diff --git a/AGENTS.md b/AGENTS.md
index a9bee2eb312..e538115e730 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -133,6 +133,7 @@
   - `pnpm tsgo:extensions`: bundled extension production graph.
   - `pnpm tsgo:extensions:test`: bundled extension colocated tests.
   - `pnpm tsgo:all`: every TypeScript graph above; this is what `pnpm check` runs.
+  - `pnpm tsgo:profile [core-test|extensions-test|--all]`: profile fresh graph cost into `.artifacts/tsgo-profile/`.
   - Narrow aliases remain for local loops: `pnpm tsgo:test:src`, `pnpm tsgo:test:ui`, `pnpm tsgo:test:packages`.
 - Do not add `tsc --noEmit`, `typecheck`, or `check:types` lanes for repo type checking. Use `tsgo` graphs. `tsc` is allowed only when emitting declaration/package-boundary compatibility artifacts that `tsgo` does not replace.
 - Boundary rule: core must not know extension implementation details. Extensions hook into core through manifests, registries, capabilities, and public `openclaw/plugin-sdk/*` contracts. If you find core production code naming a specific extension, or a core test that is really testing extension-owned behavior, call it out and prefer moving coverage/logic to the owning extension or a generic contract test.
diff --git a/package.json b/package.json
index 613a553608c..1b2f4fad402 100644
--- a/package.json
+++ b/package.json
@@ -1472,6 +1472,7 @@
     "tsgo:extensions": "node scripts/run-tsgo.mjs -p tsconfig.extensions.json --incremental --tsBuildInfoFile .artifacts/tsgo-cache/extensions.tsbuildinfo",
     "tsgo:extensions:test": "node scripts/run-tsgo.mjs -p tsconfig.extensions.test.json --incremental --tsBuildInfoFile .artifacts/tsgo-cache/extensions-test.tsbuildinfo",
     "tsgo:prod": "pnpm tsgo:core && pnpm tsgo:extensions",
+    "tsgo:profile": "node scripts/profile-tsgo.mjs",
     "tsgo:test": "pnpm tsgo:core:test && pnpm tsgo:extensions:test",
     "tsgo:test:extensions": "pnpm tsgo:extensions:test",
     "tsgo:test:packages": "node scripts/run-tsgo.mjs -p tsconfig.test.packages.json --incremental --tsBuildInfoFile .artifacts/tsgo-cache/test-packages.tsbuildinfo",
diff --git a/scripts/profile-tsgo.mjs b/scripts/profile-tsgo.mjs
new file mode 100644
index 00000000000..f2a8d565edb
--- /dev/null
+++ b/scripts/profile-tsgo.mjs
@@ -0,0 +1,454 @@
+#!/usr/bin/env node
+
+import { spawnSync } from "node:child_process";
+import fs from "node:fs";
+import path from "node:path";
+import {
+  acquireLocalHeavyCheckLockSync,
+  applyLocalTsgoPolicy,
+  shouldAcquireLocalHeavyCheckLockForTsgo,
+} from "./lib/local-heavy-check-runtime.mjs";
+
+const repoRoot = path.resolve(import.meta.dirname, "..");
+const artifactRoot = path.resolve(repoRoot, ".artifacts/tsgo-profile");
+const tsgoPath = path.resolve(repoRoot, "node_modules", ".bin", "tsgo");
+
+const GRAPH_DEFINITIONS = {
+  core: {
+    config: "tsconfig.core.json",
+    description: "core production graph",
+  },
+  "core-test": {
+    config: "tsconfig.core.test.json",
+    description: "core colocated test graph",
+  },
+  extensions: {
+    config: "tsconfig.extensions.json",
+    description: "bundled extension production graph",
+  },
+  "extensions-test": {
+    config: "tsconfig.extensions.test.json",
+    description: "bundled extension colocated test graph",
+  },
+};
+
