OpenAPI to LLM Tools & Function Calling
Pricing
from $1.50 / 1,000 endpoint processeds
Convert any OpenAPI/Swagger spec into per-endpoint LLM tool definitions (function calling schemas) plus clean Markdown docs. Generates JSON-schema tools ready for OpenAI, Claude/Anthropic, and any agent framework. Paste a spec URL or inline JSON; deterministic, content-hashed output per endpoint.
You can access the OpenAPI to LLM Tools & Function Calling programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in Integrations settings in Apify Console.
$echo '{}' |<apify call awesome_highboy/openapi-llm --silent --output-datasetThe Apify CLI is the official tool that allows you to use OpenAPI to LLM Tools & Function Calling locally, providing convenience functions and automatic retries on errors.
Using installation script (macOS/Linux):
$curl -fsSL https://apify.com/install-cli.sh | bashUsing installation script (Windows):
$irm https://apify.com/install-cli.ps1 | iexUsing Homebrew:
$brew install apify-cliUsing npm:
$npm install -g apify-cliOther API clients include: