fix(langchain/createAgent): various code updates after HITL changes #673
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christian-bromann
requested review from
lnhsingh and
katmayb
as code owners
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Pull Request Overview
This PR updates the createAgent API in documentation to align with recent HITL (Human-in-the-Loop) changes. The changes standardize import paths, parameter names, and configuration options across Python and JavaScript examples.
- Updates import paths to import middleware from the root "langchain" package instead of "langchain/middleware"
- Changes
tool_configsparameter tointerrupt_onin Python andtoolConfigstointerruptOnin JavaScript - Standardizes the use of
systemPromptparameter in JavaScript examples
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| src/oss/langchain/middleware.mdx | Updates middleware import paths, parameter names (tool_configs → interrupt_on, toolConfigs → interruptOn), and systemPrompt usage across multiple code examples |
| src/oss/langchain/agents.mdx | Updates middleware import path to use root "langchain" package |
| HumanInTheLoopRequest, | ||
| humanInTheLoopMiddleware, | ||
| } from "langchain"; | ||
| import { createAgent } from "langchain"; |
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The createAgent import is duplicated. It's already imported on line 596-601 in the same import block. Remove this duplicate import statement.
| import { createAgent } from "langchain"; |
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| const result = await agent.invoke( | ||
| { | ||
| messages: [ | ||
| new HumanMessage( | ||
| "Write to greeting.txt with the content 'Hello, world!'" | ||
| ), | ||
| ], | ||
| }, | ||
| config | ||
| ); |
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The new keyword is missing when creating the HumanMessage instance. This is inconsistent with other examples in the file and will cause a runtime error.
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|
Preview ID generated: preview-cbagen-1759026889-ddde1c1 |
|
Preview ID generated: preview-cbagen-1759028230-c924c95 |
| middleware=[ | ||
| HumanInTheLoopMiddleware( | ||
| tool_configs={ | ||
| interrupt_on={ |
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I have a different PR for HIL
Various code updates after last week:
interrupt_oninstead oftool_configssystemPrompteverywhere in JScc @sydney-runkle @eyurtsev