+function usage() {
+  return [
+    "Usage: pnpm tsgo:profile [graph...] [options]",
+    "",
+    "Graphs:",
+    ...Object.entries(GRAPH_DEFINITIONS).map(
+      ([name, graph]) => `  ${name.padEnd(16)} ${graph.description}`,
+    ),
+    "",
+    "Options:",
+    "  --all              Profile all graphs",
+    "  --reuse            Reuse profile tsbuildinfo files instead of forcing fresh checks",
+    "  --deep             Also write --generateTrace and --generateCpuProfile artifacts",
+    "  --explain          Also write --explainFiles artifacts",
+    "  --out=<dir>        Output directory (default: .artifacts/tsgo-profile)",
+    "  --json             Print JSON report to stdout",
+    "  --help             Show this help",
+    "",
+    "Default graphs: core-test extensions-test",
+  ].join("\n");
+}
+
+function parseArgs(argv) {
+  const graphNames = [];
+  const options = {
+    all: false,
+    deep: false,
+    explain: false,
+    json: false,
+    reuse: false,
+    outDir: artifactRoot,
+  };
+
+  for (const arg of argv) {
+    if (arg === "--help" || arg === "-h") {
+      throw new Error(usage());
+    }
+    if (arg === "--all") {
+      options.all = true;
+      continue;
+    }
+    if (arg === "--deep") {
+      options.deep = true;
+      continue;
+    }
+    if (arg === "--explain") {
+      options.explain = true;
+      continue;
+    }
+    if (arg === "--json") {
+      options.json = true;
+      continue;
+    }
+    if (arg === "--reuse") {
+      options.reuse = true;
+      continue;
+    }
+    if (arg.startsWith("--out=")) {
+      options.outDir = path.resolve(repoRoot, arg.slice("--out=".length));
+      continue;
+    }
+    if (!GRAPH_DEFINITIONS[arg]) {
+      throw new Error(`Unknown graph: ${arg}\n\n${usage()}`);
+    }
+    graphNames.push(arg);
+  }
+
+  const selectedGraphs = options.all
+    ? Object.keys(GRAPH_DEFINITIONS)
+    : graphNames.length > 0
+      ? graphNames
+      : ["core-test", "extensions-test"];
+
+  return { options, selectedGraphs };
+}
+
+function ensureDirs(outDir) {
+  fs.mkdirSync(outDir, { recursive: true });
+  fs.mkdirSync(path.join(outDir, "cache"), { recursive: true });
+}
+
+function removeIfFreshMode(filePath, reuse) {
+  if (!reuse) {
+    fs.rmSync(filePath, { force: true });
+  }
+}
+
+function runTsgo(label, args, params = {}) {
+  const { args: finalArgs, env } = applyLocalTsgoPolicy(args, process.env);
+  const releaseLock = shouldAcquireLocalHeavyCheckLockForTsgo(finalArgs, env)
+    ? acquireLocalHeavyCheckLockSync({
+        cwd: repoRoot,
+        env,
+        toolName: "tsgo-profile",
+      })
+    : () => {};
+
+  const startedAt = Date.now();
+  try {
+    const result = spawnSync(tsgoPath, finalArgs, {
+      cwd: repoRoot,
+      env,
+      encoding: "utf8",
+      maxBuffer: params.maxBuffer ?? 128 * 1024 * 1024,
+      shell: process.platform === "win32",
+    });
+    const elapsedMs = Date.now() - startedAt;
+    const stdout = result.stdout ?? "";
+    const stderr = result.stderr ?? "";
+    if (result.error) {
+      throw result.error;
+    }
+    if ((result.status ?? 1) !== 0) {
+      const output = [stdout, stderr].filter(Boolean).join("\n");
+      throw new Error(`${label} failed with exit code ${result.status ?? 1}\n${output}`);
