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163ef35dd1
Updated titles into a consistent format. Fixed links to the diagrams. Fixed typos. Note: The Templates menu in the navbar is now sorted by the file names. I'll try sorting the navbar menus by the page titles, not the page file names.
42 lines
1.4 KiB
Markdown
42 lines
1.4 KiB
Markdown
# Launching LangServe from a Package
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You can also launch LangServe directly from a package, without having to pull it into a project.
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This can be useful when you are developing a package and want to test it quickly.
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The downside of this is that it gives you a little less control over how the LangServe APIs are configured,
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which is why for proper projects we recommend creating a full project.
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In order to do this, first change your working directory to the package itself.
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For example, if you are currently in this `templates` module, you can go into the `pirate-speak` package with:
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```shell
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cd pirate-speak
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```
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Inside this package there is a `pyproject.toml` file.
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This file contains a `tool.langchain` section that contains information on how this package should be used.
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For example, in `pirate-speak` we see:
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```text
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[tool.langserve]
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export_module = "pirate_speak.chain"
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export_attr = "chain"
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```
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This information can be used to launch a LangServe instance automatically.
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In order to do this, first make sure the CLI is installed:
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```shell
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pip install -U langchain-cli
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```
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You can then run:
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```shell
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langchain template serve
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```
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This will spin up endpoints, documentation, and playground for this chain.
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For example, you can access the playground at [http://127.0.0.1:8000/playground/](http://127.0.0.1:8000/playground/)
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 "LangServe Playground Interface"
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