# Cross-link map: AI Gateway Tool Use and Function Calling (/docs/ai-gateway/inputs-and-tools/tool-use)

> From the Vercel docs graph (built 2026-10-09T15:41:22.984Z), spanning vercel.com docs + KB, nextjs.org, ai-sdk.dev, and other Vercel documentation sites. Full graph as JSON: https://vercel.com/docs/graph.json

## Semantically closest pages

- [OpenAI Chat Completions Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/openai-chat-completions/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=semantic) — Use function calling with the Chat Completions API to enable models to call tools and functions through AI Gateway.
- [OpenAI Responses Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/responses/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=semantic) — Define tools the model can call with the OpenAI Responses API through AI Gateway.
- [Anthropic Messages Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/anthropic-messages-api/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=semantic) — Use function calling with the Anthropic Messages API to allow models to call tools and functions through AI Gateway.
- [OpenResponses Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/openresponses/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=semantic) — Define tools the model can call using the OpenResponses API through AI Gateway.
- [AI SDK with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=semantic) — Build AI-powered TypeScript applications using the AI SDK with AI Gateway for unified access to 200+ models.

## Prerequisites

- [AI Gateway](https://vercel.com/docs/agent-resources/vercel-mcp/tools/ai-gateway?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=prerequisite) — Vercel MCP tools for ai gateway.

## This page links to (11)

- [Tool Calling](https://ai-sdk.dev/docs/ai-sdk-core/tools-and-tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Learn about tool calling and multi-step calls (using stopWhen) with AI SDK Core.
- [Coding Agents and Chat Platforms with AI Gateway](https://vercel.com/docs/ai-gateway/coding-agents?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Connect coding agents and chat platforms to AI Gateway. Configure Claude Code, Codex, Chatbox, Open WebUI, and more.
- [AI Gateway Web Search](https://vercel.com/docs/ai-gateway/models-and-providers/web-search?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Enable AI models to search the web and retrieve source-grounded data using built-in tools through AI Gateway.
- [AI Gateway SDKs and APIs](https://vercel.com/docs/ai-gateway/sdks-and-apis?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Connect to AI Gateway with the AI SDK, Python, REST, or compatible OpenAI, Anthropic Messages, OpenResponses, and Cohere
- [AI SDK with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Build AI-powered TypeScript applications using the AI SDK with AI Gateway for unified access to 200+ models.
- [AI SDK for Python with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk-python?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Build AI-powered Python applications using the AI SDK for Python with AI Gateway for unified access to 200+ models.
- [Anthropic Messages Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/anthropic-messages-api/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Use function calling with the Anthropic Messages API to allow models to call tools and functions through AI Gateway.
- [OpenAI Chat Completions Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/openai-chat-completions/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Use function calling with the Chat Completions API to enable models to call tools and functions through AI Gateway.
- [OpenResponses Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/openresponses/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Define tools the model can call using the OpenResponses API through AI Gateway.
- [OpenAI Responses Tool Calling with AI Gateway](https://vercel.com/docs/ai-gateway/sdks-and-apis/responses/tool-calling?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Define tools the model can call with the OpenAI Responses API through AI Gateway.
- [Vercel CLI Overview](https://vercel.com/docs/cli?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=outbound) — Learn how to use the Vercel command-line interface \\(CLI\\) to manage and configure your Vercel Projects from the command

## Pages that link here (3)

By site: vercel-kb (1) · vercel-docs (2)

### From vercel-kb

- [Private enterprise agents on Vercel](https://vercel.com/kb/guide/private-enterprise-agents-vercel?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=inbound) — Design private enterprise agents that call internal APIs and databases with Vercel Functions, Secure Compute, AI Gateway

### From vercel-docs

- [AI Gateway Inputs and Tools](https://vercel.com/docs/ai-gateway/inputs-and-tools?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=inbound) — Send images, PDFs, audio, and video to AI Gateway models, and connect models to application functions with tool use.
- [AI Gateway Text Generation](https://vercel.com/docs/ai-gateway/modalities/text-generation?from=graph&source_path=%2Fdocs%2Fai-gateway%2Finputs-and-tools%2Ftool-use&source_site=vercel-docs&relationship=inbound) — Generate and stream text from hundreds of models through AI Gateway, with tool calling and structured output.