# API Reference

> [llms.txt](https://www.mintlify.com/llms.txt)

Interactive for developers. Structured for agents. Generated from the spec you already maintain, and updated every time it changes.

URL: https://www.mintlify.com/use-cases/api-reference

Docs generated directly from your OpenAPI spec. Interactive for developers. Structured for agents. Generated from the spec you already maintain, and updated every time it changes.

[Get started](https://app.mintlify.com/signup) · [Talk to sales](/contact/sales)

Trusted by Perplexity, PayPal, Replit, Amazon, Cognition, Lovable, IBM, and Anthropic.

## Your API reference has two readers now

Two-thirds of docs traffic on Mintlify is agents, and agents run 1.28M tool calls a day on average across Mintlify MCP servers. Make your API reference available to agents so your users get the information they need.

Agents make up about two-thirds of docs traffic on Mintlify; humans the remaining third. [Read the report](/blog/state-of-docs-traffic)

## The platform for your API

One platform for your entire knowledge stack. Over 20,000 teams keep their content accurate for humans and agents with Mintlify.

- A reference generated from your spec
- Self-updating, always in sync
- API playground where users can test requests and make successful calls from inside your docs.
- Built for agent consumption

## Built to scale with the agentic web

- 99.99% uptime
- 2B+ agent visitors in the past year
- 300M+ human visitors
- 20,000+ customers

## Customer stories

- [See how Anthropic accelerates AI adoption with Mintlify](/customers/anthropic) — 2M monthly active developers, 4+ products serviced
- [How Coinbase became agent-ready with Mintlify](/customers/coinbase) — +50x faster deployment time, 12+ products serviced
- [How HubSpot powers next-gen developer experience with Mintlify](/customers/hubspot) — +2x faster time to production, 60% reduction in engineering resources
- [See how AT&T modernized their knowledge infrastructure with Mintlify](/customers/att) — 50K+ monthly active users, 4+ products serviced

## Resources

Product updates, engineering deep dives, and perspectives on building the next generation of knowledge infrastructure.

- [Docs as an abstraction layer for coding agents](/blog/structured-docs-coding-agents)
- [Docs URL Benchmark: Markdown & llms.txt > HTML](/blog/llms-txt-agent-benchmark)
- [The state of docs traffic: a 2026 midyear report](/blog/state-of-docs-traffic)

[All blog posts](/blog)

## Frequently Asked Questions

### What spec formats do you support?

OpenAPI, AsyncAPI, and GraphQL in SDL. Bring the spec you already maintain.

### How does the reference stay in sync with the API?

Your endpoint pages build from your API spec, so any changes immediately flow to your docs. Set up Mintlify automations to watch for changes to source code and update your API spec as needed.

### How do agents use the reference?

Every site ships llms.txt and an MCP server, so agents query your reference directly instead of scraping it.

## The knowledge platform built for agents

[Get started](https://app.mintlify.com/signup) · [Talk to sales](/contact/sales)