# Claude Agent SDK 36 Hacker News commenters recommended Claude Agent SDK and 25 criticized it, November 2025 to November 2026. It was recommended in 11 of 13 months. **Verdict:** Developers praise it for building agents on top of Claude Code at a predictable cost. Critics agree the main caveat is Anthropic's shifting rules on using subscriptions with it. ## Why people recommend it - Strong, capable agent framework (5 comments): "A few weeks ago the Claude Code Agent SDK was much better than the default Copilot Agent" ([source](https://news.ycombinator.com/item?id=48584344)) "I'm building a product on the Claude Agent SDK, and it is the best in a specific way." ([source](https://news.ycombinator.com/item?id=46581761)) "it's by far the most capable Agent as of today" ([source](https://news.ycombinator.com/item?id=46423973)) - Predictable cost on subscription (3 comments): "This is sweet because I can prototype all sorts of agents with Claude Code embedded inside, at a predictable monthly cost." ([source](https://news.ycombinator.com/item?id=47853462)) "I routinely use Agent SDK with my subscription and it doesn't come out of a separate budget." ([source](https://news.ycombinator.com/item?id=50280652)) "The Agent SDK can piggyback on your existing Claude Code authentication" ([source](https://news.ycombinator.com/item?id=46550224)) - Great developer experience (4 comments): "Its hard to explain how amazing the UX compared to normal coding before." ([source](https://news.ycombinator.com/item?id=49106653)) "Claude Code SDK (now called Agent SDK) is amazing" ([source](https://news.ycombinator.com/item?id=46015314)) "after claude agent SDK it feels like peanuts" ([source](https://news.ycombinator.com/item?id=46303386)) - Delegates tasks and orchestrates subagents (2 comments): "It was very useful to delegate things like create a ticket based on a discussion to Claude." ([source](https://news.ycombinator.com/item?id=48653472)) "let Claude orchestrate the subagents, the websearch and a sandbox" ([source](https://news.ycombinator.com/item?id=45804613)) ## What people warn about - Anthropic keeps changing subscription rules (11 comments): "When Anthropic changed their T&Cs to disallow using claude code oauth tokens in the Anthropic Agent SDK" ([source](https://news.ycombinator.com/item?id=47453271)) "Very frustrating action from them, especially when use of subscriptions with Agents SDK was explicitly stated to be permitted a month ago." ([source](https://news.ycombinator.com/item?id=47064226)) "I really wish Anthropic would make it clear (and allow us to use our subscriptions with other tools)." ([source](https://news.ycombinator.com/item?id=46851443)) - Heavy subprocess and MCP plumbing (4 comments): "the library right now is a library with a subprocess (claude code) and the tools also need to be served via MCP, not exactly light weight" ([source](https://news.ycombinator.com/item?id=46740737)) "Anthropic expects you to use the Agent SDK with its "in-process MCP server" if you want to register custom tools, which sounds like a huge waste of resources" ([source](https://news.ycombinator.com/item?id=47719793)) "Claude Agent SDK is poorly documented, half finished, and is just thin wrapper around a CLI tool" ([source](https://news.ycombinator.com/item?id=47071103)) - Poorly documented and missing features (3 comments): "Claude Agent SDK is poorly documented, half finished, and is just thin wrapper around a CLI tool" ([source](https://news.ycombinator.com/item?id=47071103)) "i have tried using claude agebt sdk without the claude code preset, and it is quite bad" ([source](https://news.ycombinator.com/item?id=47150234)) "the official Anthropic Agent SDK doesn't provide a way to stream json responses" ([source](https://news.ycombinator.com/item?id=46421442)) ## Alternatives hackers recommend - [LangChain](https://hackerapproved.com/p/langchain.md): 32 recommend - [Mastra](https://hackerapproved.com/p/mastra.md): 32 recommend - [LangGraph](https://hackerapproved.com/p/langgraph.md): 31 recommend - [DSPy](https://hackerapproved.com/p/dspy.md): 29 recommend - [Pydantic AI](https://hackerapproved.com/p/pydantic-ai.md): 27 recommend ## Cite as Hacker Approved, "Claude Agent SDK", https://hackerapproved.com/p/claude-agent-sdk/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).