fix(policy): scope Hermes messaging policies

agents/hermes/policy-additions.yaml

@@ -146,7 +146,11 @@ network_policies:
       - { path: /usr/bin/python3* }
       - { path: /opt/hermes/.venv/bin/python }
 
-  # ── Messaging — pre-allowed for agent notifications ───────────
+  # ── Messaging policy templates ─────────────────────────────────
+  # These entries are agent-specific channel templates. During sandbox
+  # creation, NemoClaw filters out entries for messaging channels that were not
+  # selected, so a Discord-only Hermes sandbox does not retain Telegram, Slack,
+  # or WeChat egress.
   telegram:
     name: telegram
     endpoints:

src/lib/onboard.ts

@@ -5261,6 +5261,7 @@ async function createSandbox(
       directGpu: effectiveSandboxGpuConfig.sandboxGpuEnabled,
       dockerGpuPatch: useDockerGpuPatch,
       additionalPresets: hermesToolGateways,
+      agentName: agent?.name || null,
     },
   );
   if (initialSandboxPolicy.cleanup) {

src/lib/onboard/initial-policy.test.ts

@@ -154,6 +154,42 @@ network_policies:
     });
   });
 
+  it("records active channel policies already provided by an agent base policy", () => {
+    const basePolicyPath = tmpPolicy("version: 1\nnetwork_policies:\n  discord: {}\n");
+
+    expect(prepareInitialSandboxCreatePolicy(basePolicyPath, ["discord"])).toEqual({
+      policyPath: basePolicyPath,
+      appliedPresets: ["discord"],
+    });
+  });
+
+  it("filters inactive Hermes messaging policies from the create-time policy", () => {
+    const basePolicyPath = tmpPolicy(
+      [
+        "version: 1",
+        "network_policies:",
+        "  pypi: {}",
+        "  telegram: {}",
+        "  discord: {}",
+        "  slack: {}",
+        "  wechat_bridge: {}",
+        "",
+      ].join("\n"),
+    );
+
+    const prepared = prepareInitialSandboxCreatePolicy(basePolicyPath, ["discord"], {
+      agentName: "hermes",
+    });
+
+    expect(prepared.policyPath).not.toBe(basePolicyPath);
+    expect(prepared.appliedPresets).toEqual(["discord"]);
+    expect(getNetworkPolicyNames(fs.readFileSync(prepared.policyPath, "utf-8"))).toEqual(
+      new Set(["pypi", "discord"]),
+    );
+    expect(prepared.cleanup?.()).toBe(true);
+    expect(fs.existsSync(prepared.policyPath)).toBe(false);
+  });
+
   it("merges missing create-time presets into a temporary policy", () => {
     const basePolicyPath = tmpPolicy("version: 1\nnetwork_policies:\n  base: {}\n");
 

src/lib/onboard/initial-policy.ts

@@ -17,6 +17,13 @@ const CREATE_TIME_POLICY_PRESETS_BY_CHANNEL: Record<string, string[]> = {
   slack: ["slack"],
 };
 
+const HERMES_MESSAGING_POLICY_KEYS: Record<string, string[]> = {
+  discord: ["discord"],
+  slack: ["slack"],
+  telegram: ["telegram"],
+  wechat: ["wechat_bridge"],
+};
+
 const PROC_PATH = "/proc";
 const PROC_COMM_READ_WRITE_PATHS = ["/proc/self/comm", "/proc/self/task/*/comm"];
 
@@ -161,18 +168,58 @@ export function getNetworkPolicyNames(policyContent: string): Set<string> | null
   }
 }
 
