# API documentation

> OpenAPI documentation for Onlinesim products.

## Full documentation (English)

Complete Markdown export per API (parameters, schemas, examples).

- [Onlinesim API](https://onlinesim.io/llms-full-onlinesim-api-un.txt): Full Onlinesim API reference (16 pages)
- [Reseller API](https://onlinesim.io/llms-full-reseller-api-un.txt): Full Reseller API reference (29 pages)
- [Alternative API](https://onlinesim.io/llms-full-alternative-api-un.txt): Full Alternative API reference (14 pages)

## Onlinesim API (Onlinesim-API-UN)

Overview, auth, components, and custom guides.

- [Onlinesim API](https://onlinesim.io/openapi_docs/Onlinesim-API-UN/info/): Onlinesim API
- [Authorization](https://onlinesim.io/openapi_docs/Onlinesim-API-UN/auth/): Authorization
- [Components](https://onlinesim.io/openapi_docs/Onlinesim-API-UN/components/): Components

## Reseller API (Reseller-API-UN)

Overview, auth, components, and custom guides.

- [Reseller API](https://onlinesim.io/openapi_docs/Reseller-API-UN/info/): Reseller API
- [Authorization](https://onlinesim.io/openapi_docs/Reseller-API-UN/auth/): Authorization
- [Components](https://onlinesim.io/openapi_docs/Reseller-API-UN/components/): Components
- [Countries](https://onlinesim.io/openapi_docs/Reseller-API-UN/custom/countries/): Countries
- [Operators](https://onlinesim.io/openapi_docs/Reseller-API-UN/custom/operators/): Operators
- [Services](https://onlinesim.io/openapi_docs/Reseller-API-UN/custom/services/): Services
- [Testing](https://onlinesim.io/openapi_docs/Reseller-API-UN/custom/testing/): Testing

## Alternative API (Alternative-API-UN)

Overview, auth, components, and custom guides.

- [Alternative API](https://onlinesim.io/openapi_docs/Alternative-API-UN/info/): Alternative API
- [Authorization](https://onlinesim.io/openapi_docs/Alternative-API-UN/auth/): Authorization

## Onlinesim MCP

Local MCP CLI — install, clients, tools, and SMS workflows.

- [Onlinesim MCP (full text)](https://onlinesim.io/openapi_docs/llms-full-mcp.txt): Full Onlinesim MCP reference (8 pages)
- [Onlinesim MCP](https://onlinesim.io/openapi_docs/agent/): Local MCP CLI for Onlinesim SMS numbers — Streamable HTTP for AI clients.
- [Install](https://onlinesim.io/openapi_docs/agent/install/): Install via Agent Skill or one-line scripts from GitHub Releases.
- [Quick start](https://onlinesim.io/openapi_docs/agent/quickstart/): Login, start MCP, connect a client.
- [Connect an MCP client](https://onlinesim.io/openapi_docs/agent/clients/): Wire Cursor, Claude, VS Code, or Codex to the local HTTP endpoint.
- [MCP tools](https://onlinesim.io/openapi_docs/agent/tools/): All tools exposed by onlinesim mcp.
- [Quick SMS workflow](https://onlinesim.io/openapi_docs/agent/workflow-sms/): Order a number, receive a code, close the order.
- [Long-term rental](https://onlinesim.io/openapi_docs/agent/workflow-rent/): Rent a number for ongoing SMS, extend or cancel later.
- [CLI & configuration](https://onlinesim.io/openapi_docs/agent/cli-config/): Terminal commands, config file, and environment variables.

## Optional

- [All APIs in one file](https://onlinesim.io/llms-full.txt): Combined full text for all specs (large)
- [Interactive docs](https://onlinesim.io/openapi_docs/): HTML documentation with Try It Out