LitWit — The Literary Witness
A notary for the written word. Submit a manuscript's SHA-256 — we never see the work — and get a tamper-evident, hash-chained receipt anchored via DNS. Free: /witness/verify and /witness/log.
x402 verified · $0.05 USDC/request · 5 endpoints / 2 tools · Verification · base network · x402 protocol
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpHow to call this API
Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.
By Penny Press