Add Vercel AI Gateway model node (#3390)

Co-authored-by: Justin Ellingwood <justin.ellingwood@gmail.com>

docs/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatvercel.md

@@ -0,0 +1,76 @@
+---
+#https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4
+title: Vercel AI Gateway Chat Model node documentation
+description: Learn how to use the Vercel AI Gateway Chat Model node in n8n. Follow technical documentation to integrate Vercel AI Gateway Chat Model node into your workflows.
+contentType: [integration, reference]
+priority: high
+---
+
+# Vercel AI Gateway Chat Model node
+
+Use the Vercel AI Gateway Chat Model node to use AI Gateway chat models with conversational agents.
+
+On this page, you'll find the node parameters for the Vercel AI Gateway Chat Model node and links to more resources.
+
+/// note | Credentials
+You can find authentication information for this node [here](/integrations/builtin/credentials/vercel.md).
+///
+
+--8<-- "_snippets/integrations/builtin/cluster-nodes/sub-node-expression-resolution.md"
+
+## Node parameters
+
+### Model
+
+Select the model to use to generate the completion.
+
+n8n dynamically loads models from the AI Gateway and you'll only see the models available to your account.
+
+## Node options
+
+Use these options to further refine the node's behavior.
+
+### Frequency Penalty
+
+Use this option to control the chance of the model repeating itself. Higher values reduce the chance of the model repeating itself.
+
+### Maximum Number of Tokens
+
+Enter the maximum number of tokens used, which sets the completion length.
+
+### Response Format
+
+Choose **Text** or **JSON**. **JSON** ensures the model returns valid JSON.
+
+### Presence Penalty
+
+Use this option to control the chance of the model talking about new topics. Higher values increase the chance of the model talking about new topics.
+
+### Sampling Temperature
+
+Use this option to control the randomness of the sampling process. A higher temperature creates more diverse sampling, but increases the risk of hallucinations.
+
+### Timeout
+
+Enter the maximum request time in milliseconds.
+
+### Max Retries
+
+Enter the maximum number of times to retry a request.
+
+### Top P
+
+Use this option to set the probability the completion should use. Use a lower value to ignore less probable options. 
+
+## Templates and examples
+
+<!-- see https://www.notion.so/n8n/Pull-in-templates-for-the-integrations-pages-37c716837b804d30a33b47475f6e3780 -->
+[[ templatesWidget(page.title, 'vercel-ai-gateway-chat-model') ]]
+
+## Related resources
+
+As the Vercel AI Gateway is API-compatible with OpenAI, you can refer to [LangChains's OpenAI documentation](https://js.langchain.com/docs/integrations/chat/openai/) for more information about the service.
+
+--8<-- "_snippets/integrations/builtin/cluster-nodes/langchain-overview-link.md"
+
+--8<-- "_glossary/ai-glossary.md"

docs/integrations/builtin/credentials/vercel.md

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+---
+#https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4
+title: Vercel AI Gateway credentials
+description: Documentation for the Vercel AI Gateway credentials. Use these credentials to authenticate the Vercel AI Gateway in n8n, a workflow automation platform.
+contentType: [integration, reference]
+priority: critical
+---
+
+# Vercel AI Gateway credentials
+
+You can use these credentials to authenticate the following nodes:
+
+- [Chat Vercel AI Gateway](/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatvercel.md)
+
+## Prerequisites
+
+Create a [Vercel](https://vercel.com/) account.
+
+## Supported authentication methods
+
+- API key
+- OIDC token
+
+## Related resources
+
+Refer to the [Vercel AI Gateway documentation](https://vercel.com/docs/ai-gateway) for more information about the service.
+
+## Using API key
+
+To configure this credential, you'll need:
+
+- An **API Key**
+
+To generate your API Key:
+
+1. [Login to Vercel](https://vercel.com/login) or [create an account](https://vercel.com/signup).
+2. Go to the Vercel dashboard and select the **AI Gateway** tab.
+3. Select **API keys** on the left side bar.
+4. Select **Add key** and proceed with **Create key** from the Dialog.
+4. Copy your key and add it as the **API Key** in n8n.
+
+## Using OIDC token
+
+To configure this credential, you'll need:
+
+- An **OIDC token**
+
+To generate your OIDC token:
+
+1. In local development, link your application to a Vercel project with the `vc link` command.
+2. Run the `vercel env pull` command to pull the environment variables from Vercel.
+3. Copy your token and add it as the **OIDC TOKEN** in n8n.

nav.yml

@@ -744,6 +744,7 @@ nav:
             - OpenAI Chat Model: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatopenai/index.md
             - Common issues: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatopenai/common-issues.md
           - OpenRouter Chat Model: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatopenrouter.md
+          - Vercel AI Gateway Chat Model: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatvercel.md
           - xAI Grok Chat Model: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatxaigrok.md
           - Cohere Model: integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmcohere.md
           - Ollama Model:
@@ -1074,6 +1075,7 @@ nav:
         - integrations/builtin/credentials/urlscanio.md
         - integrations/builtin/credentials/venafitlsprotectcloud.md
         - integrations/builtin/credentials/venafitlsprotectdatacenter.md
+        - integrations/builtin/credentials/vercel.md
         - integrations/builtin/credentials/vero.md
         - integrations/builtin/credentials/virustotal.md
         - integrations/builtin/credentials/vonage.md