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x402-gateway: wallet_verify_nostr
x402
x402-gateway: wallet_verify_nostr is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-26).
Verifies ownership of a Nostr public key by checking its cryptographic link to an Ethereum wallet address
Price / call$0.002
Success—
StatusUnknown
How this service works
x402-gateway tool: wallet_verify_nostr (market: bazaar)
Output
Returns a verification result indicating whether the Nostr public key is cryptographically linked to and owned by the specified Ethereum wallet address, including validity status and any proof details.
Example use cases
Authenticate Nostr user before payment
“Before I send crypto to this person, verify that their Nostr profile npub1xyz789... is actually linked to and owned by the Ethereum address 0x1234abcd... so I know it's really them.”
Gate decentralized app access by Nostr-wallet binding
“I need to check if the Nostr pubkey npub1qwerty... is cryptographically tied to wallet 0xDeAdBeEf... before granting them access to our members-only content.”
Validate cross-platform identity claim
“This creator is claiming their Nostr account npub1abc000... is linked to their on-chain wallet 0x9876Fedc.... Can you run a verification to confirm that claim is legit?”
Technical details
Endpoint
POSThttps://x402.freeq.one/market/bazaar/tools/wallet_verify_nostr?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify cross-platform identity between a Nostr decentralized social account and an Ethereum wallet, particularly for trustless identity binding, gating access, or confirming ownership before executing a payment or granting privileges. Prefer this over generic signature verification when both a Nostr key and an Ethereum address are involved.
Side effects
- Invalid or malformed Nostr public key format returns an error
- Ethereum address not checksummed or invalid returns a validation error
- No cryptographic link found between the Nostr key and wallet returns a failed verification
- Network or RPC timeout when resolving on-chain data
- Missing required tool parameter in request body
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tool | string | Tool name (see GET /tools for the catalog) |
Tags
x402
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