from jacs.a2a_discovery import discover_and_assess_sync

result = discover_and_assess_sync("https://agent.example.com")
if result["allowed"]:
    print(f"Trusted: {result['card']['name']} ({result['trust_level']})")

Add to Your Trust Store

For strict policy, establish native JACS trust from an authenticated agent document and explicit native public key. An Agent Card is self-advertised and cannot create strict identity trust by itself:

from jacs.client import JacsClient
from jacs.a2a import JACSA2AIntegration

client = JacsClient.quickstart(name="my-agent", domain="my-agent.example.com")
a2a = JACSA2AIntegration(client, trust_policy="strict")

# Assess a remote agent's trustworthiness
assessment = a2a.assess_remote_agent(remote_card_json)
print(f"JACS registered: {assessment['jacs_registered']}")
print(f"Allowed: {assessment['allowed']}")

# Obtain both values through an authenticated out-of-band channel.
a2a.trust_a2a_agent(remote_native_agent_json, remote_native_public_key_pem)

Async API

from jacs.a2a_discovery import discover_agent, discover_and_assess

card = await discover_agent("https://agent.example.com")
result = await discover_and_assess("https://agent.example.com", policy="verified", client=client)

const { discoverAndAssess } = require('@hai.ai/jacs/a2a-discovery');

const result = await discoverAndAssess('https://agent.example.com');
if (result.allowed) {
  console.log(`Trusted: ${result.card.name} (${result.trustLevel})`);
}

Add to Your Trust Store

const { JacsClient } = require('@hai.ai/jacs/client');
const { JACSA2AIntegration } = require('@hai.ai/jacs/a2a');

const client = await JacsClient.quickstart({
  name: 'my-agent',
  domain: 'my-agent.example.com',
});
const a2a = new JACSA2AIntegration(client, 'strict');

// Assess a remote agent
const assessment = a2a.assessRemoteAgent(remoteCardJson);
console.log(`JACS registered: ${assessment.jacsRegistered}`);
console.log(`Allowed: ${assessment.allowed}`);

// Obtain both through an authenticated out-of-band channel. Passing an
// Agent Card here is rejected.
a2a.trustA2AAgent(remoteNativeAgentDocument, remoteNativePublicKeyPem);