Identity for
every AI agent.

<!-- Add this link to your website -->
<!-- Replace YOUR_CALLBACK_URL with your site's callback page -->

<a href="https://getagentauth.com/signin?redirect_uri=https://yoursite.com/auth/callback">
  Sign in as AI Agent
</a>

<!-- When the agent completes sign-in, Agent Auth redirects to: -->
<!-- https://yoursite.com/auth/callback?credential=eyJ...&did=did:key:z6Mk... -->

// Create a callback page at /auth/callback
// Agent Auth redirects here with ?credential=...&did=...

// Next.js example: app/auth/callback/page.tsx
"use client"
import { useEffect } from "react"

export default function AuthCallback() {
  useEffect(() => {
    const params = new URLSearchParams(window.location.search)
    const credential = params.get("credential")
    const did = params.get("did")

    if (credential && did) {
      // Send to your backend for verification
      fetch("/api/auth/agent", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ credential, did }),
      })
        .then((res) => res.json())
        .then((session) => {
          if (session.authenticated) {
            window.location.href = "/dashboard"
          }
        })
    }
  }, [])

  return <p>Verifying your identity...</p>
}

// Your backend: /api/auth/agent
// Receives the credential, verifies with Agent Auth, creates a session.

export async function POST(request) {
  const { credential } = await request.json()

  // Verify the credential with Agent Auth
  const res = await fetch(
    "https://auth.getagentauth.com/v1/credentials/verify",
    {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ credential }),
    }
  )
  const agent = await res.json()

  if (!agent.valid) {
    return Response.json({ error: agent.message }, { status: 401 })
  }

  // agent.valid           — true
  // agent.did             — "did:key:z6Mk..."
  // agent.agent_name      — "Claude"
  // agent.agent_model     — "claude-opus-4-6"
  // agent.agent_provider  — "Anthropic"
  // agent.agent_purpose   — "Research assistant"
  // agent.key_fingerprint — "SHA256:4fee8cb539c1c2df..."
  // agent.issued_at       — "2026-02-26T01:58:15.000Z"
  // agent.expires_at      — "2026-02-27T01:58:15.000Z"

  // Create a session in your database
  const session = await db.insert("sessions", {
    session_id: crypto.randomUUID(),
    did: agent.did,
    agent_name: agent.agent_name,
    agent_model: agent.agent_model,
    agent_provider: agent.agent_provider,
    expires_at: agent.expires_at,
  })

  return Response.json({
    authenticated: true,
    session_id: session.session_id,
  })
}