+function isYamlObject(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function filterHermesInactiveMessagingPolicies(
+  policyContent: string,
+  activeMessagingChannels: string[],
+): { content: string; changed: boolean } {
+  const parsed = YAML.parse(policyContent);
+  if (!isYamlObject(parsed) || !isYamlObject(parsed.network_policies)) {
+    return { content: policyContent, changed: false };
+  }
+
+  const active = new Set(activeMessagingChannels);
+  let changed = false;
+  for (const [channel, policyKeys] of Object.entries(HERMES_MESSAGING_POLICY_KEYS)) {
+    if (active.has(channel)) continue;
+    for (const key of policyKeys) {
+      if (Object.prototype.hasOwnProperty.call(parsed.network_policies, key)) {
+        delete parsed.network_policies[key];
+        changed = true;
+      }
+    }
+  }
+
+  return {
+    content: changed ? YAML.stringify(parsed) : policyContent,
+    changed,
+  };
+}
+
 export function prepareInitialSandboxCreatePolicy(
   basePolicyPath: string,
   activeMessagingChannels: string[],
-  options: { directGpu?: boolean; dockerGpuPatch?: boolean; additionalPresets?: string[] } = {},
+  options: {
+    directGpu?: boolean;
+    dockerGpuPatch?: boolean;
+    additionalPresets?: string[];
+    agentName?: string | null;
+  } = {},
 ): InitialSandboxPolicy {
   const directGpuPolicy = options.directGpu
     ? prepareDirectGpuSandboxPolicy(basePolicyPath, {
         procReadWrite: options.dockerGpuPatch === true,
       })
     : null;
-  const effectiveBasePolicyPath = directGpuPolicy?.policyPath || basePolicyPath;
+  let effectiveBasePolicyPath = directGpuPolicy?.policyPath || basePolicyPath;
   const cleanupFns = directGpuPolicy?.cleanup ? [directGpuPolicy.cleanup] : [];
+  const buildCleanup = () =>
+    cleanupFns.length > 0
+      ? () => cleanupFns.map((cleanup) => cleanup()).every(Boolean)
+      : undefined;
   const requestedCreateTimePresets = [
     ...new Set(
       [
@@ -183,26 +230,47 @@ export function prepareInitialSandboxCreatePolicy(
       ],
     ),
   ];
-  const combinedCleanup =
-    cleanupFns.length > 0 ? () => cleanupFns.map((cleanup) => cleanup()).every(Boolean) : undefined;
+  const dedupe = (values: string[]) => [...new Set(values.filter(Boolean))];
 
-  if (requestedCreateTimePresets.length === 0) {
+  let basePolicy = fs.readFileSync(effectiveBasePolicyPath, "utf-8");
+  if (options.agentName === "hermes") {
+    const filtered = filterHermesInactiveMessagingPolicies(basePolicy, activeMessagingChannels);
+    if (filtered.changed) {
+      const policyPath = secureTempFile("nemoclaw-agent-policy", ".yaml");
+      fs.writeFileSync(policyPath, filtered.content, { encoding: "utf-8", mode: 0o600 });
+      cleanupFns.push(() => {
+        try {
+          cleanupTempDir(policyPath, "nemoclaw-agent-policy");
+          return true;
+        } catch {
+          return false;
+        }
+      });
+      effectiveBasePolicyPath = policyPath;
+      basePolicy = filtered.content;
+    }
+  }
+
+  const basePolicyNames = getNetworkPolicyNames(basePolicy);
+  if (basePolicyNames === null) {
     return {
       policyPath: effectiveBasePolicyPath,
       appliedPresets: [],
-      cleanup: combinedCleanup,
+      cleanup: buildCleanup(),
     };
   }
+  const existingChannelPresets = activeMessagingChannels.filter((channel) =>
+    basePolicyNames.has(channel),
+  );
 
-  const basePolicy = fs.readFileSync(effectiveBasePolicyPath, "utf-8");
-  const basePolicyNames = getNetworkPolicyNames(basePolicy);
-  if (basePolicyNames === null) {
+  if (requestedCreateTimePresets.length === 0) {
     return {
       policyPath: effectiveBasePolicyPath,
-      appliedPresets: [],
-      cleanup: combinedCleanup,
+      appliedPresets: dedupe(existingChannelPresets),
+      cleanup: buildCleanup(),
     };
   }
+
   const existingCreateTimePresets = requestedCreateTimePresets.filter((preset) =>
     basePolicyNames.has(preset),
   );
@@ -212,8 +280,8 @@ export function prepareInitialSandboxCreatePolicy(
   if (createTimePresets.length === 0) {
     return {
       policyPath: effectiveBasePolicyPath,
-      appliedPresets: existingCreateTimePresets,
-      cleanup: combinedCleanup,
+      appliedPresets: dedupe([...existingChannelPresets, ...existingCreateTimePresets]),
+      cleanup: buildCleanup(),
     };
   }
 
@@ -237,7 +305,11 @@ export function prepareInitialSandboxCreatePolicy(
 
   return {
     policyPath,
-    appliedPresets: [...existingCreateTimePresets, ...mergedPolicy.appliedPresets],
-    cleanup: () => cleanupFns.map((cleanup) => cleanup()).every(Boolean),
+    appliedPresets: dedupe([
+      ...existingChannelPresets,
+      ...existingCreateTimePresets,
+      ...mergedPolicy.appliedPresets,
+    ]),
+    cleanup: buildCleanup(),
   };
 }

src/lib/policy/index.ts

@@ -84,6 +84,92 @@ function loadPreset(name: string): string | null {
   return fs.readFileSync(file, "utf-8");
 }
 
