# Felo API Platform

> One API key for model APIs and ready-made agent harness APIs. Build with Claude, DeepSeek, GPT-5.6, Grok, Search, PPT, Web Fetch, X Search, Mindmap, LiveDoc, Landing Page, YouTube subtitles, and SuperAgent workflows.

## Core Pages
- [Home](https://openapi.felo.ai/): Felo API Platform overview for model APIs, agent harness APIs, free trial access, and pricing.
- [Models](https://openapi.felo.ai/models): Browse supported Claude, DeepSeek, GPT-5.5, GPT-5.6, GPT-6, Grok, Stealth, and Z.AI model APIs with pricing and Quick Start pages.
- [Harness](https://openapi.felo.ai/harness): Explore ready-made agent capabilities including Search, PPT, Web Fetch, X Search, Mindmap, LiveDoc, YouTube subtitles, Landing Page, and SuperAgent APIs.
- [Docs](https://openapi.felo.ai/docs): Developer documentation for authentication, AI tool setup, LLM APIs, and harness APIs.
- [Pricing](https://openapi.felo.ai/pricing): Plans, free daily credits, usage credits, and subscription guidance.

## Model APIs
- [GPT-6 Astra API](https://openapi.felo.ai/models/openai/gpt-6-astra): gpt-6-astra, 1.05M context, responses protocol, OpenAI route.
- [OX Alpha API](https://openapi.felo.ai/models/stealth/ox-alpha): ox-alpha, 1M context, chat-completions protocol, Stealth route.
- [Claude Opus 4.8 API](https://openapi.felo.ai/models/anthropic/claude-opus-4-8): claude-opus-4-8, 1M context, messages protocol, Anthropic route.
- [DeepSeek V4 Flash API](https://openapi.felo.ai/models/deepseek/deepseek-v4-flash): deepseek-v4-flash, 1M context, responses protocol, DeepSeek route.
- [Grok 4.5 API](https://openapi.felo.ai/models/x-ai/grok-4.5): grok-4.5, 500K context, chat-completions protocol, xAI route.
- [GLM 5.3 Flash API](https://openapi.felo.ai/models/z-ai/glm-5.3-flash): glm-5.3-flash, 1M context, chat-completions protocol, Z.AI route.
- [GPT-5.6 Sol API](https://openapi.felo.ai/models/openai/gpt-5.6-sol): gpt-5.6-sol, 1.05M context, responses protocol, OpenAI route.
- [Claude Sonnet 5 API](https://openapi.felo.ai/models/anthropic/claude-sonnet-5): claude-sonnet-5, 1M context, messages protocol, Anthropic route.
- [GPT-5.5 Pro API](https://openapi.felo.ai/models/openai/gpt-5.5-pro): gpt-5.5-pro, 1.05M context, responses protocol, OpenAI route.
- [GPT-5.6 Terra API](https://openapi.felo.ai/models/openai/gpt-5.6-terra): gpt-5.6-terra, 1.05M context, responses protocol, OpenAI route.
- [GPT-5.5 API](https://openapi.felo.ai/models/openai/gpt-5.5): gpt-5.5, 1.05M context, responses protocol, OpenAI route.
- [GPT-5.6 Luna API](https://openapi.felo.ai/models/openai/gpt-5.6-luna): gpt-5.6-luna, 400K context, responses protocol, OpenAI route.
- [Claude Sonnet 4.6 API](https://openapi.felo.ai/models/anthropic/claude-sonnet-4-6): claude-sonnet-4-6, 1M context, messages protocol, Anthropic route.
- [Claude Haiku 4.5 API](https://openapi.felo.ai/models/anthropic/claude-haiku-4-5): claude-haiku-4-5, 200K context, messages protocol, Anthropic route.

## Harness APIs
- [Search API](https://openapi.felo.ai/docs/api-reference/chat): Real-time web search and answer generation for agents, research tools, support bots, and content workflows.
- [PPT Task API](https://openapi.felo.ai/docs/api-reference/ppt-tasks): Generate slide decks asynchronously from prompts, themes, and optional LiveDoc context, then poll task status and retrieve results.
- [SuperAgent API](https://openapi.felo.ai/docs/api-reference/superagent): Create streaming agent conversations, consume SSE output, follow up inside the same thread, and attach LiveDoc context.
- [Web Fetch API](https://openapi.felo.ai/docs/api-reference/web-fetch): Extract webpage content as HTML, text, or Markdown with crawl mode, readability, selector, and timeout options.
- [X Search API](https://openapi.felo.ai/docs/api-reference/x-search): Search X users, tweets, timelines, and replies with pagination metadata for research, monitoring, and content agents.
- [Mindmap API](https://openapi.felo.ai/docs/api-reference/mindmap): Create structured mindmaps from a topic, question, or optional LiveDoc context for planning and research workflows.
- [Landing Page Task API](https://openapi.felo.ai/docs/api-reference/landing-page): Generate landing page content asynchronously, query task history, and retrieve generated HTML results for campaign workflows.
- [LiveDoc API](https://openapi.felo.ai/docs/api-reference/livedocs): Create knowledge bases, upload resources, import URLs, and run semantic retrieval for context-aware agents.
- [YouTube Subtitling API](https://openapi.felo.ai/docs/api-reference/youtube-subtitling): Fetch YouTube subtitles by video code with optional language and timestamp parameters for media research agents.

