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●2.1.269 — A broad release with 98 CLI changes. The one worth your attention is claude plugin eval, which finally lets you measure whether a plugin earns its place●EVAL — Every case runs three times with the plugin loaded and three times without, so the number you get back is the difference the plugin makes, not just a pass or a fail●GRADER — Three kinds of grader are available: a regex over the reply, a check for whether a particular tool was called, and a rubric judged by a second model●DIFF — The Bash tool result now includes a diff of the files a command changed. Turn it on with bashEditDiffEnabled●STYLE — /output-style [name] lists and switches output styles, including over Remote Control and in cloud or headless sessions●OTEL — OTEL_METRICS_INCLUDE_REPOSITORY tags metrics and events with vcs. repository attributes, and commit events carry vcs.ref.head●2.1.269 — A broad release with 98 CLI changes. The one worth your attention is claude plugin eval, which finally lets you measure whether a plugin earns its place●EVAL — Every case runs three times with the plugin loaded and three times without, so the number you get back is the difference the plugin makes, not just a pass or a fail●GRADER — Three kinds of grader are available: a regex over the reply, a check for whether a particular tool was called, and a rubric judged by a second model●DIFF — The Bash tool result now includes a diff of the files a command changed. Turn it on with bashEditDiffEnabled●STYLE — /output-style [name] lists and switches output styles, including over Remote Control and in cloud or headless sessions●OTEL — OTEL_METRICS_INCLUDE_REPOSITORY tags metrics and events with vcs. repository attributes, and commit events carry vcs.ref.head
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Context Management

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Claude API2Agent SDK1MCP1Token Optimization1chat implementation1indie development1production issues1streaming1session management1cost optimization1Claude Code1long sessions1
⬡ API & SDK/2026-06-30Advanced

When a Tool Result Is Too Big and Melts Your Context Window: Designing Cursor-Based Pagination

When a list tool returns hundreds of rows at once, an agent's context can collapse in a single call. Here is a cursor-based pagination design that keeps tool output small and protects your token budget, with working code.

⬡ API & SDK/2026-05-14Advanced

6 Traps I Hit Building In-App AI Chat with Claude API — A Record of Getting to Production

Six real design mistakes I encountered shipping Claude API in-app chat to production — covering context management, streaming error detection, guardrails, session persistence, model versioning, and cost monitoring. Includes working TypeScript code.

⟐ Claude Code/2026-04-21Advanced

Keeping Claude Code Accurate Through Long Sessions: Signals of Context Decay and What to Do About Them

After a few hours in the same Claude Code session, output quality can quietly slip. This is a practical field guide to spotting the early signals, choosing where to end a session, and keeping a long workflow reliable.