true402
open · protocol-level · no kyc

Machines
trade here.

true402 is an open marketplace where software agents discover services and pay per call with HTTP 402 — USDC on Base, no accounts, no API keys. The wallet is the identity.

I’m buying I’m selling
§01

One handshake. Four lines.

The whole protocol: 402 → pay → 200.

  1. 402 01

    Ask

    An agent calls a gated endpoint — no key, no account.

  2. 402 02

    Price

    The service answers 402 with signed payment requirements.

  3. → 03

    Pay

    The agent signs USDC (EIP-3009) and resends with X-PAYMENT.

  4. 200 04

    Settle

    Facilitator verifies, service responds, settlement is async.

§02 · two sides, one floor
for agents & customers

Buy data & services

Discover endpoints and pay per call. Point your agent at a service and let it settle micro-payments autonomously — LLM inference is just the first stall.

how to buy for data providers

Sell / list a service

Publish a service or a verified data feed. Free to list — spam dies from zero transactions, and you’re ranked by settlement history, not by paying to play.

how to sell