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A typed HTTP client for @parmanasystems/server. Use this when your application calls a remote governance server rather than running governance in-process.

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Install

npm install @parmanasystems/sdk-client

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Setup

import { GovernanceClient } from "@parmanasystems/sdk-client";

const client = new GovernanceClient({
  baseUrl:   "https://governance.your-domain.com",
  publicKey: process.env.GOVERNANCE_PUBLIC_KEY!, // for local attestation verification
});

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Executing a decision

const attestation = await client.execute({
  policyId:      "loan-approval",
  policyVersion: "1.0.0",
  signals: {
    credit_score: 720,
    loan_amount:  15000,
  },
});

console.log(attestation.decision.action); // "approve"

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Verifying a decision locally

The client can verify attestations locally using the provided public key - no round trip to the server required: 
const result = client.verify(attestation);
console.log(result.valid); // true

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Health check

const health = await client.health();
console.log(health.status); // "ok"

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Error handling

The client throws typed errors for governance failures: 
try {
  const attestation = await client.execute({ ... });
} catch (error: any) {
  if (error.code === "POLICY_NOT_FOUND") { /* ... */ }
  if (error.code === "REPLAY_DETECTED")  { /* ... */ }
  if (error.code === "INVALID_SIGNALS")  { /* ... */ }
}

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See also