We instrumented Claude Agent SDK using a tiny Rust proxy
At Laminar (https://github.com/lmnr-ai/lmnr) we're building open source AI observability platform in Rust. We obsess over instrumentation DX for our Python and TS SDKs and in this new blog we outline how we made the most seamless way of instrumenting recently released claude agent sdk
We instrumented Claude Agent SDK using a tiny Rust proxy launched on December 4, 2025 with 6 votes, #1,714 of 11,628 launches that month and more than 75% of that year's launches.
What it does
How we instrumented Claude Agent SDK using a tiny Rust proxy - from the Laminar team
TL;DR Building an agent with Claude Agent SDK? We've released instrumentation packages for the claude-agent-sdk in both Python and TypeScript . Both use a tiny, transparent Rust proxy (shipped inside the package, not a separate server) to capture every prompt, tool call, subagent trajectory, and latency metric from the Claude Code process. No extra dependencies or infrastructure. Get started now . With Claude Agent SDK , you can build agents various agents including automated PR reviewers, self-healing CI/CD pipelines, research agents, web automations, or practically any task you can describe. Agents can spawn subagents, each with their own tools and context, creating deep execution trees.…from laminar.sh
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