PII Masking for Claude API Lives or Dies on the Ledger — Restore, Encrypt, Measure
The hard part of masking PII before Claude API isn't detection — it's operating the token ledger you restore from. Encrypted storage, multi-instance sharing, and a daily leak-rate loop, with working code.
Centralizing the anthropic-beta Header So a Retired Beta Won't Kill Your Batch
Scattered anthropic-beta headers turn a beta retirement or GA graduation into a 400 that takes down an entire batch. A small capability registry, a startup preflight, and tiered fallback keep your pipeline running across feature generations.
When a Long-Running Agent's Context Quietly Decays — Budgeting and Compaction
An agent that runs all night gets sloppier by morning. The cause is dilution from accumulated context. Here is how to treat context as a budget, measure its decay, and keep it healthy with compaction — with working code and field notes.
When a Model Disappears Without Warning: A State Machine for Retirement, Withdrawal, and Overload
A model can become unusable in hours for reasons that have nothing to do with a technical outage. This guide models three distinct flavors of 'unavailable'—retirement, withdrawal, and transient overload—as one availability state machine, with a router that keeps automated pipelines running. Working TypeScript and Python included.
Before Per-PR CI Burns Through Your Monthly Credits: A Three-Layer Guard for Claude Code GitHub Actions
From June 15, Claude Code GitHub Actions bills against non-rolling monthly credits. Run a review on every PR and you can drain the month in the first week. Here is a three-layer guard — when to run, how heavy one run can get, and making spend visible — with working workflows.
Making Claude Agent SDK Tools Idempotent — Stopping Double Execution with Deterministic Keys and an Outbox
An implementation log for stopping a Claude Agent SDK retry or session resume from processing the same payment twice. Three patterns — deterministic idempotency keys, an outbox, and a lightweight wrapper — with runnable code and production metrics.
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.
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.
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.
Claude API Python Advanced Cookbook: 20 Production Patterns You'll Actually Use
20 battle-tested Python patterns for the Claude API—retry logic, parallel processing, cost optimization, testing, and monitoring. Copy-paste ready code recipes.
An Anti-Corruption Layer for Claude API Models — Keeping Generation Changes Out of Your Business Logic
Hard-coding model strings into business logic means production breaks quietly every time a generation is retired. Here is an anti-corruption layer that separates logical roles from physical model IDs, with working TypeScript and Python, migration costs, and the judgment calls behind it.
Isolating Poison Messages in a Claude Async Pipeline: A Dead-Letter Queue Implementation Note
How one broken input can stall an entire batch — and how to isolate these 'poison messages' with a Cloudflare Queues dead-letter queue. Covers classifying Claude API failures and safe redrive, all from production experience.