atlas-cloud
calesthio/OpenMontage · Agent Skill
Generates and edits images and videos via the Atlas Cloud gateway, supporting various AI media models.
Jump to install ↓Overview
| Publisher | |
|---|---|
| Repository | calesthio/OpenMontage ↗ |
| Skill folder | atlas-cloud |
| Stars | 58,214 |
| Forks | 7,332 |
| Bundled files | 1 |
| License | AGPL-3.0 |
| Last updated | September 6, 2026 |
| Links | Skill source ↗ · Repository ↗ |
Mozgi check
What we found in the skill files. Details come with a subscription.
Installation
A skill is a folder with a SKILL.md file. Pick your agent and run the commands in a terminal (macOS, Linux or Git Bash on Windows) from your project root.
Copy the prompt into Claude, Codex or another assistant: it will review the skill and install it for you.
Install the “atlas-cloud” skill from mozgi.io (https://mozgi.io/skills/atlas-cloud/) for me. 1. Download the archive: https://mozgi.io/skills/atlas-cloud/download If it fails, take the skill folder from the source: https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/atlas-cloud 2. Read SKILL.md and the other files. Check the skill is safe: no hidden commands, no sending data elsewhere, no scripts doing something other than described. If anything looks suspicious, stop and tell me. 3. Put the “atlas-cloud” folder into your agent's skills folder: .claude/skills/ for Claude Code, .agents/skills/ for Codex, .cursor/skills/ for Cursor, .gemini/skills/ for Gemini CLI. Inside the project if we are in one, otherwise in the home folder (~/.claude/skills/ etc.). 4. Make sure <skills folder>/atlas-cloud/SKILL.md exists. 5. Briefly tell me what this skill does and offer to try it on my task. If you cannot do a step yourself, tell me what to click or type.
git clone --depth 1 --branch main https://github.com/calesthio/OpenMontage.git /tmp/OpenMontage mkdir -p .claude/skills cp -r /tmp/OpenMontage/.agents/skills/atlas-cloud .claude/skills/atlas-cloud
Restart Claude Code — the skill appears in the list; call it manually with /atlas-cloud. For all projects use ~/.claude/skills.
git clone --depth 1 --branch main https://github.com/calesthio/OpenMontage.git /tmp/OpenMontage mkdir -p .agents/skills cp -r /tmp/OpenMontage/.agents/skills/atlas-cloud .agents/skills/atlas-cloud
Codex looks for skills in .agents/skills from the current folder up to the repo root; call one with /skills or $atlas-cloud. For all projects use ~/.agents/skills.
git clone --depth 1 --branch main https://github.com/calesthio/OpenMontage.git /tmp/OpenMontage mkdir -p .cursor/skills cp -r /tmp/OpenMontage/.agents/skills/atlas-cloud .cursor/skills/atlas-cloud
Cursor picks the skill up on start; call it with “/” in Agent chat. Cursor also reads .claude/skills and .agents/skills. For all projects use ~/.cursor/skills.
git clone --depth 1 --branch main https://github.com/calesthio/OpenMontage.git /tmp/OpenMontage mkdir -p .gemini/skills cp -r /tmp/OpenMontage/.agents/skills/atlas-cloud .gemini/skills/atlas-cloud
Gemini CLI offers to activate the skill when a task matches — you approve it. For all projects use ~/.gemini/skills.
Read SKILL.md and any companion files before deciding whether to install. Click a file to preview it.
SKILL.md contents
Original author text · read-onlyAtlas Cloud
Route complete productions through image_selector or video_selector. Call
atlas_image or atlas_video directly when the user names Atlas Cloud or an
exact Atlas model. Never substitute a direct vendor endpoint for an Atlas request.
Set ATLASCLOUD_API_KEY. The aliases ATLAS_CLOUD_API_KEY and ATLAS_API_KEY
are accepted for compatibility.
Preflight every paid call
1. Read tool.get_info()["model_catalog"]; do not infer availability from a
search collection or invent a task suffix.
2. Select an exact model id and operation supported by that catalog.
3. Announce the Atlas tool, provider, exact model, request count, and estimated
cost before submitting.
