Researched and written with 211,880 tokens (in 29 · out 20,171 · cache-read 61,331 · cache-create 130,349) across 4 Claude calls

Coding agents

• Claude Code 2.1.292から、サブエージェントのEffortを指定できるようになった👀: Claude Code 2.1.292 lets you set effort per sub-agent, so cheap work stops burning high-effort tokens.
• v2.1.292: Release adds an effort parameter on the Agent tool and claude plugin install --marketplace <source> to add a marketplace and install from it in one step.
• Claude cloud sessions field guide (RT @ClaudeDevs): Cloud sessions run Claude Code on a fresh VM per task, so you can run several in parallel and they keep going after you close your laptop.
• Claude Projects cloud session to local folder (RT @dfeinition): A cloud session can now reach an approved local folder and edit files in place, which bridges cloud agents and local repos.
• Can a Cloud-Native Harness Make Agents Reliable Beyond the Desktop?: Argues the agent loop (LLM, tools, context) outgrows laptop and desktop harnesses, and makes the case for cloud-native ones.
• Building Git infrastructure for agent-scale development: GitHub is rebuilding its Git backend live to handle agent-scale commit and clone load.
• GitHub Copilot weekly releases — September 28: Adds Claude Sonnet 5.5 in Copilot, reusable workflows and desktop app automation.
• Update your IDE to restore agent activity in Copilot usage metrics: Falling agent-activity numbers in Copilot metrics were a measurement bug, fixed by updating your IDE.
• How Jump Trading is scaling quant research with ChatGPT: Longer-running AI workflows that combine multiple data sources with human review.

Agent economics and token efficiency

• Announcing tsc-rs: Theo's agent-built Rust rewrite of tsc and the LSP cost about $20k of Opus after about $400k of Codex tokens got nowhere, and he says he read none of the code.
• Prompt of the day: /writing-for-agents: Restructure a bloated AGENTS.md with progressive disclosure, since Pocock calls it the most common source of token waste.
• How many GPUs is 1M/B/T tokens?: Calculator that turns monthly token volume into GPU counts by GPU, model and workload (agentic coding or chat).

Agent tooling and workflow

• T3 Code GitHub integration rate-limit cut: T3 Code cut GitHub rate-limit usage by over 75% by dropping the CLI for direct API calls and rotating between GraphQL and REST with fallbacks.
• Agents wrote 200+ bad "watch pr" scripts: Theo's prompt audits your agent history for re-invented PR-babysitting logic, a sign it should be one shared skill.
• Live dashboard of every Claude Code session and subagent: Read-only, hook-free view of what each Claude Code session and subagent is doing.
• Peekumi: Open source mobile interface for reviewing Claude Code work.
• Repowise: Open source codebase index for Claude Code, with new updates.

CLI/TUI

• manaflow-ai/cmux: Open source Ghostty-based macOS terminal with vertical tabs and notifications built for multitasking across AI coding agents.

Vibe-coding and repos

• morluto/rea: Agents reverse engineer app behavior down to native binaries (npx rea-agents setup).
• Bolt on-canvas feedback: Click the part you dislike and comment on it, and Bolt fixes all the comments in one pass, which tackles scattered vibe-coding feedback.
• i built a node-based audiovisual programming software from claude code: Showcase of a node-based audiovisual programming tool built with Claude Code.

Agentic SaaS

• Advancing computer use with Ironclad: OpenAI and Ironclad train and evaluate computer-use agents on complex contracting workflows.
• Figma Agent: Prompt, edit and prototype inside the Figma canvas.
• Velozity: Workspace where team members and AI agents work together.
• Databench by Alkera: Open-source collaborative agentic workspace for data teams.