List all available Agnes AI models (text/chat, image, video) with their limits. Useful to discover model names before calling the other tools.

Capability 1 — Text generation & reasoning. OpenAI-compatible chat completions. Supports multi-turn conversation, system prompts, tool/function calling, streaming, and Thinking mode. Models: agnes-2.0-flash, agnes-1.5-flash. agnes-2.0-flash supports up to 1M-token context (set max_tokens up to 1048576). Vision is also available here by passing image_url content parts; use agnes_vision for a simpler image-understanding interface.

Capability 4 — Multimodal understanding. Send one or more images (public URLs or data URIs) plus a text instruction and the model describes, analyzes, OCRs, or answers questions about the visual content. Models: agnes-2.0-flash, agnes-1.5-flash (both accept image_url input).

Capability 2 — Image generation & editing. Text-to-Image and Image-to-Image (edit/transform/multi-image compose). Models: agnes-image-2.1-flash, agnes-image-2.0-flash. Required: model, prompt, size. For image-to-image, pass 'image' (array of public URLs or data URIs). Note: image dimensions must be multiples of 16. Put response_format inside extra_body (handled automatically here).

Capability 3 — Video & audio-video generation (async). Create a video task from text, a single image, multiple images, or keyframes. Model: agnes-video-v2.0. Returns task_id and video_id. Poll the result with agnes_video_query or agnes_video_wait. Highlights: width/height accept up to 4K (3840). Video dimensions must be multiples of 64. num_frames ≤ 441 and must equal 8n+1 (e.g. 81, 121, 161, 241, 441). frame_rate 1–60. seconds = num_frames / frame_rate.

Query the status/result of an async video task. Recommended: pass video_id (returned by agnes_video_create). Legacy: pass task_id. When status is 'completed', the final video URL is in remixed_from_video_id.

Poll an async video task (by video_id) until it reaches a terminal state (completed/failed) or times out. Returns the final result including the video URL when completed. Video generation can take tens of seconds to minutes.