langchain-ai/langchain
The agent engineering platform.
View on GitHub →Most-wanted open issues
Ranked by 👍 reactions. 369 open issues total, checked 2026-07-17.
| Issue | 👍 | Comments | Opened |
|---|---|---|---|
The batch method from ChatModels and all the Runnables does not really support the OpenAI batch API. help wanted, openai, external | 37 | 15 | 1 yr |
[Feature Request] Native Support for MCP Code Execution (Programmatic Tool Calling) & Lazy Result Loading great-writeup, core, langchain, feature request, anthropic, openai, external | 14 | 12 | 7 mo |
Support dynamic tool addition/removal after agent creation and in middleware langchain, feature request, candidate, external | 14 | 18 | 8 mo |
Expose Deep Agent Harness as Composable LangGraph Primitives langchain, feature request, external | 11 | 13 | 3 mo |
Python 3.14 support langchain, feature request, external | 8 | 10 | 6 mo |
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