Home › x402 pay-per-call APIs › EVM & Solana Utility Tools

EVM & Solana Utility Tools

Solana Program Derived Address (PDA) calculator — derive the canonical off-curve address and bump from bounded public seeds offline, without RPC or key handling.

Visit chain-tools.use.x402atlas.com

Host	chain-tools.use.x402atlas.com
Price	$0.005–$0.01 per call
Network	Base
Paid endpoints listed	7
Calls, last 30 days*	23
Most unique payers on one endpoint (30 days)*	3
Last paid call*	2026-10-15
Tags	blockchain-development, evm, merkle-proof, keccak256, solidity-abi, offline-computation, solana-pda, program-derived-address

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://chain-tools.use.x402atlas.com/solana/pda` Solana Program Derived Address (PDA) calculator — derive the canonical off-curve address and bump from bounded public…	POST	$0.005
`https://chain-tools.use.x402atlas.com/merkle/verify` Keccak Merkle proof verifier — validate inclusion plus exact leaf index and count proof shape for the Atlas…	POST	$0.005
`https://chain-tools.use.x402atlas.com/merkle/build` Keccak Merkle tree and proof builder — generate indexed sorted-pair inclusion proofs with domain separation and…	POST	$0.01
`https://chain-tools.use.x402atlas.com/evm/create2` CREATE2 deterministic contract address calculator — derive the EIP-1014 EVM deployment address, preimage, hashes, and…	POST	$0.005
`https://chain-tools.use.x402atlas.com/evm/address-checksum` EVM address checksum and validation tool — normalize one Ethereum-compatible address and validate mixed-case EIP-55…	POST	$0.005
`https://chain-tools.use.x402atlas.com/evm/abi-encode` Solidity ABI calldata encoder — encode canonical typed values for an EVM smart-contract function call, with an…	POST	$0.005
`https://chain-tools.use.x402atlas.com/evm/abi-decode` Strict Solidity ABI calldata decoder — decode canonical EVM smart-contract function calls or typed values, verify…	POST	$0.005

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

Is this your tool? Update the description or add details for free via Submit / claim. Want it at the top of x402 pay-per-call APIs? See Get listed / Advertise (paid placements are labelled Sponsored).