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Skills

With HiAPI Skills installed, you can simply tell Claude Code, Codex, or OpenClaw things like “generate a poster” or “make a 5-second video” — the agent handles the parameters, the generation, and hands you the result.

Every skill runs on the Unified Async API: your HIAPI_API_KEY talks to api.hiapi.ai directly, with nothing in between.

The skills

Section titled “The skills”

Every card has a one-click install button — copy the command and paste it into your terminal.

Image generation

Section titled “Image generation”

GPT Image 2

Generate images from a sentence, or edit and restyle with reference images (up to 5). Great for posters, illustrations, product shots, and covers. Comes in standard, Pro, and matching image-to-image variants so you can trade off quality and cost.

Model parameters · GitHub

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

Video generation

Section titled “Video generation”

Seedance 2.0

Flagship video generation: text-to-video, lock first/last frames with images, steer style with reference images, videos, or audio — with synchronized sound built in. For polished, cinematic results.

Model parameters · GitHub

HappyHorse 1.0

Fast text-to-video: 3–15 seconds, up to 1080p, ready in minutes. Perfect for validating ideas quickly and producing short clips at low cost.

Model parameters · GitHub

Prompt generation

Section titled “Prompt generation”

Video Prompt Generator

Your video director. Got only a one-line idea, a link, or a topic? It fills in the shots, camera moves, on-screen text, and pacing, and produces a complete professional video prompt ready for the two video skills above — steadier results, fewer retakes.

GitHub

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

Install

Section titled “Install”

  1. Set up your API key

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

    Terminal window
    export HIAPI_API_KEY="your_hiapi_api_key_here"

  2. Install the skills

    Four commands install the full set; the installer auto-detects Claude Code / Codex and picks the right directory:

    Terminal window
    npx -y github:HiAPIAI/hiapi-gpt-image-2-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

  3. Start asking

    Skills work immediately after install — just talk to your agent:

    “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”

Results are downloaded to a local outputs/ directory when possible; remote CDN links expire after about 7 days, so download anything you want to keep.

Updates

Section titled “Updates”

Before each run, skills check their version against the official skills.json catalog: when a newer version exists you get a notice and everything keeps working; on breaking API changes the skill asks you to update first (just re-run the install command). The check skips silently when offline and never blocks generation.

Set HIAPI_SKIP_UPDATE_CHECK=1 to turn the check off.

Troubleshooting

Section titled “Troubleshooting”
SymptomFix
HIAPI_API_KEY is requiredExport the key — create one at Dashboard → API Keys
HTTP 401 / 403Verify the API key is correct and active
HTTP 402, insufficient balanceAdd funds at Dashboard → Billing; see pricing
HTTP 400 parameter errorsCheck the parameter combination on the model pages
HTTP 429Wait and retry, or reduce concurrent generations
”Update required” noticeRe-run the install command, then retry
Waiting times outThe task may still be generating — check later in the dashboard or via GET /v1/tasks/:id

Want one integration that covers every model? Use Remote MCP. Building it into your own product? Call the Unified Async API directly.