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Documentation Index

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Wallets and decentralized exchanges sit at the centre of the user experience in Web3. Every transaction a user submits passes through your infrastructure, which means the quality of that infrastructure directly shapes whether users feel safe, how quickly their trades confirm, and whether they return. BlockRazor gives wallet providers and DEX platforms two purpose-built services — RPC mode with built-in MEV protection and a Gas Sponsor layer — that let you ship a materially better experience without re-architecting your stack.

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Why wallets and DEXs choose BlockRazor

MEV Protection via RPC

Drop-in replacement for eth_sendRawTransaction. Transactions are routed through BlockRazor’s protected relay so they land on-chain without being front-run or sandwiched.

Gas Sponsor

Cover gas fees on behalf of your users. New users who have never held native tokens can execute their very first transaction the moment they connect a wallet.

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Core benefits

1

MEV protection out of the box

Integrating the BlockRazor RPC endpoint replaces your existing eth_sendRawTransaction call with an MEV-protected equivalent. Pending transactions are kept private from block builders and validators until inclusion, eliminating the window in which searchers can extract value at your users’ expense.
2

Rebates on successful transactions

BlockRazor’s RPC mode participates in an orderflow auction. When your transactions are included, a portion of the captured MEV value is returned to you as a rebate — creating a direct revenue stream from the transaction flow you already generate.
3

Gasless onboarding with Gas Sponsor

Remove the single biggest friction point in Web3 onboarding. With Gas Sponsor, your platform pays the native gas fee on behalf of the user, meaning a brand-new wallet holder can swap, bridge, or interact with a contract the moment they arrive — no bridging ETH or BNB first.

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Chain support

The table below shows which BlockRazor services are available per chain for wallet and DEX integrations.
ChainRPC (MEV Protection)Gas Sponsor
BSC✓✓
Ethereum✓✓
Base✓—
Solana—✓
Gas Sponsor is not available on Base. The table above reflects the full service coverage for wallet and DEX integrations across each supported chain.

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Integration overview

Replace your existing JSON-RPC endpoint with the BlockRazor protected endpoint. The method signature is identical to the standard — no changes to your transaction-building logic are required.
# Standard submission — just swap the endpoint URL
curl -X POST https://rpc.blockrazor.io/<chain>/<api-key> \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": ["0x<signed_tx_hex>"],
    "id": 1
  }'
If you operate on both BSC and Ethereum, a single BlockRazor account covers both chains. You can manage API keys and monitor rebate payouts from one dashboard.

RPC Submission

Standard eth_sendRawTransaction with MEV protection and rebates. Available on BSC, Ethereum, and Base.

Gas Sponsor

Sponsor native gas fees for your users. Available on BSC, Ethereum, and Solana.

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