ONE Engine x402 REST
Generate a SHA-256 cryptographic hash from UTF-8 text
0.0009 USDC per call
per call
Decode
55 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Base64 x402 REST
Base64 encode or decode text in one GET, with URL-safe output and the byte counts. Returns result, action, bytes, result_chars and sha256. Decoding accepts standard and URL-safe alphabets with or without padding and retu...
0.001 USDC per call
per call
base64-encode-decode x402 REST
Base64 encode/decode with auto-detection: valid base64 input is decoded (UTF-8), anything else is encoded; force with 'encode:' or 'decode:'. Also returns URL-safe base64 and hex. $0.01 per call.
0.01 USDC per call
per call
onchain-tx-explain x402 REST
Plain-language explanation of an EVM transaction by hash across 12 networks: net token movements per participant (ERC-20, ERC-721, ERC-1155, native, WETH), the operation type (swap, transfer, approve, mint, deploy, wrap,...
0.012 USDC per call
per call
crypto-abi x402 REST
ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.
0.003 USDC per call
per call
evm-event-logs x402 REST
Read a contract's recent event logs on an EVM network over a bounded block window and decode them. Logs are decoded from an event signature you supply, or from the contract's verified ABI, or by resolving the topic to a...
0.01 USDC per call
per call
evm-decode-signature x402 REST
Reverse a 4-byte function selector, an event topic hash, or raw calldata into its human-readable signature using the 4byte database, with collisions resolved so the real signature (the oldest registered) is returned firs...
0.003 USDC per call
per call