | `npm run migrate` — one-shot, all orgs; required once after upgrading to the hash-store engine |
 
 ---
@@ -903,6 +904,7 @@ npm run validate -- <org>                          # Lint resources locally (fai
 npm run audit -- <org>                             # Read-only drift detector: orphan YAML, state ghosts, content-identical clusters, sibling base-slugs, dashboard orphans, inline model.tools. Exit 1 on findings.
 npm run audit -- <org> --type assistants           # Scope audit to a single resource type
 npm run sim -- <org> --suite <name> --target <name>  # Run a simulation suite against an assistant/squad (exit 0 pass, 1 fail, 3 incomplete; --timeout <min>)
+npm run check -- <check> --dry-run                 # Build a vapi-checks.yml check's inline run payload offline (exit 0 built, 2 config/build error; --print-payload [dir])
 npm run rollback -- <org> --to <ISO-timestamp>     # Re-apply a snapshot taken before a push
 npm run rollback -- <org> --list                   # List available snapshots
 
 
@@ -104,6 +104,7 @@ Every command works in two modes:
 | `npm run rollback` | — | `npm run rollback -- <org> --list` or `--to <ISO>` | Restore from a snapshot in `.vapi-state.<org>.snapshots/` (one is written before every push/apply). |
 | `npm run call` | ✅ | `npm run call -- <org> -a <name>` or `-s <squad>` | Start an interactive WebSocket call against an assistant or squad. |
 | `npm run sim` | — | `npm run sim -- <org> --suite <name> --target <name> [--timeout <min>]` | Run a simulation suite (or specific simulations) against a deployed assistant/squad. Prints the run link; exits 0 passed, 1 failed, 3 incomplete (timeout, Ctrl-C, missing results). |
+| `npm run check` | — | `npm run check -- <check>\|--all --dry-run [--print-payload [dir]]` | Build each `vapi-checks.yml` check target's inline simulation-run payload from the files on disk, with its tools, handoffs, judges and personalities. Offline: no API key, nothing sent. `--print-payload` writes the JSON (default `tmp/check-payloads/`). Exits 0 when every payload builds, 2 on a config or build error. |
 | `npm run migrate` | — | `npm run migrate` | One-time, all orgs at once: slim legacy state files to pure `name → uuid` and seed the per-developer `.vapi-state-hash/` baseline store from the old hashes. Required once after upgrading to the hash-store engine — `pull`/`push`/`apply` refuse legacy-shaped state until it runs. Idempotent. |
 | `npm run build` | — | — | Type-check the codebase (`tsc --noEmit`). |
 | `npm test` | — | — | Run regression tests (`node:test`). |
 
@@ -19,6 +19,7 @@
     "validate": "tsx src/validate-cmd.ts",
     "audit": "tsx src/audit-cmd.ts",
     "sim": "tsx src/sim-cmd.ts",
+    "check": "tsx src/check-cmd.ts",
     "rollback": "tsx src/rollback-cmd.ts",
     "promote": "tsx src/promote-cmd.ts",
     "build": "tsc --noEmit",
 
