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Documentation Index

Fetch the complete documentation index at: https://mintlify.com/plawio/veto/llms.txt

Use this file to discover all available pages before exploring further.

sudo for AI agents

Stop agents from deleting files, leaking secrets, or pushing to prod — without slowing anyone down. Veto is the authorization kernel that sits between every agent action and execution.

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rules:
  - id: block-large-transfers
    name: Block transfers over $1,000
    action: block
    tools: [transfer_funds]
    conditions:
      - field: arguments.amount
        operator: greater_than
        value: 1000

  - id: require-approval-for-push
    name: Require approval before pushing
    action: ask
    tools: [git_push]

Quick start

Get Veto running in under 5 minutes. Works with any LLM provider and agent framework.

1

Install Veto

Install the SDK for your language:
npm install veto-sdk
2

Initialize configuration

Create your Veto configuration and default rules:
npx veto init
This creates ./veto/veto.config.yaml and sensible default rules in ./veto/rules/.
3

Wrap your tools

Add Veto to your existing agent code:
import { Veto } from 'veto-sdk';

const veto = await Veto.init();
const guarded = veto.wrap(myTools);  // Types preserved

// Pass guarded tools to your agent
const agent = createAgent({ tools: guarded });
That’s it. Your agent is now governed by Veto rules.

Explore by topic

Dive into the documentation for your use case.

Core Concepts

Learn how Veto intercepts and validates agent tool calls

Writing Rules

Create YAML rules with deterministic conditions and semantic validation

TypeScript SDK

Complete TypeScript SDK reference with type-safe APIs

Python SDK

Python SDK for all major LLM providers and frameworks

CLI Reference

Interactive Studio and headless policy operations

Integrations

Drop-in support for LangChain, Vercel AI, OpenAI, and more

Key features

Built for production. Works everywhere.

Deterministic-first

Static conditions run locally with zero latency. No API call needed. LLM validation only for semantic rules.

Provider agnostic

Works with OpenAI, Anthropic, Google, LangChain, Vercel AI SDK, and any custom tool-calling setup.

Human-in-the-loop

Route sensitive decisions to an approval queue instead of auto-blocking. Full audit trail included.

Local-first

No cloud required. Fully offline. Optional Veto Cloud for team sync and central dashboard.

Policy packs

Pre-built rule sets for common agent use cases.

Coding Agent

Protect against destructive file operations and unsafe git commands

Financial Operations

Limit transaction amounts and require approval for high-value transfers

Deployment & Infrastructure

Control production deployments and infrastructure changes

Data Access

Restrict access to sensitive data and PII

Ready to secure your AI agents?

Get started with Veto in under 5 minutes. No cloud account required.

Start Building