+    }
+    return { elapsedMs, stdout, stderr };
+  } finally {
+    releaseLock();
+  }
+}
+
+function parseDiagnostics(output) {
+  const diagnostics = {};
+  for (const line of output.split(/\r?\n/u)) {
+    const match = /^(.+?):\s+([0-9.]+)(K|s)?\s*$/u.exec(line.trim());
+    if (!match) {
+      continue;
+    }
+    const [, rawKey, rawValue, unit] = match;
+    const key = rawKey.trim().replaceAll(/\s+/gu, " ");
+    const value = Number(rawValue);
+    diagnostics[key] = unit === "K" ? value * 1024 : value;
+  }
+  return diagnostics;
+}
+
+function normalizeFilePath(filePath) {
+  const normalized = filePath.trim().replaceAll("\\", "/");
+  const normalizedRoot = repoRoot.replaceAll("\\", "/");
+  if (normalized.startsWith(`${normalizedRoot}/`)) {
+    return normalized.slice(normalizedRoot.length + 1);
+  }
+  return normalized;
+}
+
+function packageNameFromNodeModule(parts, startIndex) {
+  const first = parts[startIndex + 1];
+  if (!first) {
+    return "node_modules";
+  }
+  if (first.startsWith("@")) {
+    return `${first}/${parts[startIndex + 2] ?? ""}`.replace(/\/$/u, "");
+  }
+  return first;
+}
+
+function classifyFile(relativePath) {
+  const parts = relativePath.split("/");
+  const first = parts[0];
+  if (relativePath.includes("/node_modules/") || first === "node_modules") {
+    const nodeModulesIndex = parts.indexOf("node_modules");
+    return `node_modules/${packageNameFromNodeModule(parts, nodeModulesIndex)}`;
+  }
+  if (first === "extensions") {
+    return `extensions/${parts[1] ?? "(root)"}`;
+  }
+  if (first === "packages") {
+    return `packages/${parts[1] ?? "(root)"}`;
+  }
+  if (first === "src") {
+    return `src/${parts[1] ?? "(root)"}`;
+  }
+  if (first === "ui") {
+    return `ui/${parts[1] ?? "(root)"}`;
+  }
+  if (first === "test") {
+    return `test/${parts[1] ?? "(root)"}`;
+  }
+  if (first.startsWith("/") || /^[A-Za-z]:/u.test(first)) {
+    return "(external)";
+  }
+  return first || "(unknown)";
+}
+
+function countBy(values, keyFn) {
+  const counts = new Map();
+  for (const value of values) {
+    const key = keyFn(value);
+    counts.set(key, (counts.get(key) ?? 0) + 1);
+  }
+  return [...counts.entries()]
+    .map(([key, count]) => ({ key, count }))
+    .toSorted((left, right) => right.count - left.count || left.key.localeCompare(right.key));
+}
+
+function summarizeFiles(stdout) {
+  const files = stdout
+    .split(/\r?\n/u)
+    .map(normalizeFilePath)
+    .filter(Boolean)
+    .filter((line) => !line.startsWith("Files:"));
+
+  const projectRelativeFiles = files.filter(
+    (file) => !path.isAbsolute(file) && !/^[A-Za-z]:/u.test(file),
+  );
+  const testFiles = projectRelativeFiles.filter((file) => /\.test\.[cm]?[tj]sx?$/u.test(file));
+  return {
+    totalFiles: files.length,
+    projectRelativeFiles: projectRelativeFiles.length,
+    testFiles: testFiles.length,
+    groups: countBy(projectRelativeFiles, classifyFile).slice(0, 40),
+  };
+}
+
+function diffDiagnostics(check, noCheck) {
+  const totalDelta = (check["Total time"] ?? 0) - (noCheck["Total time"] ?? 0);
+  const checkTime = check["Check time"] ?? 0;
+  return {
+    checkTimeSeconds: checkTime,
+    totalDeltaSeconds: totalDelta,
+    typeShareOfTotal:
