langchain-ai/langgraph-supervisor-py

Stars: 1.7k
Forks: 257
Open beginner issues: 0
Indexed issues: 44

Dominant language: Python
License: MIT
Last GitHub push: Jul 15, 2026
Latest indexed: Sep 18, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
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Beginner friendly Everything

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44 open issues indexed

Maintenance status & LangChain v1 compatibility Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#278 · Opened May 23, 2026
Handoff tool: send a focused query string to sub-agent instead of full message context Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

langchain-ai/langgraph-supervisor-py#265 · 1 comment · Opened Feb 1, 2026
Gemini 3 throws 400 "Thought signature is not valid" when used with create_supervisor Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

langchain-ai/langgraph-supervisor-py#263 · Opened Jan 27, 2026
langgraph-supervisor-py is not compatible with LangChain v1 – cannot add middleware Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#262 · 4 reactions · Opened Jan 19, 2026
State Updates Not Persisting Between Tools in Multi-Agent LangGraph Setup Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#255 · 2 comments · Opened Nov 16, 2025
Supervisor v0.30.0 Incompatible with LangGraph 1.0 Streaming Output Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#254 · 1 comment · 1 reaction · Opened Nov 14, 2025
When using the MCP tool under langgraph_supervisor with LangGraph API Server, there are 1. Repeat loop bug; 2. Blocking in calling the tool Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#249 · 1 comment · 1 reaction · Opened Oct 18, 2025
Error: transfer_back_to_supervisor is not a valid tool Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#241 · 4 comments · Opened Sep 15, 2025
Supervisor previous message not listing Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#240 · 1 comment · Opened Sep 8, 2025
Can the sub-agent not integrate the tools of MCP? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#238 · Opened Aug 27, 2025
Use messages mode not token by token Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#234 · 2 comments · Opened Aug 13, 2025
Cannot create supervisor using models with fallbacks Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#233 · 4 reactions · Opened Aug 8, 2025
Impossible to use built-in tools Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#231 · Opened Aug 6, 2025
Parallel agent call not working Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#230 · 1 comment · 4 reactions · Opened Aug 6, 2025
What is the correct usage of response_format Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#229 · 1 comment · 1 reaction · Opened Aug 6, 2025
how to use RunnableWithMessageHistory in multi agent supervisor Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#228 · Opened Jul 29, 2025
Documentation for "Human in the Loop" interactions Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

langchain-ai/langgraph-supervisor-py#227 · 2 comments · Opened Jul 29, 2025
Bug Report: app.astream with stream_mode['messages'] and subgraphs=False doesn't emit AIMessageChunks Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

langchain-ai/langgraph-supervisor-py#226 · 1 comment · Opened Jul 28, 2025
Custom state in Supervisor doesn't work; gives `Task supervisor with path ('__pregel_pull', 'supervisor') wrote to unknown channel is_last_step, ignoring it.` Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

langchain-ai/langgraph-supervisor-py#225 · 4 comments · 6 reactions · Opened Jul 28, 2025
Supervisor response is often empty (last AI message) while using claude-3-5-sonnet model with LangGraph Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

langchain-ai/langgraph-supervisor-py#223 · 3 comments · 1 reaction · Opened Jul 25, 2025
Parallel agent invocation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#222 · 1 reaction · Opened Jul 24, 2025
TypeError while initializing langgraph_supervisor 0.0.28 Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

langchain-ai/langgraph-supervisor-py#220 · Opened Jul 23, 2025
not have human in loop ? Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

langchain-ai/langgraph-supervisor-py#215 · 1 reaction · Opened Jul 21, 2025
langgraph_supervisor with checkpointers is throwing ValidationException while using Bedrock Models Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#214 · 1 comment · Opened Jul 19, 2025
create_supervisor not working with RunnableWithFallbacks and option include_agent_name Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

langchain-ai/langgraph-supervisor-py#212 · 1 comment · Opened Jul 17, 2025
How to pass the query to sub-agents directly Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#210 · 4 comments · Opened Jul 14, 2025
How to prevent extra response from supervisor workflow Open

Difficulty 3/5 1-2 days Newbie friendliness 32/100

langchain-ai/langgraph-supervisor-py#209 · 3 comments · Opened Jul 14, 2025
Supervisor agent does not pass context/state to sub-agent/tool (handoff missing state, only tool_call with empty args) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#205 · 2 comments · 4 reactions · Opened Jul 11, 2025
.InvalidParameter: messages with role "tool" must be a response to a preceeding message with "tool_calls". Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#203 · 1 reaction · Opened Jul 7, 2025
Using ChatAnthropic with langgraph-supervisor sample produces empty content for final message. Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

langchain-ai/langgraph-supervisor-py#201 · 4 comments · Opened Jul 1, 2025
create_supervisor take long time to generate result Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#200 · Opened Jul 1, 2025
Possibility to not generate output on react agent in supervisor system Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#198 · 2 comments · Opened Jun 21, 2025
Supervisor not passing on images from the agent Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#196 · 2 comments · Opened Jun 19, 2025
Is it possible to stream the tool call message in a single agent? Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

langchain-ai/langgraph-supervisor-py#195 · 3 comments · Opened Jun 16, 2025
Is it possible to cache the tool results or how can we implement the cache in supervisor Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#194 · 1 comment · Opened Jun 14, 2025
`generate_structured_response` invoking model with empty message content, causing error Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#192 · Opened Jun 12, 2025
Error: 1 validation error for transfer_to_my_node \nstate\n Input should be a valid dictionary [type=dict_type, input_value=MyState(messages=[SystemM...'), input_type=MyState]) Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

langchain-ai/langgraph-supervisor-py#191 · 2 comments · 3 reactions · Opened Jun 11, 2025
Recurring `ParentCommand` error when `supervisor.compile()` or `supervisor.stream()` is used for `langgraph-supervisor` Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#179 · 12 comments · Opened May 26, 2025
AttributeError: 'dict' object has no attribute 'id' with Custom Handoff Tool and parallel_tool_calls=True in LangGraph Supervisor Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

langchain-ai/langgraph-supervisor-py#167 · 3 comments · Opened May 22, 2025
My system read my message, use the tools, make the answer but the only message that I receive is `"Transferring back to supervisor"`. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

langchain-ai/langgraph-supervisor-py#160 · 1 comment · Opened May 17, 2025
"forward_message" tool call cannot properly until ``add_handoff_back_messages`` to Fasle Open

langchain-ai/langgraph-supervisor-py#158 · 4 comments · 1 assignee · Opened May 16, 2025
langgraph-supervisor causes Gemini LLM invocation issues — "contents not specified" error Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

langchain-ai/langgraph-supervisor-py#156 · 1 comment · Opened May 9, 2025
setting add_handoff_messages=False creates looping Open

langchain-ai/langgraph-supervisor-py#152 · 5 comments · 1 assignee · Opened May 7, 2025
The inline include_agent_name is in conflict when configurable_fields is set Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 40/100

langchain-ai/langgraph-supervisor-py#146 · 4 comments · Opened May 1, 2025

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