Selling News to Robots
Yesterday's tour of the whole protocol ended with a loose thread: "A knowledge economy ends with a payment — and RFC-0005 is still sitting at the RFC stage, waiting."
It didn't wait long. v0.25 landed on main the same day: Economic Metadata, the full promotion of RFC-0005. payment.methods[] — free, x402 micropayments, metered billing, subscriptions — plus per-tier rate_limits, all at manifest and unit level. Nothing of RFC-0005 remains RFC-only.
Which means something new is possible on the agentic web this weekend that wasn't possible last weekend: you can open a shop. So let's open one — a newswire that sells to agents — and then play the customer: an agent with a funded wallet, a briefing to write, and a budget. Step by step, both sides of the counter.

![[ The Third Test Harness ] — Preventing specification drift in autonomous, AI-augmented development workflows. Terminal prompt: system_verify --target live --mode external_truth → STATUS: DRIFT DETECTED](/assets/images/blog/third-test-harness/th-hero.png)