+      check["Total time"] && checkTime ? Number((checkTime / check["Total time"]).toFixed(3)) : 0,
+  };
+}
+
+function formatSeconds(value) {
+  return `${value.toFixed(2)}s`;
+}
+
+function renderTextReport(report) {
+  const lines = [
+    "# tsgo profile",
+    "",
+    `Generated: ${report.generatedAt}`,
+    `Fresh profile caches: ${report.options.reuse ? "no" : "yes"}`,
+    "",
+  ];
+
+  for (const graph of report.graphs) {
+    const check = graph.check.diagnostics;
+    const noCheck = graph.noCheck.diagnostics;
+    lines.push(`## ${graph.name}`);
+    lines.push(`Config: ${graph.config}`);
+    lines.push(
+      `Check: wall ${formatSeconds(graph.check.elapsedMs / 1000)}, compiler total ${formatSeconds(
+        check["Total time"] ?? 0,
+      )}, check ${formatSeconds(check["Check time"] ?? 0)}, memory ${Math.round(
+        (check["Memory used"] ?? 0) / 1024 / 1024,
+      )} MiB`,
+    );
+    lines.push(
+      `NoCheck: wall ${formatSeconds(
+        graph.noCheck.elapsedMs / 1000,
+      )}, compiler total ${formatSeconds(noCheck["Total time"] ?? 0)}`,
+    );
+    lines.push(
+      `Files: compiler ${check.Files ?? "?"}, listed ${graph.files.totalFiles}, project-relative ${graph.files.projectRelativeFiles}, tests ${graph.files.testFiles}`,
+    );
+    lines.push(`File list: ${graph.files.artifact}`);
+    lines.push(
+      `Type cost: check ${formatSeconds(graph.typeCost.checkTimeSeconds)}, total delta ${formatSeconds(
+        graph.typeCost.totalDeltaSeconds,
+      )}, share ${(graph.typeCost.typeShareOfTotal * 100).toFixed(1)}%`,
+    );
+    lines.push("Top file groups:");
+    for (const group of graph.files.groups.slice(0, 15)) {
+      lines.push(`- ${group.key}: ${group.count}`);
+    }
+    if (graph.deep) {
+      lines.push(`Deep artifacts: ${graph.deep.traceDir}, ${graph.deep.cpuProfile}`);
+    }
+    if (graph.explain) {
+      lines.push(`Explain: ${graph.explain.artifact}`);
+    }
+    lines.push("");
+  }
+
+  lines.push(`JSON: ${report.paths.json}`);
+  lines.push("");
+  return `${lines.join("\n")}\n`;
+}
+
+function profileGraph(name, options) {
+  const graph = GRAPH_DEFINITIONS[name];
+  const outDir = options.outDir;
+  const graphCacheRoot = path.join(outDir, "cache");
+  const checkBuildInfo = path.join(graphCacheRoot, `${name}-check.tsbuildinfo`);
+  const noCheckBuildInfo = path.join(graphCacheRoot, `${name}-nocheck.tsbuildinfo`);
+  const configPath = graph.config;
+
+  removeIfFreshMode(checkBuildInfo, options.reuse);
+  removeIfFreshMode(noCheckBuildInfo, options.reuse);
+
+  const baseArgs = ["-p", configPath, "--pretty", "false"];
+  const listFiles = runTsgo(`${name}:listFilesOnly`, [...baseArgs, "--listFilesOnly"], {
+    maxBuffer: 256 * 1024 * 1024,
+  });
+  const filesArtifact = path.join(outDir, `${name}.files.txt`);
+  fs.writeFileSync(filesArtifact, listFiles.stdout);
+  const noCheck = runTsgo(`${name}:noCheck`, [
+    ...baseArgs,
+    "--noCheck",
+    "--incremental",
+    "--tsBuildInfoFile",
+    noCheckBuildInfo,
+    "--extendedDiagnostics",
+  ]);
+
+  const checkArgs = [
+    ...baseArgs,
+    "--incremental",
+    "--tsBuildInfoFile",
+    checkBuildInfo,
+    "--extendedDiagnostics",
+  ];
+  let deep;
+  if (options.deep) {
+    const traceDir = path.join(outDir, `${name}-trace`);