@@ -0,0 +1,226 @@
+// CLI entry: `npm run check -- <check>|--all --dry-run [--print-payload [dir]]`
+//
+// Builds each check target's inline simulation-run payload from the files
+// on disk (see check-payload.ts) and reports what would run. Config-free:
+// it needs no API key and makes no network calls in --dry-run.
+//
+// Exit codes: 0 every payload built, 2 usage, config or build error.
+
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
+import { join, relative, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+import type { CheckDefinition } from "./check-config.ts";
+import { CHECKS_CONFIG_FILE, checksConfigLoad } from "./check-config.ts";
+import type { CheckPayloadResult } from "./check-payload.ts";
+import { checkPayloadBuild } from "./check-payload.ts";
+import { promotionBindingsResolve, promotionStateParse } from "./promotion.ts";
+import { orgResourcesRead } from "./resource-parse.ts";
+import type { StateFile } from "./types.ts";
+
+const USAGE = [
+  "Usage:",
+  "  npm run check -- <check> --dry-run [--print-payload [dir]]",
+  "  npm run check -- --all --dry-run [--print-payload [dir]]",
+  "",
+  "Options:",
+  `  <check>                 A check name from ${CHECKS_CONFIG_FILE}`,
+  "  --all                   Every check",
+  "  --dry-run               Build the payloads offline; nothing is sent",
+  "  --print-payload [dir]   Write each payload as JSON (default: tmp/check-payloads)",
+  "",
+  "Exit codes: 0 payloads built, 2 usage, config or build error",
+].join("\n");
+
+const DEFAULT_PAYLOAD_DIR = "tmp/check-payloads";
+
+interface CheckArgs {
+  check?: string;
+  all: boolean;
+  dryRun: boolean;
+  payloadDir?: string;
+  help: boolean;
+}
+
+class UsageError extends Error {}
+
+function argsParse(args: string[]): CheckArgs {
+  const parsed: CheckArgs = { all: false, dryRun: false, help: false };
+  for (let index = 0; index < args.length; index++) {
+    const arg = args[index]!;
+    if (arg === "--help" || arg === "-h") parsed.help = true;
+    else if (arg === "--all") parsed.all = true;
+    else if (arg === "--dry-run") parsed.dryRun = true;
+    else if (arg === "--print-payload") {
+      const next = args[index + 1];
+      parsed.payloadDir =
+        next && !next.startsWith("--") ? args[++index] : DEFAULT_PAYLOAD_DIR;
+    } else if (arg.startsWith("-"))
+      throw new UsageError(`Unknown option: ${arg}`);
+    else if (parsed.check) throw new UsageError(`Unexpected argument: ${arg}`);
+    else parsed.check = arg;
+  }
+  if (parsed.help) return parsed;
+  if (parsed.all === Boolean(parsed.check))
+    throw new UsageError("Name one check, or pass --all");
+  return parsed;
+}
+
+function emptyState(): StateFile {
+  return promotionStateParse("{}");
+}
+
+function stateRead(root: string, org: string, warnings: string[]): StateFile {
+  const path = join(root, `.vapi-state.${org}.json`);
+  if (!existsSync(path)) {
+    warnings.push(
+      `no .vapi-state.${org}.json: references by UUID and credential bindings can't resolve`,
+    );
+    return emptyState();
+  }
+  return promotionStateParse(readFileSync(path, "utf8"));
+}
+
+function payloadFileName(check: string, target: string): string {
+  return `${check}--${target.replace(/\//g, "--")}.json`;
+}
+
+function resultPrint(
+  label: string,
+  result: CheckPayloadResult,
+  check: CheckDefinition,
+): void {
+  console.log(`\n${label}`);
+  if (result.body) {
+    const count = result.body.simulations.length;
+    console.log(
+      `  ✅ ${count} simulation${count === 1 ? "" : "s"} × ${check.iterations} iteration${check.iterations === 1 ? "" : "s"} over ${check.transport}, ${(result.bytes / 1024).toFixed(1)} KB`,
+    );
+  } else {
+    console.log(
+      `  ❌ ${result.errors.length} problem${result.errors.length === 1 ? "" : "s"}`,
+    );
+  }
+  for (const warning of result.warnings) console.log(`  ⚠️  ${warning}`);
+  for (const error of result.errors) console.log(`  ❌ ${error}`);
+}
+
+async function checkDryRun(
+  root: string,
+  check: CheckDefinition,
+  payloadDir: string | undefined,
+): Promise<boolean> {
+  if (!existsSync(join(root, "resources", check.org))) {
+    console.log(`\n${check.name}\n  ❌ resources/${check.org}/ does not exist`);
+    return false;
+  }
+  const warnings: string[] = [];
+  const resources = await orgResourcesRead(root, check.org);
+  const sourceState = stateRead(root, check.org, warnings);
+  const runState =
+    check.runOrg === check.org
+      ? sourceState
+      : stateRead(root, check.runOrg, warnings);
+  const bindingsResolved = await promotionBindingsResolve(
+    root,
+    check.org,
+    check.runOrg,
+    sourceState,
+  );
+  let ok = true;
+  for (const target of check.targets) {
+    const targetLabel = `${target.type}/${target.id}`;
+    const result = checkPayloadBuild({
+      check,
+      target,
+      resources,
+      sourceState,
+      runState,
+      bindingsResolved,
+    });
+    result.warnings.unshift(...warnings);
+    resultPrint(`${check.name} / ${targetLabel}`, result, check);
+    if (!result.body) {
+      ok = false;
+      continue;
+    }
+    if (payloadDir) {
+      const dir = resolve(root, payloadDir);
+      mkdirSync(dir, { recursive: true });
+      const file = join(dir, payloadFileName(check.name, targetLabel));
+      writeFileSync(file, `${JSON.stringify(result.body, null, 2)}\n`);
+      console.log(`  📝 ${relative(root, file)}`);
+    }
+  }
+  return ok;
+}
+
+export async function checkCommandRun(
+  args = process.argv.slice(2),
+  root = resolve(
+    process.env.VAPI_GITOPS_ROOT ??
+      fileURLToPath(new URL("..", import.meta.url)),
+  ),
+): Promise<number> {
+  let parsed: CheckArgs;
+  try {
+    parsed = argsParse(args);
+  } catch (error) {
+    if (!(error instanceof UsageError)) throw error;
+    console.error(`❌ ${error.message}\n\n${USAGE}`);
+    return 2;
+  }
+  if (parsed.help) {
+    console.log(USAGE);
+    return 0;
+  }
+  let config;
+  try {
+    config = checksConfigLoad(root);
+  } catch (error) {
+    console.error(`❌ ${CHECKS_CONFIG_FILE}: ${(error as Error).message}`);
+    return 2;
+  }
+  if (!config) {
+    console.log(
+      `No ${CHECKS_CONFIG_FILE} at the repository root; nothing to check.`,
+    );
+    return 0;
+  }
+  const names = parsed.all ? Object.keys(config.checks) : [parsed.check!];
+  const missing = names.filter((name) => !config.checks[name]);
+  if (missing.length > 0) {
+    console.error(
+      `❌ No check named ${missing.join(", ")} in ${CHECKS_CONFIG_FILE} (checks: ${Object.keys(config.checks).join(", ")})`,
+    );
+    return 2;
+  }
+  if (!parsed.dryRun) {
+    console.error(
+      "❌ Live runs aren't available yet: pass --dry-run to build the payloads offline.",
+    );
+    return 2;
+  }
+  let ok = true;
+  for (const name of names) {
+    if (!(await checkDryRun(root, config.checks[name]!, parsed.payloadDir)))
+      ok = false;
+  }
+  console.log(
+    ok ? "\n✅ Every payload built." : "\n❌ Some payloads could not be built.",
+  );
+  return ok ? 0 : 2;
+}
+
+const isMainModule =
+  resolve(process.argv[1] ?? "") === resolve(fileURLToPath(import.meta.url));
+if (isMainModule) {
+  checkCommandRun().then(
+    (code) => process.exit(code),
+    (error: unknown) => {
+      console.error(
+        `❌ Check failed: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      process.exit(2);
+    },
+  );
+}