+function isPolicyObject(value: PolicyValue): value is PolicyObject {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function parseNetworkPolicies(content: string | null | undefined): PolicyObject | null {
+  if (!content) return null;
+  try {
+    const parsed = YAML.parse(content);
+    const networkPolicies = isPolicyDocument(parsed) ? parsed.network_policies : null;
+    return isPolicyObject(networkPolicies) ? networkPolicies : null;
+  } catch {
+    return null;
+  }
+}
+
+function parsePresetPolicyKeys(presetContent: string | null | undefined): string[] {
+  const presetEntries = extractPresetEntries(presetContent);
+  if (!presetEntries) return [];
+  return Object.keys(parseNetworkPolicies(`network_policies:\n${presetEntries}`) || {});
+}
+
+function selectAgentPolicyKeys(
+  agentPolicies: PolicyObject,
+  presetName: string,
+  builtinPresetContent: string,
+): string[] {
+  const builtinKeys = parsePresetPolicyKeys(builtinPresetContent);
+  if (
+    builtinKeys.length > 0 &&
+    builtinKeys.every((key) => Object.prototype.hasOwnProperty.call(agentPolicies, key))
+  ) {
+    return builtinKeys;
+  }
+
+  if (Object.prototype.hasOwnProperty.call(agentPolicies, presetName)) {
+    return [presetName];
+  }
+
+  return Object.entries(agentPolicies)
+    .filter(([, value]) => isPolicyObject(value) && value.name === presetName)
+    .map(([key]) => key);
+}
+
+function loadAgentPresetContent(
+  sandboxName: string,
+  presetName: string,
+  builtinPresetContent: string,
+): string | null {
+  try {
+    const sandbox = registry.getSandbox(sandboxName);
+    if (!sandbox?.agent) return null;
+
+    const agent = loadAgent(sandbox.agent);
+    if (!agent?.policyAdditionsPath || !fs.existsSync(agent.policyAdditionsPath)) return null;
+
+    const agentPolicies = parseNetworkPolicies(
+      fs.readFileSync(agent.policyAdditionsPath, "utf-8"),
+    );
+    if (!agentPolicies) return null;
+
+    const keys = selectAgentPolicyKeys(agentPolicies, presetName, builtinPresetContent);
+    if (keys.length === 0) return null;
+
+    const selectedPolicies: PolicyObject = {};
+    for (const key of keys) selectedPolicies[key] = agentPolicies[key];
+
+    return YAML.stringify({
+      preset: {
+        name: presetName,
+        description: `${agent.displayName} ${presetName} policy`,
+      },
+      network_policies: selectedPolicies,
+    });
+  } catch {
+    return null;
+  }
+}
+
+function loadPresetForSandbox(sandboxName: string, presetName: string): string | null {
+  const builtinPresetContent = loadPreset(presetName);
+  if (!builtinPresetContent) return null;
+  return (
+    loadAgentPresetContent(sandboxName, presetName, builtinPresetContent) || builtinPresetContent
+  );
+}
+
 /**
  * Extract the bare hostnames declared in a preset YAML (anything matched by
  * `host: <value>`), with surrounding quotes stripped. Used to show the
@@ -440,7 +526,7 @@ function removePreset(sandboxName: string, presetName: string): boolean {
   // Resolve preset content: built-in first, then custom presets persisted
   // in the registry. `isCustom` controls which registry bucket to prune on
   // success.
-  let presetContent: string | null = loadPreset(presetName);
+  let presetContent: string | null = loadPresetForSandbox(sandboxName, presetName);
   let isCustom = false;
   if (!presetContent) {
     const custom = registry
@@ -679,7 +765,7 @@ function applyPreset(
   presetName: string,
   options: Record<string, unknown> = {},
 ): boolean {
-  const presetContent = loadPreset(presetName);
+  const presetContent = loadPresetForSandbox(sandboxName, presetName);
   if (!presetContent) {
     console.error(`  Cannot load preset: ${presetName}`);
     return false;
@@ -716,7 +802,7 @@ function applyPresets(sandboxName: string, presetNames: string[]): boolean {
   const endpointLogs: string[][] = [];
 
   for (const presetName of uniquePresetNames) {
-    const presetContent = loadPreset(presetName);
+    const presetContent = loadPresetForSandbox(sandboxName, presetName);
     if (!presetContent) {
       console.error(`  Cannot load preset: ${presetName}`);
       return false;
@@ -947,7 +1033,7 @@ function getGatewayPresets(sandboxName: string): string[] | null {
   const matched = [];
 
   for (const preset of listPresets()) {
-    const content = loadPreset(preset.name);
+    const content = loadPresetForSandbox(sandboxName, preset.name);
     if (!content) continue;
     const entries = extractPresetEntries(content);
     if (!entries) continue;