+    const cpuProfile = path.join(outDir, `${name}.cpuprofile`);
+    fs.rmSync(traceDir, { force: true, recursive: true });
+    fs.rmSync(cpuProfile, { force: true });
+    checkArgs.push("--generateTrace", traceDir, "--generateCpuProfile", cpuProfile);
+    deep = {
+      traceDir: path.relative(repoRoot, traceDir),
+      cpuProfile: path.relative(repoRoot, cpuProfile),
+    };
+  }
+  const check = runTsgo(`${name}:check`, checkArgs);
+  let explain;
+  if (options.explain) {
+    const explainArtifact = path.join(outDir, `${name}.explain.txt`);
+    const explainResult = runTsgo(`${name}:explainFiles`, [...baseArgs, "--explainFiles"], {
+      maxBuffer: 256 * 1024 * 1024,
+    });
+    fs.writeFileSync(explainArtifact, `${explainResult.stdout}${explainResult.stderr}`);
+    explain = {
+      artifact: path.relative(repoRoot, explainArtifact),
+      elapsedMs: explainResult.elapsedMs,
+    };
+  }
+
+  const checkDiagnostics = parseDiagnostics(`${check.stdout}\n${check.stderr}`);
+  const noCheckDiagnostics = parseDiagnostics(`${noCheck.stdout}\n${noCheck.stderr}`);
+  return {
+    name,
+    config: configPath,
+    description: graph.description,
+    files: {
+      ...summarizeFiles(listFiles.stdout),
+      artifact: path.relative(repoRoot, filesArtifact),
+    },
+    noCheck: {
+      elapsedMs: noCheck.elapsedMs,
+      diagnostics: noCheckDiagnostics,
+    },
+    check: {
+      elapsedMs: check.elapsedMs,
+      diagnostics: checkDiagnostics,
+    },
+    typeCost: diffDiagnostics(checkDiagnostics, noCheckDiagnostics),
+    ...(deep ? { deep } : {}),
+    ...(explain ? { explain } : {}),
+  };
+}
+
+async function main(argv) {
+  const { options, selectedGraphs } = parseArgs(argv);
+  ensureDirs(options.outDir);
+  const report = {
+    generatedAt: new Date().toISOString(),
+    options: {
+      graphs: selectedGraphs,
+      deep: options.deep,
+      explain: options.explain,
+      reuse: options.reuse,
+    },
+    graphs: [],
+    paths: {},
+  };
+
+  for (const graphName of selectedGraphs) {
+    process.stderr.write(`[tsgo-profile] profiling ${graphName}\n`);
+    report.graphs.push(profileGraph(graphName, options));
+  }
+
+  const timestamp = new Date()
+    .toISOString()
+    .replaceAll(":", "")
+    .replaceAll(".", "")
+    .replace("T", "-")
+    .replace("Z", "");
+  const jsonPath = path.join(options.outDir, `tsgo-profile-${timestamp}.json`);
+  const textPath = path.join(options.outDir, `tsgo-profile-${timestamp}.md`);
+  report.paths = {
+    json: path.relative(repoRoot, jsonPath),
+    text: path.relative(repoRoot, textPath),
+  };
+
+  fs.writeFileSync(jsonPath, `${JSON.stringify(report, null, 2)}\n`);
+  fs.writeFileSync(textPath, renderTextReport(report));
+  fs.writeFileSync(
+    path.join(options.outDir, "latest.json"),
+    `${JSON.stringify(report, null, 2)}\n`,
+  );
+  fs.writeFileSync(path.join(options.outDir, "latest.md"), renderTextReport(report));
+
+  if (options.json) {
+    process.stdout.write(`${JSON.stringify(report, null, 2)}\n`);
+  } else {
+    process.stdout.write(renderTextReport(report));
+  }
+}
+
+try {
+  await main(process.argv.slice(2));
+} catch (error) {
+  process.stderr.write(`${error instanceof Error ? error.message : String(error)}\n`);
+  process.exit(1);
+}