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RugShield Solana Tx Guard
x402
RugShield Solana Tx Guard is a paid API for AI agents from rugshield-x402.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).
Simulates an unsigned Solana transaction on mainnet and returns ALLOW, WARN, or BLOCK with exact balance changes and attack reason flags before the user signs
Price / call$0.01
Success—
StatusUnknown
How this service works
Solana transaction safety check before signing (pre-sign guard, wallet drainer detection). Send the unsigned tx as base64; we simulate it on mainnet and return ALLOW, WARN or BLOCK with exact SOL and token balance changes and why: owner reassigned, unlimited approval, account closed to a third party, Token-2022 permanent delegate, SOL outflow above intent, swap output redirected. Solana only. 1,132 mainnet cases: 100% of attacks blocked, 0.13% false blocks, p95 1.0 s.
Output
A JSON response containing a verdict field of ALLOW, WARN, or BLOCK, exact SOL and token balance changes for all affected accounts, and one or more reason flags from: owner reassigned, unlimited approval, account closed to third party, Token-2022 permanent delegate, SOL outflow above intent, swap output redirected. The simulation runs on Solana mainnet and completes at p95 in 1.0 second.
Example use cases
Wallet drainer detection before swap
“I got a link to approve a swap on a new Solana DEX — before I sign anything, can you simulate this unsigned transaction and tell me if it's trying to drain my wallet or redirect my swap output? Here's the base64 tx and my wallet address.”
DeFi agent pre-sign guard
“My trading bot is about to sign a Solana transaction to provide liquidity — run it through RugShield's tx guard first and block it if it reassigns account ownership or sets an unlimited token approval. Here's the base64 unsigned tx.”
Token-2022 permanent delegate check
“Someone sent me a Solana transaction to sign for a Token-2022 token airdrop — can you simulate it and flag whether it has a permanent delegate or is closing any of my accounts to a third party before I approve it?”
Technical details
Endpoint
POSThttps://rugshield-x402.fly.dev/v1/tx-guard?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a pre-signature safety check specifically for Solana transactions — particularly for DeFi interactions, airdrops, NFT mints, or any unsigned tx from an untrusted source. It is purpose-built for Solana (not EVM chains) and provides simulation-based verdict rather than heuristic-only analysis. Prefer it over generic blockchain risk APIs when you need exact balance-change deltas and specific attack-type attribution with a sub-second response time.
Side effects
- Invalid or malformed base64 transaction returns a parse error
- Transaction simulation fails if the network is congested or RPC is unavailable
- Signer wallet not found in the transaction accounts may cause a validation error
- Expired or already-processed transaction may fail to simulate
- Edge-case attack patterns outside the 1,132 training cases may produce false positives (0.13% rate) or rare false negatives
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| intent | object | optional: max_sol_out, expected_mints_in, allowed_recipients |
| signer | string | wallet that will sign; defaults to the fee payer |
| transaction | string | unsigned Solana transaction, base64 |
Tags
x402
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