---
title: Seamless Developer Portal
description: Developer documentation for Seamless OS — the API platform for launching and running a mobile operator: orders, subscriptions, billing, payments, and telecom inventory.
---

# Seamless Developer Portal

Developer documentation for Seamless OS — the API platform for launching and running a mobile operator: orders, subscriptions, billing, payments, and telecom inventory.

## Start here

- [Get started](/api-reference/get-started.md) — Launch your mobile operator with Seamless OS — the platform that makes it playfully easy and scalable.
- [Choose your integration](/api-reference/choose-your-integration.md) — Select the Seamless OS API integration style that best fits your business model and technical ownership.
- [Platform API](/api-reference.md) — Explore our comprehensive API documentation with endpoints for billing, subscriptions, payments, and telecommunications services.

## Machine-readable surface

Append `.md` to any page URL, or request the page URL with `text/markdown` ranked above `text/html` in the `Accept` header.

- [Docs for agents](/developer-guide/docs-for-agents.md) — every machine-readable surface of this site in one page
- [llms.txt](/llms.txt) — index of every page, grouped as the sidebar groups them
- [llms-full-guides.txt](/llms-full-guides.txt) — every guide, concept, and resource page in one document
- [OpenAPI 3.1 spec](/bundled_openapi.json) — the bundled spec the whole reference is rendered from
- [API catalog](/.well-known/api-catalog) — RFC 9727 linkset pointing at the spec and the reference
- Docs MCP server at `/mcp` — streamable HTTP, no auth; tools to search these docs and fetch any page as markdown ([server card](/.well-known/mcp/server-card.json))