# [SAMPLE / TEST CONTENT] ATK Magazine (EXAMPLE, NOT PUBLISHED)

> Per-article x402 v2 on Base mainnet. $0.20 per article (USDC on Base mainnet; SAMPLE / TEST CONTENT, not a published article).

- [[SAMPLE / TEST CONTENT] [EXAMPLE] SIGNAL: ResearchAgent pays writers per article with x402 v2 (upstream testnet demo)](https://atk-bazaar-linec-production.up.railway.app/articles/atk-signal-2026-10-researchagent-x402) (pay: https://atk-bazaar-linec-production.up.railway.app/bazaar/atk-magazine/articles/atk-signal-2026-10-researchagent-x402): EXAMPLE, not published. A public demo agent buys single paywalled articles inside a user budget, checks signed promises after delivery, and claws back money on-chain when a promise breaks. Price: 0.20 USDC (200000 atomic, Base mainnet).
- [[SAMPLE / TEST CONTENT] [EXAMPLE] ATK VERIFY: three numbers on the ResearchAgent project map, checked against its source](https://atk-bazaar-linec-production.up.railway.app/articles/atk-verify-2026-10-project-map-numbers) (pay: https://atk-bazaar-linec-production.up.railway.app/bazaar/atk-magazine/articles/atk-verify-2026-10-project-map-numbers): EXAMPLE, not published. We rechecked an honesty penalty, a currency-conversion example and the corpus size against code and repo history. One holds, one is off tenfold, one uses an older count. Price: 0.20 USDC (200000 atomic, Base mainnet).

## Machine interfaces

- [OpenAPI](https://atk-bazaar-linec-production.up.railway.app/openapi.json)
- [x402 resources](https://atk-bazaar-linec-production.up.railway.app/.well-known/x402)
- [MCP endpoint](https://atk-bazaar-linec-production.up.railway.app/mcp)
- [Sitemap](https://atk-bazaar-linec-production.up.railway.app/sitemap.xml)

- [Full detail for LLMs](https://atk-bazaar-linec-production.up.railway.app/llms-full.txt)