Notes on MCP payment awareness, the HTTP 402 flow, and rail-agnostic monetization for agentic tools. From the Neul Labs team.https://mcp-pay.neullabs.com/en-ushttps://mcp-pay.neullabs.com/blog/wallet-side-vs-server-side-metering/https://mcp-pay.neullabs.com/blog/wallet-side-vs-server-side-metering/Who counts the calls? The wallet, the MCP server, or both? A look at the tradeoffs mcp-pay's v0.1 schema makes, and why the answer ends up being 'both, but for different things'.Sat, 02 May 2026 00:00:00 GMThttps://mcp-pay.neullabs.com/blog/payment-flows-that-dont-break-llm-calls/https://mcp-pay.neullabs.com/blog/payment-flows-that-dont-break-llm-calls/Most payment flows assume a human at the other end. Agentic calls have a tighter latency budget and a smaller error tolerance. Here is what the v0.1 mcp-pay flow does to stay inside both.Sat, 18 Apr 2026 00:00:00 GMThttps://mcp-pay.neullabs.com/blog/payment-awareness-not-paywalls/https://mcp-pay.neullabs.com/blog/payment-awareness-not-paywalls/Paywalls are 1990s vocabulary for a problem agents need to solve differently. mcp-pay treats payment as metadata an agent can read at /.well-known/, not a wall it has to bounce off.Sat, 04 Apr 2026 00:00:00 GMT