---
name: solana-transfer-prep
description: Check, before building a Solana transfer of SOL or an SPL or Token-2022 token, whether it will succeed and what it costs in rent and fees.
---

# Solana transfer readiness

Use this skill before building or signing a Solana transfer of SOL or of an SPL Token or Token-2022 token. Read-only; the free routes need no authentication. Every figure is read at finalized commitment, so it can lag the tip of the chain by about 13 seconds.

| Need | MCP tool | REST |
|---|---|---|
| Will this transfer succeed, and what will it cost in rent and fees | `solana_transfer_readiness` | `GET /v1/solana/transfer-readiness` |

- Parameters: `source` and `destination` (wallet addresses), `mint` (`SOL` or a mint address) and `amount` (UI units, a decimal string).
- Send only when `ready` is `true`; every matched blocker is listed. The verdict is not a simulation of the exact transaction: priority fees and program logic are out of scope.
- Solana responses carry `meta` with `slot` (the finalized context slot of the read), `commitment` (always `finalized`), `as_of`, `age_seconds`, `cache` and `stale`.

## Payments

The pro routes currently serve free data and no payment is required; paid access via x402 is announced but not active. Details: https://api.criptonlabs.com/docs/guides/payments.md

## More

Index of all networks and skills: https://api.criptonlabs.com/skills/agent-apis/SKILL.md. Full documentation index: https://api.criptonlabs.com/docs. Machine-readable: `/openapi.json` and `/llms.txt`.