# Token4AI Cloud > Public customer and developer documentation for model APIs and cloud agents. Use the current key’s model catalog for availability. ## Guides - [Quickstart: your first model request](https://docs.token4ai.cloud/en/guides/quickstart/): Create an API key, discover an available model, send a request and verify usage in Token4AI Cloud. - [中文](https://docs.token4ai.cloud/guides/quickstart/) - [Markdown](https://docs.token4ai.cloud/markdown/en/quickstart.md) - [Authentication, API keys and billing groups](https://docs.token4ai.cloud/en/guides/authentication/): Configure Bearer, Anthropic and Gemini credentials; understand key rotation, scopes and billing groups. - [中文](https://docs.token4ai.cloud/guides/authentication/) - [Markdown](https://docs.token4ai.cloud/markdown/en/authentication.md) - [Models and capability discovery](https://docs.token4ai.cloud/en/guides/models/): List models visible to your key and choose the appropriate model id, protocol and capabilities. - [中文](https://docs.token4ai.cloud/guides/models/) - [Markdown](https://docs.token4ai.cloud/markdown/en/models.md) - [Chat Completions](https://docs.token4ai.cloud/en/guides/chat-completions/): Use the OpenAI-compatible chat endpoint for messages, conversation context, output controls and streaming. - [中文](https://docs.token4ai.cloud/guides/chat-completions/) - [Markdown](https://docs.token4ai.cloud/markdown/en/chat-completions.md) - [Responses and conversation state](https://docs.token4ai.cloud/en/guides/responses/): Use the Responses API and understand input, stream, store, previous_response_id, retrieval and deletion. - [中文](https://docs.token4ai.cloud/guides/responses/) - [Markdown](https://docs.token4ai.cloud/markdown/en/responses.md) - [Anthropic Messages and token estimates](https://docs.token4ai.cloud/en/guides/anthropic/): Configure Anthropic-native requests, system instructions, content blocks, streaming and count_tokens. - [中文](https://docs.token4ai.cloud/guides/anthropic/) - [Markdown](https://docs.token4ai.cloud/markdown/en/anthropic.md) - [Gemini native content generation](https://docs.token4ai.cloud/en/guides/gemini/): Use generateContent and streamGenerateContent with contents, parts and generationConfig. - [中文](https://docs.token4ai.cloud/guides/gemini/) - [Markdown](https://docs.token4ai.cloud/markdown/en/gemini.md) - [Streaming and connection handling](https://docs.token4ai.cloud/en/guides/streaming/): Implement SSE parsing, cancellation, timeouts and recovery without duplicate generation or false success states. - [中文](https://docs.token4ai.cloud/guides/streaming/) - [Markdown](https://docs.token4ai.cloud/markdown/en/streaming.md) - [Tool calling and structured output](https://docs.token4ai.cloud/en/guides/tools/): Build tool-call turns, validate function arguments and use JSON Schema for verifiable model output. - [中文](https://docs.token4ai.cloud/guides/tools/) - [Markdown](https://docs.token4ai.cloud/markdown/en/tools.md) - [Embeddings and reranking](https://docs.token4ai.cloud/en/guides/embeddings-rerank/): Build retrieval-augmented generation with embeddings and reranking, including input, dimensions and relevance scores. - [中文](https://docs.token4ai.cloud/guides/embeddings-rerank/) - [Markdown](https://docs.token4ai.cloud/markdown/en/embeddings-rerank.md) - [Vision input and image generation](https://docs.token4ai.cloud/en/guides/multimodal/): Distinguish vision understanding from generation, using image_url content parts and images/generations. - [中文](https://docs.token4ai.cloud/guides/multimodal/) - [Markdown](https://docs.token4ai.cloud/markdown/en/multimodal.md) - [Audio transcription, translation and speech](https://docs.token4ai.cloud/en/guides/audio/): Use audio/transcriptions, audio/translations and audio/speech with multipart uploads and binary output. - [中文](https://docs.token4ai.cloud/guides/audio/) - [Markdown](https://docs.token4ai.cloud/markdown/en/audio.md) - [Files API and file lifecycle](https://docs.token4ai.cloud/en/guides/files/): Upload, list, retrieve, download