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Vextorium Solana Signature Verify
x402
Vextorium Solana Signature Verify is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).
Verifies a Solana Ed25519 signature against a message and public key, returning validity, signer address, algorithm used, and message byte length.
Price / call$0.003
Success—
StatusUnknown
How this service works
Verify an Ed25519 Solana signature (Phantom/Solflare signMessage) for a message and public key; signature in base58, base64 or hex. Local computation.
Output
Returns a JSON object with: `valid` (boolean indicating whether the signature is valid), `address` (the Solana wallet address derived from the public key), `algorithm` (the cryptographic algorithm used, e.g. 'Ed25519'), and `bytes_message` (the byte length of the signed message). If invalid, `valid` is false.
Example use cases
Wallet ownership proof for dApp login
“A user claims to own Solana wallet CGoFePajwf11M2VpQjp17p1bLGZ5BrTM2yFJxnFHZTDe and signed the challenge message 'Login:12345' with signature '5J3mBbAH...'. Can you verify that signature to confirm they actually own that wallet?”
Authenticating an off-chain governance vote
“We got a governance vote submission where the voter signed the message 'Vote:ProposalA:Yes' with their Solana wallet. The public key is 'CGoFePajwf11M2VpQjp17p1bLGZ5BrTM2yFJxnFHZTDe' and the signature is '3XkLm...'. Verify the signature is valid so we can count the vote.”
Verifying a signed data payload from a Solana user
“A Solana user sent us a signed payload — message is 'transfer:100USDC:recipient123', signature is '2HqRt...abc', and their public key is 'CGoFePajwf11M2VpQjp17p1bLGZ5BrTM2yFJxnFHZTDe'. Check whether the signature is genuinely theirs before we process the transfer.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/solana-signature-verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to cryptographically verify a Solana Ed25519 signature server-side without running a local Solana node or library. It is ideal for agents that need to authenticate Solana wallet ownership, validate signed challenges, or confirm data integrity in a pay-per-call, infrastructure-free way. Prefer it over EVM-specific signature verifiers when dealing with Solana wallets.
Side effects
- Invalid or malformed base58 public key returns an error or valid:false
- Signature string not matching expected encoding format causes a parse error
- Message/signature/public_key mismatch results in valid:false
- Missing required fields (message, signature, public_key) returns a 400 bad request
- Network or service downtime returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"address": "CGoFePajwf11M2VpQjp17p1bLGZ5BrTM2yFJxnFHZTDe",
"algorithm": "Ed25519",
"bytes_message": 15
}
}Tags
x402
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