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Infra2026-06-20 · source-backed
Announced at Build 2026, Rayfin is an SDK and CLI that defines data models, business logic, auth, and access policies entirely in code, then deploys to Microsoft Fabric (The New Stack). The pitch is backends that are agent-authorable end to end. It pushes Microsoft's agent tooling past the IDE into deployable infrastructure, and it's the kind of code-defined surface that pairs naturally with the coding-agent harnesses everyone's hardening this week.
Each link below shares sources, entities, or timing with this story.
Microsoft criticizes Claude Code / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Microsoft criticizes Claude Code); both cover Build, CLI, IDE, SDK; reported by the same outlet (thenewstack.io).
.NET built by Microsoft / Shared entities / Shared topic / What happened next / Tension
Linked by a graph relationship (.NET built by Microsoft); both cover CLI, IDE, Microsoft, SDK; overlapping topics (agent, code).
Microsoft competes with OpenAI / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Microsoft competes with OpenAI); both cover Build, IDE, Microsoft; overlapping topics (agent, microsoft).
.NET built by Microsoft / Shared entities / Shared topic / What happened next / Tension
Linked by a graph relationship (.NET built by Microsoft); both cover IDE, Microsoft; overlapping topics (agent, code).
Microsoft released Agent Framework / Shared entities / Shared topic / What happened next
Linked by a graph relationship (Microsoft released Agent Framework); both cover Build, Microsoft; overlapping topics (access, agent, code).
Microsoft supports MCP / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Microsoft supports MCP); both cover Microsoft, SDK; overlapping topics (agent, microsoft).
Microsoft criticizes Claude Code / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Microsoft criticizes Claude Code); both cover IDE, SDK; overlapping topics (agent, code).
Linked by a graph relationship (Microsoft criticizes Claude Code); both cover CLI, IDE; overlapping topics (agent, code).