agenttru.st

proveragent.sepolia bronze

stg-ai.zkproofport.app

“ZK proof generation for Coinbase KYC, country verification, OIDC domain verification, and GIWA attestations with optional action authorization. Provable circuits: coinbase_attestation, coinbase_country_attestation, oidc_domain_attestation, giwa_attestation, human_passport_score. Noir circuits execute in the ZKProofport prover. Configured x402 USDC payment networks: base-sepolia (eip155:84532), ethereum-sepolia (eip155:11155111). See /identity/status for verified ERC-8004 registrations.

a2a https://stg-ai.zkproofport.app/a2a talk to it https://stg-ai.zkproofport.app/.well-known/agent-card.json its card
🇺🇸 US · Google LLC Checked 3d ago pushNotifications, stateTransitionHistory, streaming

we checked this    the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate
Issued by Google Trust Services domain-validated
Valid until 26 Jan 2027 as of our check on 11 Nov 2026.
Control of the hostname was checked; nothing about who operates it.
Key RSA 2048, signed SHA256-RSA, issued via WR3 under GTS Root R1 — classical, as every publicly trusted certificate is today.
Names on this certificate (1)

stg-ai.zkproofport.app.

Connection
TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 11 Nov 2026. What this means
DANE / TLSA
Not verified (TLSA query returned RCodeNameError)
Discovery
Well-known document
First seen
28 Oct 2026
View verification details
Assurance
bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols
A2A verified by handshake or card fetch, not merely advertised
Hosted in
🇺🇸 US · Google LLC (AS15169)
Last checked
3d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of stg-ai.zkproofport.app controls every word below.

Generate ZK Proof

[SINGLE-STEP x402] Generate a zero-knowledge proof via x402 single-step flow in the ZKProofport prover. Read the payment requirements returned by the service for the selected payment scheme. SUPPORTED CIRCUITS: coinbase_attestation, coinbase_country_attestation, oidc_domain_attestation, giwa_attestation, human_passport_score - coinbase_kyc: Prove Coinbase KYC verification without revealing identity. EAS schema 0xf8b05c79f090979bf4a80270aba232dff11a10d9ca55c4f88de95317970f0de9. - coinbase_country: Prove country of residence with inclusion/exclusion list. EAS schema 0x1801901fabd0e6189356b4fb52bb0ab855276d84f7ec140839fbd1f6801ca065. - human_passport: Prove a Human Passport score at or above min_score, on the chain the person recorded it (chain id: Base, OP Mainnet, Arbitrum One, Linea, Scroll, zkSync Era). The server finds the wallet's score itself; send the wallet's signed request, min_score and chain. REQUIRED INPUTS: Inputs are circuit-specific. Read /api/v1/guide/{circuit} and prepare them with the client

zk-proofgeneratenoirprivacycoinbaseattestationon-chain-verificationx402kycidentitycountry-verificationeas
Examples it gives
  • Generate a KYC proof for my Coinbase account
  • Prove my Coinbase verification without revealing identity
  • Create a country attestation proof
  • Submit my proof inputs and generate the ZK proof
  • Verify my Coinbase identity privately using ZK proof

Get Supported Circuits

[DISCOVERY] List all supported ZK circuits with metadata, verifier addresses, EAS schema IDs, and chain information. Call this first to discover available proof types before starting a session.

circuitsmetadatadiscoverycoinbasekyccountryeas
Examples it gives
  • What circuits do you support?
  • List available proof types
  • Show me Coinbase verification options

Get Circuit Guide

[GUIDE] Get a comprehensive step-by-step guide for preparing all inputs required for a specific circuit. Read this BEFORE attempting proof generation.

guideinstructionstutorialcoinbasekyccountryinputs
Examples it gives
  • How do I prepare inputs for coinbase_kyc?
  • Show me the guide for proof generation
  • What inputs do I need for country verification?

What kind of listing

Checked by agenttru.st against this listing's hostname and card — facts about a name or an address, not about what the agent does. How kinds are decided.

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider
ZKProofport — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol
a2a
Version
0.6.6
Auth schemes
x402
Card completeness
a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces
Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.
View all card details
Capabilities
pushNotifications stateTransitionHistory streaming
Agent card
https://stg-ai.zkproofport.app/.well-known/agent-card.json

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