# Search1API Documentation

> Search1API is web access infrastructure for AI agents. Use this index to discover the product overview, pricing, docs, agent interfaces, and machine-readable API specs.

## Product
- [Homepage](https://s1.dev/): Product overview for Search1API.
- [Homepage Markdown](https://s1.dev/index.md): Agent-friendly overview of the product, interfaces, and endpoints.
- [About Search1API](https://s1.dev/about): Product purpose, operator identity, and trust evidence.
- [Contact Search1API](https://s1.dev/contact): Official private support channels and safe diagnostic guidance.
- [Search1API Privacy](https://s1.dev/privacy): Readable privacy summary with a link to the controlling policy.
- [Proxies](https://s1.dev/proxies): Compare fixed Static ISP proxies with rotating residential proxies for automation, account access, scraping, and regional testing.
- [Pricing](https://s1.dev/pricing): Pricing page for the core APIs and agent interfaces.
- [Pricing Markdown](https://s1.dev/pricing.md): Agent-friendly pricing, credits, and endpoint summary.
- [Proxies Markdown](https://s1.dev/proxies.md): Agent-friendly proxy plans, IP tenancy, bandwidth, and pricing.

## Documentation
- [API Docs](https://s1.dev/docs): Public documentation entry point for the Search1API platform.
- [Search1API OpenAPI and llms.txt](https://s1.dev/docs/integrations/openapi): OpenAPI schema, code-generation guidance, and agent-readable indexes.
- [Search1API MCP server guide](https://s1.dev/docs/integrations/mcp): Hosted Streamable HTTP endpoint, tool list, authentication, and client configuration.
- [Search1API CLI guide](https://s1.dev/docs/integrations/cli): Installation, OAuth login, commands, flags, and JSON output for the official `s1` CLI.
- [Official SDKs](https://s1.dev/docs/integrations/sdks): TypeScript and Python clients with typed responses, errors, retries, and deepcrawl polling.
- [Search1API Agent Skill](https://s1.dev/docs/integrations/skills): Install and use the reusable Search1API skill in supported agent hosts.

## Core APIs
- [Search1API Overview](https://blog.s1.dev/posts/search-api): Overview of the Search1API API families and common use cases.
- [Changelog](https://blog.s1.dev/changelog): Product and API updates.

## Agent Interfaces
- [Authentication for Agents](https://s1.dev/auth.md): OAuth 2.1 discovery, PKCE authorization, dynamic client registration, token refresh, and legacy API-key compatibility.
- [MCP Endpoint](https://mcp.search1api.com/mcp): Remote MCP entry point for Search1API.
- [Search1API CLI on npm](https://www.npmjs.com/package/search1api-cli): Official `s1` command-line interface for Search1API.
- [Search1API CLI source](https://github.com/superagents-lab/search1api-cli): Source code, releases, and issues for the official CLI.
- [Search1API Skills](https://github.com/superagents-lab/search1api-cli/tree/master/skills/search1api): Canonical reusable skills for agent environments.

## Machine-readable Specs
- [OpenAPI Specification](https://api.search1api.com/openapi.json): Public API schema for Search1API.
- [REST API Index](https://s1.dev/api/llms.txt): Section-scoped index for agents that only need the HTTP API.
- [Agentic Resource Catalog](https://s1.dev/.well-known/ai-catalog.json): ARD catalog of the MCP server, API schema, skill, and plugin manifest.
- [MCP Server Card](https://s1.dev/.well-known/mcp/server-card.json): Pre-connection description of the hosted MCP server and its tools.