Skills

After HiAPI Skills are installed, submit image or video generation requests to Claude Code, Codex, or OpenClaw. Generation skills apply the documented model parameters, start the generation, and return the result. Prompt-only skills prepare or review prompts without creating an API task.

Generation skills use the Unified Async API and require HIAPI_API_KEY. Prompt-only skills do not create API tasks and do not require an API key.

The skills

Each card provides an installation command. Copy the command and execute it in a terminal.

Image generation

GPT Image 2

Generate images from text, or edit and combine images with reference inputs. The available standard, Pro, and image-to-image variants provide different quality and cost tiers for posters, illustrations, product shots, and covers.

Model parameters · GitHub

Install npx -y github:HiAPIAI/hiapi-gpt-image-2-skill -y

Seedream 5.0 Pro

Generate and edit images with accurate in-image text, brush calligraphy, photorealistic detail, and multi-reference composition. Use quality=basic for 1K iteration or quality=high for 2K delivery.

Model parameters · GitHub

Install npx -y github:HiAPIAI/hiapi-seedream-5-0-pro-skill -y

Video generation

Seedance 2.5

Produce text-to-video, image-to-video, and reference-to-video clips up to 30 seconds with native audio. Includes preflight estimates, idempotent submission, task recovery, downloads, and technical and creative quality checks.

Model parameters · GitHub

Install

Seedance 2.0

Flagship video generation with text-to-video, first/last-frame control, image/video/audio references, and synchronized audio. Suitable for cinematic video production.

Model parameters · GitHub

Install

HappyHorse 1.0

Fast text-to-video generation for 3–15 second clips at up to 1080p. Suitable for short clips, rapid validation, and cost-sensitive workloads.

Model parameters · GitHub

Install

Prompt generation

Video Prompt Generator

Expands a brief idea, link, or topic into a complete video prompt with shot descriptions, camera movement, on-screen text, and pacing for use with the video skills above.

GitHub

Install npx -y github:HiAPIAI/hiapi-video-prompt-generator-skill -y

Find more skills

View the HiAPI Skills collection

Install

1. Set up your API key

   Create one at Dashboard → API Keys, then export it (Node.js 18+ required):

   export HIAPI_API_KEY="your_hiapi_api_key_here"

2. Install the skills

   Everything at once

   The commands below install all six listed skills; each installer auto-detects Claude Code / Codex and selects the appropriate directory:

   npx -y github:HiAPIAI/hiapi-gpt-image-2-skill -y
   npx -y github:HiAPIAI/hiapi-seedream-5-0-pro-skill -y
   npx -y github:HiAPIAI/hiapi-seedance-2-5-video-skill -y
   npx -y github:HiAPIAI/hiapi-seedance-2-0-video-skill -y
   npx -y github:HiAPIAI/hiapi-happyhorse-1-0-video-skill -y
   npx -y github:HiAPIAI/hiapi-video-prompt-generator-skill -y

   Let your agent install

   Provide the following instruction to your AI tool to install the full set:

   Install all HiAPI skills following the llms-install.md at https://github.com/HiAPIAI/hiapi-skills

   Pick one

   To install one model, copy the corresponding command:

   # Image: GPT Image 2
   npx -y github:HiAPIAI/hiapi-gpt-image-2-skill -y
   
   # Image: Seedream 5.0 Pro
   npx -y github:HiAPIAI/hiapi-seedream-5-0-pro-skill -y
   
   # Video: Seedance 2.5
   npx -y github:HiAPIAI/hiapi-seedance-2-5-video-skill -y
   
   # Video: Seedance 2.0
   npx -y github:HiAPIAI/hiapi-seedance-2-0-video-skill -y
   
   # Video: HappyHorse 1.0
   npx -y github:HiAPIAI/hiapi-happyhorse-1-0-video-skill -y
   
   # Prompt generation
   npx -y github:HiAPIAI/hiapi-video-prompt-generator-skill -y

3. Start using the skills

   After installation, submit requests to your agent. For example:

   “Generate a minimal product poster with GPT Image 2”

   “Turn this idea into a video prompt first, then generate it with Seedance”

   “Make a 3-second test video with HappyHorse”

OpenClaw users

Install with openclaw skills add https://github.com/HiAPIAI/hiapi-gpt-image-2-skill, replacing the repository name for other skills. You can also clone the repositories into ~/.claude/skills/ or ~/.codex/skills/.

Results are downloaded to a local outputs/ directory when supported. Remote CDN links expire after about 7 days; download files that must be retained.

Updates

Before each run, skills check their version against the official skills.json catalog. A newer version produces an upgrade notice; breaking API changes require the installation command to be run again. The check is skipped when offline and does not block generation.

Set HIAPI_SKIP_UPDATE_CHECK=1 to turn the check off.

Troubleshooting

Symptom	Fix
HIAPI_API_KEY is required	Export the key — create one at Dashboard → API Keys
HTTP 401 / 403	Verify the API key is correct and active
HTTP 402, insufficient balance	Add funds at Dashboard → Billing; see pricing
HTTP 400 parameter errors	Check the parameter combination on the model pages
HTTP 429	Wait and retry, or reduce concurrent generations
”Update required” notice	Re-run the install command, then retry
Waiting times out	The task may still be generating — check later in the dashboard or via GET /v1/tasks/:id

For a single integration covering multiple models, use Remote MCP. For product integration, call the Unified Async API directly.