Examples

failproofai policies --install block-sudo block-rm-rf block-force-push block-curl-pipe-sh

failproofai policies --install sanitize-api-keys sanitize-jwt sanitize-connection-strings sanitize-bearer-tokens

import { customPolicies, allow, instruct } from "failproofai";

customPolicies.add({
  name: "slack-on-idle",
  description: "Alert Slack when the agent is waiting for input",
  match: { events: ["Notification"] },
  fn: async (ctx) => {
    const webhookUrl = process.env.SLACK_WEBHOOK_URL;
    if (!webhookUrl) return allow();

    const message = String(ctx.payload?.message ?? "Agent is waiting");
    const project = ctx.session?.cwd ?? "unknown";

    try {
      await fetch(webhookUrl, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          text: `*${message}*\nProject: \`${project}\``,
        }),
        signal: AbortSignal.timeout(5000),
      });
    } catch {
      // never block the agent if Slack is unreachable
    }

    return allow();
  },
});

SLACK_WEBHOOK_URL=https://hooks.slack.com/... failproofai policies --install --custom ./slack-alerts.js

import { customPolicies, allow, deny } from "failproofai";

customPolicies.add({
  name: "stay-on-branch",
  description: "Prevent the agent from checking out other branches",
  match: { events: ["PreToolUse"] },
  fn: async (ctx) => {
    if (ctx.toolName !== "Bash") return allow();
    const cmd = String(ctx.toolInput?.command ?? "");
    if (/git\s+checkout\s+(?!-b)/.test(cmd)) {
      return deny("Stay on the current branch. Create a new branch with -b if needed.");
    }
    return allow();
  },
});

import { customPolicies, allow, instruct } from "failproofai";

customPolicies.add({
  name: "test-before-commit",
  description: "Remind the agent to run tests before committing",
  match: { events: ["PreToolUse"] },
  fn: async (ctx) => {
    if (ctx.toolName !== "Bash") return allow();
    const cmd = String(ctx.toolInput?.command ?? "");
    if (/git\s+commit/.test(cmd)) {
      return instruct("Run tests before committing. Use `npm test` or `bun test` first.");
    }
    return allow();
  },
});

{
  "enabledPolicies": [
    "block-sudo",
    "block-rm-rf",
    "block-force-push",
    "block-push-master",
    "block-env-files",
    "sanitize-api-keys",
    "sanitize-jwt"
  ],
  "policyParams": {
    "block-push-master": {
      "protectedBranches": ["main", "release", "production"]
    }
  }
}

git add .failproofai/policies-config.json
git commit -m "Add failproofai team policies"