Your AI Madea Decision.Now Prove It.

Cryptographically verifiable decision logs for AI agents. Prove what your agent did, why it did it, and that it followed your rules.

Free for 1,000 proofs/month
3 lines of code
Cryptographically secure

Why Developers Use VOUCH

Real Problems
Real Solutions

From hallucinations to silent failures, VOUCH gives you visibility into every decision your agent makes.

Catch Hallucinations

Did my agent make up that email address?

Agents confidently generate false information. Users trust the output until something breaks.

"My AI is lying to me. How do I know when it hallucinates?" — Reddit r/AI_Agents

Prove Model Usage

Verify you used GPT-4o mini, not GPT-4 Turbo.

When costs spike, no visibility into which model handled which task. Cost margins disappear silently.

"My AI spend jumped 300%+ and nobody owns it." — Reddit r/Cloud

Task Completion Proof

Show the email was actually sent, not silently failed.

Multi-step tasks fail silently. Agents report success; nothing actually happened. Users discover it days later.

"AI agents get office tasks wrong 70% of the time." — CMU/Salesforce Research

Guard Rail Verification

Prove it stayed within your safety constraints.

Agents can break guidelines via prompt injection or misalignment. No proof it followed the rules you set.

"Every tool call needs to be logged with full input/output for compliance." — Reddit r/AI_Agents

Incident Debugging

Your agent failed at 2am. What exactly did it do?

Post-incident investigation is impossible without decision logs. You're blind to what the agent was thinking.

"Your agent had an incident at 2am. Can you prove what it did?" — Reddit r/AI_Agents

Silent Failure Detection

Catch bad decisions before users complain.

Boundary violations, dead-end loops, and soft failures go unnoticed. By the time you know, damage is done.

"We need clear guardrails and transparent logs, not just intelligence." — Reddit r/AI_Agents

What Your Users Will See

Proof That
Actually Proves Something

Proof Verified
v0.2.1

This decision has been cryptographically verified

Decision

"Approved email to user@example.com with verification code 47829"

Rules Followed

Email format validated
Rate limit check: 3/100 emails today
Verification code entropy > 128 bits

Timestamp

2026-02-20 02:14:32 UTC

Model Used

claude-opus-4.5

Cryptographic Signature

0x7a3b2c8f9e1d4a6b5c2e9f7a3b8c1d4e6f9a2b5c8d1e4f7a9b2c5e8f1a3d6e9

Transparent.
Verifiable.
Exportable.

Decision Details

See exactly what your agent decided and why. No black boxes.

Rule Compliance

Prove that each decision stayed within your guardrails. Audit-ready.

Cryptographic Hash

Tamper-proof signature. Admissible in legal proceedings.

Shareable & Auditable

Export for regulators, investors, or customers. One click.

How It Works

Four Steps to
Perfect Proof

1

Add One Line

Wrap your agent decision with VOUCH. That's it.

2

Define Rules

Write guardrails in plain English. We handle crypto.

3

Instant Proof

Cryptographic signature generated automatically.

4

Share & Audit

Export for regulators, investors, or customers.

Developer First

Dead Simple
API Integration

No blockchain knowledge required. Three lines of code to generate cryptographic proof.

Install

bash
npm install @vouch/sdk

Initialize

typescript
import { Vouch } from '@vouch/sdk';

const vouch = new Vouch({
  apiKey: process.env.VOUCH_API_KEY,
});

Generate Proof

typescript
// In your agent logic
const proof = await vouch.createProof({
  decision: "Send verification email to user@example.com",
  rules: [
    "Email format is valid",
    "Rate limit: max 5 emails per hour",
    "Content matches guardrails"
  ],
});

console.log(proof.url);
// → https://vouch.example.com/proof/abc123def456

Free tier includes: 1,000 proofs/month, community support, and full API access. Upgrade anytime as you scale.

Ready to Make Your AI Trustworthy?

Start generating cryptographic proofs in under 5 minutes.

No credit card required. 1,000 free proofs/month.