Big API is a growing library of powerful utility endpoints. Call them from your own code, or let any AI agent discover and use them via the Model Context Protocol.
All endpoints accept JSON and require an X-API-Key header.
/tools/spell-checkFind misspelled words and get suggested corrections for any block of text.
/tools/markdown-to-htmlConvert Markdown to sanitized HTML. Supports tables, fenced code blocks, and more.
/tools/text-statsAnalyze any text: word count, sentence count, paragraphs, and reading time.
/tools/slugifyConvert any text into a clean, URL-safe slug. Handles unicode and special characters.
/tools/svg-iconGenerate production-ready SVG icons by name. 20+ icons, fully customizable.
Sign up for free in under 30 seconds. No credit card required.
Generate a key from your dashboard. Use it in the X-API-Key header.
Use the REST API directly, or connect an AI agent via the MCP endpoint.
Free to start. No credit card required.