MarketsRetool Survey: 35% Enterprises Already Replaced SaaS with Custom AI SoftwareRetool Blog·high signalXBlueskyLinkedInCopy link817 customers surveyed. 35% replaced at least one SaaS tool. 78% expect to build more. Top targets: workflows 35%, admin tools 33%, BI 29%, CRM 25%.SourceSource pageRetool Blog↳ Follow the threadStack layer / Threat patternCROSS-CATEGORY: The Guardrail Layer Around Coding Agents Shipped at Four Different Points in the Lifecycle in 48 HoursHacker News Show HN and Product Hunt (2026-08-24 and 2026-08-25)Policy dependency / Stack layerCherry Studio v2.0.9 unifies tool approval into one declarative policy and lets the provider catalog hot-update without an app releaseGitHubPolicy dependency / Stack layerA vision paper separates access from control and argues AI concentrates software power rather than democratizing itarXiv 2608.24720 (submitted 2026-08-25)Policy dependency / Stack layerMCP-Universe RL trains tool-use agents by using MCP servers as the RL environment interfacearXivStack layer / Threat patternUnlose Takes Windows VSS Snapshots Before Coding Agents Run, Rejecting the Command-Blocking ApproachGitHub (via Show HN, 2026-08-25)Stack layer / ContrastMicrosoft's Agent Lightning v1.0.1 ships an agent skill whose job is optimizing other agents, installed through gh skillGitHubPolicy dependency / Stack layerSMITH Trains Tool Creation and Tool Use in One Policy; a 4B Qwen3 Beats an Untrained 30B Tool-Writer at 79.8 Macro AccuracyarXiv 2608.24571Stack layer / ContrastGradient open-sources a full reinforcement-learning loop for training tool-using research agents with GRPOGitHub