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33 lines
634 B
Markdown
33 lines
634 B
Markdown
[**@langchain/langgraph-sdk**](../README.md)
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***
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[@langchain/langgraph-sdk](../README.md) / getApiKey
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# Function: getApiKey()
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> **getApiKey**(`apiKey`?): `undefined` \| `string`
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Defined in: [client.ts:122](https://github.com/langchain-ai/langgraph/blob/a7ea5e44ce12e3618d1a766587163afbfe424e04/libs/sdk-js/src/client.ts#L122)
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Get the API key from the environment.
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Precedence:
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1. explicit argument
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2. LANGGRAPH_API_KEY
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3. LANGSMITH_API_KEY
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4. LANGCHAIN_API_KEY
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## Parameters
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### apiKey?
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`string`
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Optional API key provided as an argument
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## Returns
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`undefined` \| `string`
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The API key if found, otherwise undefined
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