and delete files; distinguish Files API objects, static assets and model input. - [中文](https://docs.token4ai.cloud/guides/files/) - [Markdown](https://docs.token4ai.cloud/markdown/en/files.md) - [Python, JavaScript and developer tools](https://docs.token4ai.cloud/en/guides/sdk/): Connect official SDKs, custom base URLs, Codex and Claude Code to Token4AI Cloud. - [中文](https://docs.token4ai.cloud/guides/sdk/) - [Markdown](https://docs.token4ai.cloud/markdown/en/sdk.md) - [Create and run cloud agents](https://docs.token4ai.cloud/en/guides/agents/): Configure Codex, Claude Code, Pi, OpenClaw and Hermes with models, execution environments and tasks. - [中文](https://docs.token4ai.cloud/guides/agents/) - [Markdown](https://docs.token4ai.cloud/markdown/en/agents.md) - [Room conversations and recurring tasks](https://docs.token4ai.cloud/en/guides/rooms/): Trigger tasks with @Agent, schedule minute or hour loops and stop recurring execution from a Room. - [中文](https://docs.token4ai.cloud/guides/rooms/) - [Markdown](https://docs.token4ai.cloud/markdown/en/rooms.md) - [Task details, event logs and project boards](https://docs.token4ai.cloud/en/guides/tasks/): Inspect execution state, event duration and failures, and relate agent results to project completion criteria. - [中文](https://docs.token4ai.cloud/guides/tasks/) - [Markdown](https://docs.token4ai.cloud/markdown/en/tasks.md) - [Private runtimes and cloud execution](https://docs.token4ai.cloud/en/guides/runtimes/): Connect a private device for agent execution and understand availability, project access and harness compatibility. - [中文](https://docs.token4ai.cloud/guides/runtimes/) - [Markdown](https://docs.token4ai.cloud/markdown/en/runtimes.md) - [Wallet, billing groups and recharge orders](https://docs.token4ai.cloud/en/guides/billing/): Understand USD balances, group pricing, token settlement, recharge credit and order troubleshooting. - [中文](https://docs.token4ai.cloud/guides/billing/) - [Markdown](https://docs.token4ai.cloud/markdown/en/billing.md) - [Overview, usage history and cost analysis](https://docs.token4ai.cloud/en/guides/usage/): Read daily spend, total tokens, streaming requests and errors, then investigate usage per request. - [中文](https://docs.token4ai.cloud/guides/usage/) - [Markdown](https://docs.token4ai.cloud/markdown/en/usage.md) - [Static assets and folders](https://docs.token4ai.cloud/en/guides/assets/): Upload, preview, download and organize assets in Vega, including size and access constraints. - [中文](https://docs.token4ai.cloud/guides/assets/) - [Markdown](https://docs.token4ai.cloud/markdown/en/assets.md) - [Token4AI CLI and agent automation](https://docs.token4ai.cloud/en/guides/cli/): Authorize the CLI in your browser and automate wallet, key, usage and asset operations with JSON output. - [中文](https://docs.token4ai.cloud/guides/cli/) - [Markdown](https://docs.token4ai.cloud/markdown/en/cli.md) - [Account security and data regions](https://docs.token4ai.cloud/en/guides/security/): Manage sign-in, passkeys, profile and data region settings, including credential and privacy boundaries. - [中文](https://docs.token4ai.cloud/guides/security/) - [Markdown](https://docs.token4ai.cloud/markdown/en/security.md) - [Support, evidence attachments and incident reports](https://docs.token4ai.cloud/en/guides/support/): Report issues through support chat or tickets, attach images/files and provide actionable request or order identifiers. - [中文](https://docs.token4ai.cloud/guides/support/) - [Markdown](https://docs.token4ai.cloud/markdown/en/support.md) - [Errors, 429 responses and retry policy](https://docs.token4ai.cloud/en/guides/errors/): Distinguish credential, validation, model, rate-limit and upstream errors, with bounded retries and request ids. - [中文](https://docs.token4ai.cloud/guides/errors/) - [Markdown](https://docs.token4ai.cloud/markdown/en/errors.md) ## API reference - [OpenAPI](https://docs.token4ai.cloud/openapi.json): Documented model and file operations; vendor-specific options may vary.