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Flashbots Bundle Sender MCP
x402
Flashbots Bundle Sender MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13).
Sends Flashbots transaction bundles to Ethereum block builders via a managed MCP endpoint, enabling MEV-protected or atomic multi-transaction submissions.
Price / call$0.25
Success—
StatusUnknown
How this service works
The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.
Output
Returns a bundle submission result from the Flashbots relay, typically including a bundle hash and confirmation of receipt by block builders. May include status on whether the bundle was accepted and any relevant block target information.
Example use cases
MEV-protected DeFi trade execution
“I need to submit my arbitrage transaction bundle to Flashbots so it executes atomically in a single block without being frontrun — here's the signed bundle data, please relay it now.”
Atomic multi-step on-chain operation
“I have three signed Ethereum transactions that need to execute atomically or not at all — can you send them as a Flashbots bundle to block builders to guarantee they land in the same block?”
Sandwich attack prevention for large swap
“I'm about to do a large token swap and I want to avoid sandwich bots — please send my signed swap transaction as a Flashbots private bundle so it bypasses the public mempool entirely.”
Technical details
Endpoint
POSThttps://api.m2mcent.com/flashbots-bundle-sender-mcp/api/processWhen to prefer
Choose this endpoint when you need to submit Ethereum transactions privately to Flashbots block builders — especially for MEV strategies, sandwich attack protection, atomic multi-transaction execution, or any scenario where bypassing the public mempool is critical. Prefer this over raw RPC endpoints when you want managed Flashbots relay access without setting up your own infrastructure.
Side effects
- Invalid or malformed signed transaction data in the bundle payload
- Bundle rejected by Flashbots relay due to simulation failure or insufficient miner tip
- Bundle not included in target block if it becomes unprofitable
- Payment failure for the $0.25 USDC per call fee
- Network timeout or relay unavailability
- Bundle already expired if targeting a past block number
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| payload | string |
Output
Schema · Response
{
"type": "json",
"example": {
"success": true
}
}Tags
x402
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