The Deterministic Verification Layer for Enterprise AI.
Gateia is a deterministic verification layer for AI applications. It acts as a final, immutable security gate between your models and your customers.
Unlike "AI-judging-AI" solutions, Gateia enforces strict, code-based contracts and deterministic policies that block known unsafe patterns—regardless of the underlying model (OpenAI, Anthropic, or Llama).
In production, probability is a liability. Gateia restores deterministic control.
- 🛡️ Deterministic Verification: Gateia does not use LLMs to verify. It uses deterministic logic and regex engines to validate outputs.
- 🏗️ Contract-First Architecture: Define your data requirements with Zod schemas. If the output doesn't match, it doesn't ship.
- 📋 Audit-Ready Logging: Every decision is traced, logged, and categorized by severity, making compliance (SOC2, HIPAA) audits straightforward.
- 🔒 Fail-Closed Security: If a policy returns a block signal (even with malformed data), Gateia defaults to blocking.
npm install gateia zodScenario: You have an AI Customer Support Agent. You need to block refund guarantees and PII.
import { verify } from "gateia";
import { z } from "zod";
const Reply = z.object({ reply: z.string() });
const res = await verify({
output: { reply: "Refund guaranteed. Email me at test@example.com" }, // pretend this came from an LLM
contract: Reply,
policies: ["finance-safe", "pii-safe"]
});
console.log(res.allowed ? "ALLOWED" : "BLOCKED");Gateia ships with battle-tested policies for common enterprise risks.
| Policy ID | Risk Category | Description | Severity |
|---|---|---|---|
finance-safe |
Compliance | Blocks non-compliant guarantee language (e.g., "100% no risk", "guaranteed return"). | High |
pii-safe |
Privacy | Blocks personally identifiable information (emails, phone numbers, etc.). | High |
secrets-safe |
Security | Detects leaked API keys (AWS, Stripe, OpenAI, Slack) and private keys. | High |
markup-safe |
Security | Prevents XSS by blocking <script>, iframe, and other HTML injection vectors. |
High |
Gateia leverages TypeScript generics to ensure your security policies are strictly typed against your contracts.
// Your contract expects { score: number }
const Contract = z.object({ score: z.number() });
// TypeScript knows 'output' is { score: number }
const result = await verify({
output: data,
contract: Contract,
policies: [{
id: 'check-score',
mode: 'enforce',
// Compile Error if you access invalid properties
check: (output) => {
if (output.score < 0) return { outcome: 'block', violations: [...] }
return { outcome: 'pass' }
}
}]
});Deploy policies without disrupting user flow. Violations are recorded but allowed remains true.
const result = await verify({
output: output,
contract: z.any(),
policies: ['finance-safe'],
mode: 'audit' // Logs violations, does not block.
});Every call to verify() returns a comprehensive EnforcementReport. Use this for your internal dashboards and compliance logs.
Note: safeOutput is always included on the response, but it will be undefined when allowed === false (contract failure or policy block).
{
"allowed": false,
"safeOutput": null,
"traceId": "123e4567-e89b-12d3-a456-426614174000",
"enforcement": {
"contract": { "outcome": "pass" },
"appliedPolicies": [
{ "id": "finance-safe", "outcome": "block" },
{ "id": "pii-safe", "outcome": "pass" }
],
"violations": [
{
"policyId": "finance-safe",
"code": "FIN_GUARANTEE",
"message": "Contains forbidden guarantee language: 'no risk'",
"severity": "high"
}
]
}
}MIT