◉CLAUDE LABJP
●2.1.302 — Fork subagents are now on by default in claude -p, the Agent SDK and the desktop app. Turn them off with CLAUDE_CODE_FORK_SUBAGENT=0 (10/16)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 43 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…●2.1.302 — Fork subagents are now on by default in claude -p, the Agent SDK and the desktop app. Turn them off with CLAUDE_CODE_FORK_SUBAGENT=0 (10/16)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 43 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…
ARTICLES

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All (907)◉ Claude AI (147)⟐ Claude Code (381)◈ Cowork (72)⬡ API & SDK (307)
⬡ API & SDK/2026-06-14Advanced

Record Which Model Actually Answered — Attestation Logging for Headless Pipelines

Persist the model field and usage from every API response so you can detect when the served model differs from the one you requested, and reconcile per-model cost ahead of the usage credits change.

⟐ Claude Code/2026-06-14Advanced

Pacing Non-Rollover Monthly Credits: A Burn-Rate Scheduler That Avoids Both Early Exhaustion and Wasted Balance

Non-rollover monthly credits punish you for spending too fast and for spending too slow. Here is the design of a scheduler that derives a daily burn rate from remaining balance and days left, throttles headless runs automatically, and the real numbers from running it on a personal automation setup.

⟐ Claude Code/2026-06-14Advanced

Running Claude Code Hooks as a Quality Gate Without Breaking Your Pipeline

An implementation note on running Claude Code Hooks as a safety valve for automation: when to block with exit code 2 versus JSON output, how to keep formatters from looping or over-blocking, and how to log every hook firing so misfires are traceable.

⟐ Claude Code/2026-06-14Intermediate

Measuring a Week of Headless Usage the Night Before the Billing Change

With headless Claude Code moving to monthly credits on June 15, I spent a week logging how many tokens my unattended runs actually consume, so I could pick a plan based on numbers instead of a guess.

⬡ API & SDK/2026-06-14Advanced

Wiring Claude's Dreaming Into Memory Hygiene for Long-Running Agents

Managed Agents' Dreaming reviews past sessions and rewrites memory as a self-improvement loop. We unpack the published Harvey and Wisedocs numbers, build a complete self-hosted consolidation loop with the Anthropic SDK, and cover the production pitfalls.

⬡ API & SDK/2026-06-13Advanced

Auditing pinned model IDs before claude-sonnet-4 and claude-opus-4 retire from the API

On June 15, claude-sonnet-4 and claude-opus-4 retire from the API. Here is how to find every pinned model ID before then, measure output parity, and cut over safely with an alias layer and a fallback.

⟐ Claude Code/2026-06-13Intermediate

What the June 15 Claude Code Billing Change Means for Headless Runs

From June 15, 2026, the Agent SDK, headless claude -p, GitHub Actions, and third-party agents move to monthly credits. Here's how a solo developer running automation decided what to keep and what to cut.

⟐ Claude Code/2026-06-13Advanced

Pin Your Execution Model with enforceAvailableModels — Don't Let Auto-Upgrades Burn Through Your Credits

From June 15, monthly credits become non-rolling. This is a setup-layer approach to keep subagents and fallbacks from silently upgrading to pricier models, using enforceAvailableModels to pin the model set from the managed-settings layer, with a verification step you can run in CI.

◈ Cowork/2026-06-13Intermediate

Running Cowork Scheduled Tasks in Practice — From a Morning Digest to Unattended Weekly Reports

How to set up recurring runs, reminders, and automated reports with Claude Cowork's scheduled tasks — covering cron basics, prompt design that survives unattended execution, and how to schedule multiple tasks so they stay reliable.

⟐ Claude Code/2026-06-13Advanced

Context Budgets for Nested Subagents: Designing Contracts So 5-Level Delegation Doesn't Lose Quality

Once subagents could nest, deeper delegation made summaries thinner and reruns more frequent. Here is how I rebuilt quality by adding four contracts between layers: token budgets, a handoff schema, failure isolation, and an independent grader.

⟐ Claude Code/2026-06-13Advanced

Shipping Production-Quality Go REST APIs with Claude Code — Gin, GORM, Docker, and CI/CD with the Judgment Calls That Matter

A hands-on walkthrough of building a production-quality REST API with Claude Code and Go — Clean Architecture with Gin and GORM, graceful shutdown, minimal Docker images, and GitHub Actions, with the operational judgment calls AI won't make for you.

⬡ API & SDK/2026-06-13Advanced

Claude Vision API in Production — Implementation Patterns for Image Analysis, PDF Processing, and OCR

Implementation patterns for taking Claude's vision capabilities to production: choosing between Base64, URL, and the Files API, native PDF processing, schema-enforced extraction with Tool Use, batch cost reduction, and error recovery — all with working code.