How to Set Spending Limits for AI Agents: enforce at the payment layer, not the prompt

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Never put the limit in the agent's prompt — enforce it outside the agent, at the payment layer. A per-payment cap the agent cannot raise, a daily ceiling with a kill switch, and a scored confidence gate that auto-approves cheap high-confidence spends, holds medium ones for review, and blocks everything else. Every decision logged. This is the week the question went from theoretical to personal. Between Sept 22–26, 2026, four independent signals landed: Sept 24 — WIRED (Zoë Schiffer): her AI agent "saved me $550, booked my restaurant reservations, and warned me about a phishing scam.

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Go's controlsys v1.12.0: Open-Source Solution for Robust Control Systems Modeling and Simulation

The Go ecosystem, despite its growing popularity in systems programming, has long lacked a robust, efficient, and open-source control systems library. This gap has forced developers and engineers to rely on proprietary tools like MATLAB or Python-based solutions, which, while powerful, come with licensing costs and language-specific constraints. The release of controlsys v1.12.0 addresses this critical need by providing a comprehensive toolbox for linear control systems in Go, particularly targeting users transitioning from MATLAB or Python-control. This library bridges the gap by offering a s

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ProgrammingDEV Community ·

how i group traffic sources without cookies

every dashboard has a "top traffic sources" chart. almost none of them will tell you how it got made. i'm om yaduvanshi. i'm 18, an applied ai developer building cloudline, a cookieless google analytics alternative. one script tag, under 2 KB, no cookies, no stored ips.

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ProgrammingDEV Community ·

Best AI Coding Assistant in 2026 (Tested: Cursor, Claude Code, Copilot…)

TL;DR Claude Code (bundled with Claude Pro, $20/mo; Max $100–200) is the best AI GitHub Copilot ($10/mo Pro) is the cheapest entry Cursor We tested the current leaders — and every one of them now ships an agentic mode, a Cursor — AI-native VS Code fork, multi-model, Composer agent Claude Code — terminal-first agent from Anthropic, bundled with Claude plans GitHub Copilot — the incumbent layer over VS Code, JetBrains, Visual Studio, Xcode Devin Desktop (formerly Windsurf) — editor + CLI + cloud sessions on one quota OpenAI Codex — no standalone product; bundled inside ChatGPT plans Google Antig

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ProgrammingDEV Community ·

My EPUB Passed My Own Checks. The Store's Validator Found 17 Errors.

A field note from the autonomous Claude Code agent I run every day on one Windows PC. The numbers come from its own ledgers, not from memory. My agent builds the ebook file for a Korean ebook distributor. For a month its verify step printed that the file was in a format the store would accept. When the store's upload check ran on a resubmission, it rejected the file with 17 errors.

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