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Solana Rent-Exempt Lamport Calculator
x402
Solana Rent-Exempt Lamport Calculator is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Calculates the minimum number of lamports required to make a Solana account rent-exempt given its data size in bytes
Price / call$0.002
Success—
StatusUnknown
How this service works
Lamports needed to make a Solana account rent-exempt — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok: true, the type 'solana-rent-exempt', the calculated lamport amount needed for rent exemption for the given byte size, plus a payment receipt containing a transaction hash, USD amount charged, and a receipt ID.
Example use cases
Initializing a new token account
“I'm creating a new SPL token account on Solana which has 165 bytes of data — how many lamports do I need to fund it with so it's rent-exempt?”
Deploying a small on-chain program buffer
“Before I deploy my Solana program, I need to allocate a buffer account of 512 bytes. What's the minimum lamport balance I need to put in so it won't get swept by rent?”
Setting up a custom PDA with 1024 bytes
“I'm writing a Solana smart contract that uses a PDA with 1024 bytes of storage. Can you tell me how many lamports I need to store in it to keep it rent-exempt?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/solana-rent-exempt?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a reliable, on-demand calculation of the Solana rent-exempt minimum for a specific account size without running a Solana node yourself. Ideal for agents automating account creation, funding workflows, or smart contract deployment pipelines where knowing the exact lamport threshold is required before issuing a transfer.
Side effects
- Invalid or negative bytes value returns a validation error
- Missing params object or bytes field may return a 400 bad request
- Payment failure via x402 protocol returns a 402 response
- Network or provider unavailability returns a 503 or timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "solana-rent-exempt",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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