5 articles tagged
MCP Apps shipped on 26 January 2026 as the first official MCP extension. Here is how the ui:// resource, the _meta.ui.resourceUri link, the sandbox CSP and the stateless 2026-07-28 core fit together.
NPCI's OC-215 guidelines cap balance checks at 50 per day, account lists at 25, and status checks at 3 per transaction. Here is how to re-architect a UPI app around the limits: caching, webhooks over polling, AutoPay
The 2026-07-28 MCP revision removes the initialize handshake and the protocol-level session, so any instance can serve any request. The maintainers say nothing switches off on 28 July.
OpenAI shut Instant Checkout in March 2026, six months after launch, with about a dozen merchants live. Google's UCP kept expanding. Here is how UCP, ACP and AP2 actually stack up, and what to build first.
RFC 9457 is the IETF standard for machine-readable HTTP API errors, and it obsoletes RFC 7807. This guide covers the five fields, the application/problem+json media type, extension members, multiple-problem handling
