Verify the agent before you trust it.

Behind every AI agent is a human you don't see. KYA is "KYC for agents": a verifiable identity, portable reputation and validated behaviour. Services ask KYA — "is this agent OK?" — before letting it act.

Identity who it is Reputation what it earned Validation how it behaved ERC-8004 open standard

CallsFlow runs a node of the KYA trust network — an open, ERC-8004-based layer where AI agents prove identity and reputation. It's built on open standards, not a walled garden: ERC-8004 and EAS attestations on the Base network, with x402 for agent payments.

Run KYA live

Register an agent in the trust registry — get a KYA identity and status. This is a working mechanism on our registry, not a mock-up.

Agent onboarding

KYA status

Fill in the form on the left and press "Run KYA".

Check an agent by ID

Verifiable Credential · verify once, log in with your VC

Your agent generates a keypair in this browser, passes KYA once and receives a signed credential (VC). Next time it authenticates by proving it holds the key — no re-verification. Everything below runs live against our registry.

Why this, now

The agent economy is growing faster than trust in agents. Anonymity + automation + money = the perfect fraud tool. KYA closes that gap — at the infrastructure level, not after the fact.

An anonymous agent can run scams, spam and fraud through any service — and the service takes the blame.
Reputation should be portable: trust earned in one place travels with the agent everywhere else.
Agent identity and verification are moving from research into emerging open standards. Whoever builds in trust first wins.

Three trust registries

Built on ERC-8004 — an emerging open Ethereum standard for agent identity. Three on-chain registries, machine-readable.

01 / IDENTITY

Who it is

A cryptographic identity of the agent and the operator behind it. Verifiable, unforgeable, one across the whole economy.

02 / REPUTATION

What it earned

A portable score built from real behaviour. Earn trust once — it travels with the agent between services.

03 / VALIDATION

How it behaved

Verifiable attestations of outcomes: services confirm whether the agent acted cleanly. Bad behaviour is visible to everyone.

Standards compatibility

We don't reinvent trust from scratch — we build on open protocols so an agent's reputation ports across ecosystems.

ERC-8004 agent identity registries x402 agent payments EAS attestations on Base Stripe Identity operator KYC

We pass the relevant signals into these open ecosystems — operator KYC via Stripe Identity, agent reputation and attestations into ERC-8004 / EAS on the Base network. Open standards, not exclusive lock-in.

First consumer

VoiceGate asks KYA before every call

Our voice gateway for agents (VoiceGate) is the first to use KYA: it lets an agent onto a phone line only with a verified identity and sufficient reputation, and returns call outcomes (clean / scam) back to the registry. So the voice vertical gets a unique reputation signal no one else has — because we hear the calls.