Ship agent identity
in an afternoon
Register an agent once. It carries a verifiable identity and a permission boundary that any platform can check in milliseconds. No new infrastructure, no vendor lock-in.
1 API call
to register an agent
Milliseconds
to verify an identity
100%
on-chain auditable
3 protocols
REST · MCP · A2A
Two sides of the same trust
Whether you build agents or run the platforms they knock on, KYA gives you the half you're missing.
For agent builders
Agent Passport
Mint a permanent, portable identity for your agent: an ASTRA ID, cryptographic keys and a verified owner. Register once, and it works everywhere.
For platforms & enterprises
Verification Gateway
Check every inbound agent's identity, signature and trust score against the chain, in milliseconds, before it touches your systems.
Built on four guarantees
Identity that can't be forged, proof that can't be rewritten, verification that doesn't slow you down, and accountability that reaches a real human.
Compounding trust
Every verified interaction moves the score. Good behaviour earns access; failures cost it.
Immutable proof
Identities are written to a public blockchain, impossible to forge or rewrite.
Universal identity
One identity over REST, MCP and Google's A2A, with no per-platform signups.
Human accountability
Every agent traces back to a KYD-verified developer with a name attached.
Watch an agent earn access
From unregistered code to trusted access in four steps. The demo below plays through the real flow: click any step to replay it.
Ship identity in an afternoon
No new infrastructure, no vendor lock-in. Register over plain REST, then go as deep as your stack wants.
Node.js & Python SDKs
Typed clients for registration, verification and trust scoring.
MCP server
Give Claude and other MCP clients direct access to the registry.
A2A compliant
Agents verify each other over Google's agent-to-agent protocol.
Verification gateway
Drop-in middleware that checks every inbound agent before it reaches you.
$ curl -X POST https://astrasync.ai/api/agents/register \
-H "Authorization: Bearer $KYA_API_KEY" \
-d '{ "name": "support-bot", "platform": "custom" }'
{
"agentId": "ASTRA-7F3A-92KD",
"status": "registered",
"trustScore": 50,
"blockchain": { "block": 2847294 }
}One registry everyone can check, no one can rewrite
Developers stake their identity, agents carry passports, enterprises verify before granting access, and the blockchain holds the proof, outside anyone's control.
Common questions
The short version. The documentation covers the rest.
Can't find your answer? Read the documentation or talk to us.
A permanent identity record: an ASTRA ID, a cryptographic keypair and a verified owner, minted once and anchored to a public blockchain. Any platform can check it independently, no need to trust us, or anyone.
Everything in the docs
Guides, concepts and the API reference. Start with the quick start, or jump straight to the part of the stack you are working on.
Blockchain & Commerce
Start free, upgrade in-app
Self-serve plans for individual developers and small teams. Start free, upgrade in-app.
Free
Perfect for getting started
- 100 verifications/month
- Unlimited AI agents
- Basic trust scoring
- Community support
- Standard API access
Developer
For professional developers
- 10,000 verifications/month
- Advanced trust scoring
- Priority support
- Full API access
- KYD certification
- Agent ownership transfers
- KYC verification included
- Webhook integrations
Developer Plus
Enhanced credibility & features
- Everything in Developer
- 25,000 verifications/month
- Multi-user accounts
- Featured on marketplace
- Trust score boost (+10–20)
- Verified profile badge
- Advanced analytics
no credit card for the free tier · cancel anytime
Questions about developer plans
Billing, limits and upgrades on the self-serve plans.
100 verifications per month, unlimited AI agent registrations, basic trust scoring and community support. It's perfect for developers just getting started with agent identity.