## Documentation
- [Getting Started](https://openapi.felo.ai/docs/getting-started): Get one API key, choose an AI tool, open its setup guide, and run your first workflow API call.
- [Authentication](https://openapi.felo.ai/docs/authentication): Authenticate requests with API keys, follow security practices, and handle auth errors.
- [Felo Skills for AI Agents](https://openapi.felo.ai/docs/felo-skills): Install every Felo AI Skill into Codex, Claude Code, OpenClaw, or Hermes Agent.
- [Claude Code and Codex Configuration](https://openapi.felo.ai/docs/api-reference/v2/llm-agent-clients): Configure Claude Code and Codex to route model calls through Felo API Platform.
- [Codex](https://openapi.felo.ai/docs/agent-clients/codex): Configure Codex CLI with a Felo custom model provider.
- [Claude Code](https://openapi.felo.ai/docs/agent-clients/claude-code): Configure Claude Code to route Anthropic-compatible model calls through Felo API Platform.
- [OpenCode](https://openapi.felo.ai/docs/agent-clients/opencode): Connect OpenCode to Felo through the OpenAI-compatible endpoint.
- [OpenClaw](https://openapi.felo.ai/docs/agent-clients/openclaw): Connect OpenClaw to Felo API Platform for assistant and agent workflows.
- [Hermes Agent](https://openapi.felo.ai/docs/agent-clients/hermes-agent): Configure Hermes Agent with Felo API Platform model access.
- [TRAE](https://openapi.felo.ai/docs/agent-clients/trae): Use Felo API Platform from TRAE through compatible model provider settings.
- [OpenViking](https://openapi.felo.ai/docs/agent-clients/openviking): Connect OpenViking to Felo API Platform using a compatible provider profile.
- [DeepSeek Harness](https://openapi.felo.ai/docs/agent-clients/deepseek-harness): Connect DeepSeek Harness to Felo through its native DeepSeek adapter or a custom OpenAI-compatible provider.
- [Cursor](https://openapi.felo.ai/docs/agent-clients/cursor): Use Felo API Platform in Cursor through custom OpenAI-compatible settings where available.
- [Cline](https://openapi.felo.ai/docs/agent-clients/cline): Configure Cline with Felo API Platform model access.
- [Roo Code](https://openapi.felo.ai/docs/agent-clients/roo-code): Configure Roo Code with a Felo-compatible model provider.
- [Kilo Code](https://openapi.felo.ai/docs/agent-clients/kilo-code): Configure Kilo Code with Felo API Platform model access.
- [Other AI Tools](https://openapi.felo.ai/docs/agent-clients/other-tools): Connect any client that supports OpenAI-compatible or Anthropic-compatible endpoints.
- [Chat API](https://openapi.felo.ai/docs/api-reference/chat): Integrate AI-powered conversational search with query analysis, web resources, and citations.
- [LLM API](https://openapi.felo.ai/docs/api-reference/llm): Call Felo model endpoints through OpenAI-compatible and Anthropic-compatible protocols.
- [PPT Task API](https://openapi.felo.ai/docs/api-reference/ppt-tasks): Create PPT generation tasks, list themes, and poll shared task endpoints.
- [Landing Page Task API](https://openapi.felo.ai/docs/api-reference/landing-page): Generate landing pages asynchronously and query task history.
- [SuperAgent API](https://openapi.felo.ai/docs/api-reference/superagent): Create conversations, consume SSE streams, follow up, and query conversation metadata.
- [LiveDoc API](https://openapi.felo.ai/docs/api-reference/livedocs): Create knowledge bases, manage resources, and run semantic retrieval and routing.
- [Web Fetch API](https://openapi.felo.ai/docs/api-reference/web-fetch): Extract webpage content as HTML, text, or Markdown with selector and readability options.
- [YouTube Subtitling API](https://openapi.felo.ai/docs/api-reference/youtube-subtitling): Fetch YouTube subtitles with optional language and timestamp parameters.
- [X Search API](https://openapi.felo.ai/docs/api-reference/x-search): Search X users, tweets, timelines, and replies with pagination metadata.
- [Mindmap API](https://openapi.felo.ai/docs/api-reference/mindmap): Create mindmaps from prompts and optional LiveDoc context.

## API Conventions
- Base URL: https://openapi.felo.ai
- Authentication: Authorization: Bearer YOUR_API_KEY or X-API-Key: YOUR_API_KEY
- Free trial: default free plan includes daily credits for selected models and tools.