4. Use local-path inputs when convenient. The tool uploads them through Atlas.
5. Save outputs inside the active projects/<project-id>/ tree and inspect them.
Video routes
| Family | Operations | Exact route notes |
|---|---|---|
| Seedance 2.5 | text, image, reference | bytedance/seedance-2.5/{text,image,reference}-to-video; image mode uses image plus optional last_image; reference mode accepts up to 30 images, 10 videos, and 10 audios (including audio-only); 4–30s; $0.134/s |
| Seedance 2.0 | text, image, reference | bytedance/seedance-2.0/{text,image,reference}-to-video; 4–15s; $0.112/s |
| Gemini Omni Flash | text, image, reference, video edit | Standard routes use google/gemini-omni-flash/...; developer routes exist for text/image/reference only. Standard image mode uses one image; standard reference uses images; developer reference requires one video_clips object. |
| MiniMax H3 | text, image, reference | minimax/h3/{text,image,reference}-to-video; image mode supports optional end_image; reference mode requires refers objects; 4–15s; 768P/2K; $0.10/s |
Use canonical OpenMontage fields:
tool.execute({
"prompt": "...",
"model": "minimax/h3/reference-to-video",
"operation": "reference_to_video",
"duration": 10,
"resolution": "2K",
"reference_images": ["projects/demo/character.png"],
"reference_audios": ["projects/demo/performance.wav"],
"output_path": "projects/demo/h3.mp4",
})
For Gemini developer reference video, pass video_clips objects with url,
start, and ends. For H3, callers may pass normalized reference_images,
reference_videos, and reference_audios; the tool converts them to refers.
Do not silently clamp duration, resolution, or ratio. Invalid values must fail
before billing with the supported choices in the error.
Image routes
| Family | Operations | Exact route notes |
|---|---|---|
| Seedream 5.0 Pro | generate, edit, decompose | bytedance/seedream-v5.0-pro/text-to-image, /edit, /layer-decomposition; edit accepts up to 10 images; sizes use WIDTH*HEIGHT |
| Seedream 5.0 Lite | edit | bytedance/seedream-v5.0-lite/edit; no live Lite text-to-image sibling is assumed; accepts up to 14 images |
| GPT Image 2 | generate, edit | openai/gpt-image-2/text-to-image, /edit; sizes use WIDTHxHEIGHT; edit accepts up to 10 images |
| Nano Banana 2 | generate, edit | google/nano-banana-2/text-to-image, /edit; uses aspect ratio plus 1k/2k/4k resolution; edit accepts up to 14 images |
Set generation_mode to generate, edit, or decompose. Source images can
be supplied as image_path, image_paths, image_url, or image_urls.
tool.execute({
"prompt": "Replace the packaging with matte cobalt glass; preserve the logo",
"model": "google/nano-banana-2/edit",
"generation_mode": "edit",
"image_paths": ["projects/campaign/source.png"],
"resolution": "2k",
"output_path": "projects/campaign/revised.png",
})
Result and failure contract
Both tools submit to Atlas, poll the returned prediction id, download every
output, and return ToolResult provenance containing the provider, exact model,
prediction id, submitted parameters, source URL, artifact paths, and estimated
cost. A missing key, unsupported route, invalid enum, missing media input, failed
prediction, timeout, or download failure must return a failed result without
switching providers.
Confirm current pricing and schemas from the machine-readable model page
(Accept: text/markdown) immediately before quoting or spending on a batch.
Frequently asked questions
What does the atlas-cloud skill do?
Generates and edits images and videos via the Atlas Cloud gateway, supporting various AI media models.
How do I install atlas-cloud?
Open the “Installation” block on this page and pick your agent — Claude Code, Codex, Cursor or Gemini CLI — for ready-made commands that copy the skill folder to the right place. Or copy the prompt from the “Via assistant” tab and let the assistant review and install the skill.
Which AI models work with atlas-cloud?
Skills are plain Markdown instructions (the Agent Skills format), so atlas-cloud works with any agent that reads SKILL.md: Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and more. The model loads the instructions only when a task matches the skill's description.
Is atlas-cloud free?
The skill is published openly by calesthio under the AGPL-3.0 license. The skill itself costs nothing — you only pay your AI provider for the tokens you use.
Is it safe to install skills?
A skill is a set of instructions your agent will follow, so read SKILL.md and its companion files before installing. Scripts in the skill folder only run if your agent runs them — keep an eye on what it does and do not grant unnecessary permissions.
How is a skill different from an MCP server or a plugin?
An MCP server or plugin gives the model new tools — code that runs and returns a result. A skill gives it knowledge and process: how to approach a task, which steps to follow and what good output looks like. It needs no server or API key.