◉CLAUDE LABJP
●2.1.310 — Monitor tool now works on Bedrock, Vertex and Foundry, and gateway failures are fixed (10/23)●2.1.307 — Fixes MCP failing to reconnect after sleep or a keychain lock (10/21). 2.1.306 also fixed the false claude -p login message●SONNET 4.5 — Retires on the Claude API on 11/30, 36 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●API — In API version 2026-10-21, passing temperature, top_p or top_k returns a 400 error●NEW — I Put a Ten-Line Promise File at the To…●2.1.310 — Monitor tool now works on Bedrock, Vertex and Foundry, and gateway failures are fixed (10/23)●2.1.307 — Fixes MCP failing to reconnect after sleep or a keychain lock (10/21). 2.1.306 also fixed the false claude -p login message●SONNET 4.5 — Retires on the Claude API on 11/30, 36 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●API — In API version 2026-10-21, passing temperature, top_p or top_k returns a 400 error●NEW — I Put a Ten-Line Promise File at the To…
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OpenTelemetry

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⟐ Claude Code/2026-04-29Advanced

Observability for Claude Code with OpenTelemetry — A Production-Grade Tracing Guide for Agentic Workflows

Trace Claude Code agent runs end to end with OpenTelemetry. Hook integration, per-tool spans, MCP propagation, cost attribution, and sampling patterns that survive thousands of runs per day.

⟐ Claude Code/2026-07-15Advanced

Choosing Dynamic Workflow Size and Effort From a Ledger, Not a Hunch

Dynamic Workflows went generally available, handing you the workflow size and effort dials. After a week of picking large and watching only the bill grow, here is how to turn Claude Code's OpenTelemetry console output into a ledger and assign size and effort per task type.

⬡ API & SDK/2026-05-29Advanced

Rewiring Claude API Observability with OpenTelemetry GenAI Conventions — A Design Memo for Model Migrations and Cost Audits

An implementation memo for rewiring production observability around Claude API to match the OpenTelemetry GenAI semantic conventions — span attributes, metrics, cost tracking, and model-migration replay — written from running this in indie services for six months.

⬡ API & SDK/2026-03-27Advanced

Building AI Application Observability with Claude API and OpenTelemetry

Learn how to integrate OpenTelemetry with your Claude API applications for unified tracing, metrics, and logging. Covers token usage visualization, latency monitoring, cost alerting, and distributed tracing for agent workflows.