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x402 Attestation Verify
x402
x402 Attestation Verify is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.020000/call, status unknown (last checked 2026-10-01).
Verifies the validity of a blockchain attestation record on Base or Solana via a paid API call
Price / call$0.020000
Success—
StatusUnknown
How this service works
24 paid x402 infrastructure APIs for AI agent fleets: buy advisor, audition coach, guard, proxy, MPP, attestations, and pipeline orchestration.
Output
Returns a verification outcome indicating whether the specified attestation is valid, along with relevant attestation details such as issuer, subject, status, and any associated metadata from the Base or Solana registry.
Example use cases
Onboard verified Web3 users safely
“Before we let this new user access our platform, can you quickly verify their identity attestation on Solana? I need to know if it's still active and legitimate.”
Validate credentials before granting access
“This person claims they have a verified developer credential. Can you check if attestation ID 'att_dev_2024' is valid on Base so we know we can trust their qualification?”
Check proof of achievement authenticity
“A user submitted a blockchain-based proof of their achievement. Can you verify whether that attestation actually exists and is valid on Solana before we award them the badge?”
Technical details
Endpoint
POSThttps://x402-agent-suite-production.up.railway.app/api/attestation/verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to cryptographically verify that a specific attestation ID exists and is valid on Base or Solana blockchains, particularly in workflows involving decentralized identity, credential verification, or trust establishment for on-chain claims. Prefer this over the lookup endpoint when you need a definitive validity check rather than just retrieving attestation data.
Side effects
- Invalid or malformed attestationId returns a 400 error
- Attestation not found on-chain returns a not-found or null result
- Payment failure on Base or Solana prevents the call from completing
- Network or RPC issues with Base/Solana cause timeouts or 5xx errors
- Attestation has been revoked, returning a valid response but with revoked status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"attestation": {
"allowed": true,
"attestationId": "att_example"
}
}
}Tags
x402
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