AI & Agent Dev Bug Sandbox Back to Radar

ChatOpenAI.Bind_tools() Rejects GPT-6 Shell/Programmatic Tools And Lacks Responses Round-Trip Support

langchain-openai 1.6.4 rejects shell, programmatic_tool_calling, and local_shell tool types in bind_tools, and the Responses API conversion layer does not handle shell_call, shell_call_output, local_shell_call, local_shell_call_output, program, program_output items, nor preserves allowed_callers and caller fields, breaking GPT-6 programmatic tool calling end-to-end.

highConfidence 85%Langchain-Openai Affected Vlangchain-Openai<=1.6.4 Affected Vlangchain-Core<=1.6.4

Origin Analysis

convert_to_openai_tool() only recognizes the 'function' tool type and raises ValueError for unknown types; the Responses API conversion layer lacks cases for new item types and drops caller/allowed_callers metadata during round-trip conversion.

Run the following Python code: from langchain_openai import ChatOpenAI model = ChatOpenAI(model='gpt-6-sol', api_key='test') tools = [{'type': 'shell', 'environment': {'type': 'container_auto'}}, {'type': 'programmatic_tool_calling'}, {'type': 'local_shell'}] for tool in tools: try: model.bind_tools([tool]) except ValueError as error: print(tool['type'], repr(error)) # Observe ValueError: Unsupported function for shell tool.

Fixing Code Block

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0xA4 1C 90 3E 77 0B D2 580x11 F6 6A 2C 80 19 DE 44
0x00 00 00 00 03 00 3E 000x01 00 B7 4D 55 90 0C 61
0x6C 69 62 63 2E 73 6F 2E0x36 00 8E 17 42 AA 05 F3
0xDE C0 DE 01 8B 45 FC 890xC7 5D 20 6F 91 03 E4 78
0x13 37 00 4F 9A 2D E1 700x08 B4 5C 22 71 D0 4A 16
0x48 8D 3D 22 01 00 00 E80x91 FF 0A 63 2E 57 B8 04
0x5A 91 C3 0E 44 70 1B 880x02 6F 39 C4 15 80 ED 27
0xFF 15 40 20 60 00 48 890xC3 90 7A 01 4C 28 B1 56
0x0F 1F 44 00 00 55 48 890xE5 C3 18 6D 92 0B 33 A7

Edge Case Audit

Monkey patching global classes is not thread-safe and may conflict with future official updates; the text-based serialization of response items loses type fidelity and may break streaming. The caller preservation is incomplete; the agent loop still needs a proper patch. Rollback: remove the monkey patch and upgrade to a fixed version when available. Concurrency: global patching can affect all threads; use with caution in multi-threaded environments.