Parameters1
filestringexample:<base64-encoded-image>default:null
Service overview
Pay $0.01 USDC to get an upload token (recommended for images over a few KB). No request body needed. Use the returned token to upload via: curl -X POST https://img402.dev/api/upload -H 'X-Upload-Token: TOKEN' -F [email protected] — The upload returns {url, id, contentType, sizeBytes, expiresAt}. Supports PNG, JPEG, GIF, WebP up to 5MB. 1-year retention.
API surface
2 crawlable routes
filestring<base64-encoded-image>nullMarketplace context
Service
OATP · tx_explainer — Fetch a Solana transaction by signature and return a human-readable explanation: programs invoked, token balance changes, fee (SOL + USD), and a one-line summary.
Service
Exa /contents endpoint
Service
Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.