Trellis Session Insight
mindfold-ai/Trellis
Reach into past AI conversation history through the trellis mem CLI.
Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0…
Install Export Download Debugging
$ npx skills add nexu-io/open-design --skill export-download-debugging -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install nexu-io/open-design export-download-debugging --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/export-download-debugging .claude/skills/export-download-debugging && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .claude/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/nexu-io/open-design/tree/main/skills/export-download-debuggingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add nexu-io/open-design --skill export-download-debugging -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install nexu-io/open-design export-download-debugging --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/export-download-debugging .agents/skills/export-download-debugging && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .agents/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add nexu-io/open-design --skill export-download-debugging -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install nexu-io/open-design export-download-debugging --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/export-download-debugging .cursor/skills/export-download-debugging && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .cursor/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/nexu-io/open-design.git --path skills/export-download-debugging--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add nexu-io/open-design --skill export-download-debugging -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install nexu-io/open-design export-download-debugging --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/export-download-debugging .gemini/skills/export-download-debugging && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .gemini/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install nexu-io/open-design export-download-debuggingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add nexu-io/open-design --skill export-download-debugging -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/export-download-debugging .github/skills/export-download-debugging && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .github/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add nexu-io/open-design --skill export-download-debugging -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install nexu-io/open-design export-download-debugging --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexu-io/open-design.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/export-download-debugging .opencode/skills/export-download-debugging && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "export-download-debugging" agent skill from https://github.com/nexu-io/open-design/tree/main/skills/export-download-debugging into .opencode/skills/export-download-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "export-download-debugging", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
export-download-debugging- GitHub stars
- 100k
- Token cost
- ~725 tokens
- SKILL.md length
- 346 words
- Files
- 1
- Skills in repo
- 245
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0…
- Works in 6 steps: Prepare and validate the export payload… → Prefer the simplest stable save channel… → Avoid opening a native picker before the… → …
- Tasks that involve Debugging
- SKILL.md covers Core rule, Evidence, Fix order and Validation
- Calls pnpm
What it does
Export Download Debugging is an agent skill from nexu-io/open-design. Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0 KB files.
Its SKILL.md is about 730 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Debugging. The repository describes itself as: 🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes… The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Debugging
Example prompts
- “/export-download-debugging”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Prepare and validate the export payload first; disable Save until bytes are
- Prefer the simplest stable save channel for the host. If
- Avoid opening a native picker before the payload is ready. This prevents the
- For PNG fallback, prefer a verified non-empty data URL when blob URLs,
- In Electron, add explicit Save As filters for exported image extensions
- Keep the UI restrained: format selection, filename/path hint, clear pending
What it can do on your machine
Read from SKILL.md and the folder at commit 3449fa6. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
pnpm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Export Download Debugging loads about 725 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 346 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from nexu-io/open-design at commit 3449fa6, republished under its Apache-2.0 licence (© nexu-io). 346 words, ~725 tokens.
Download SKILL.mdSave it as
.claude/skills/export-download-debugging/SKILL.md (or your agent's skills folder).- name
- export-download-debugging
- description
- Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0 KB files.
- triggers
- export image failed, image export, download is 0kb, 0 KB file, showSaveFilePicker, createWritable, blob URL, Electron download
- od.mode
- utility
- od.category
- web-artifacts
Export Download Debugging
Use this when an export or download appears to run but produces an empty, missing, or unusable file. It is tuned for browser previews, iframe capture, and Electron shells.
Core rule
Separate capture from save. Prove the export payload has non-zero bytes before debugging the destination path. A 0 KB file often means the native picker or host created the target file, then the write failed or was blocked.
Evidence
- Record the payload type, MIME type, byte length, object URL or data URL path, and thrown error name/message.
- Check browser console output and app logs around
showSaveFilePicker,createWritable,<a download>,URL.createObjectURL, and URL revocation. - In Electron, inspect the
will-downloadpath: filename, MIME, file extension, save dialog filters, cancellation, and final file size. - Confirm the actual downloaded file size on disk and whether it opens in a normal image viewer.
Fix order
- Prepare and validate the export payload first; disable Save until bytes are available.
- Prefer the simplest stable save channel for the host. If
showSaveFilePicker().createWritable()fails, is sandboxed, or creates empty files, route to<a download>or Electron's download manager instead. - Avoid opening a native picker before the payload is ready. This prevents the host from creating an empty destination file on later write failure.
- For PNG fallback, prefer a verified non-empty data URL when blob URLs, revocation timing, CSP, or iframe sandboxing are suspicious.
- In Electron, add explicit Save As filters for exported image extensions
(
.png,.jpg,.jpeg,.webp) so users can choose a real image target. - Keep the UI restrained: format selection, filename/path hint, clear pending and error states, and one primary save action.
Validation
- Add or update tests for non-empty payload preparation, fallback save behavior, file extension/MIME mapping, and UI disabled/error states.
- Run focused export tests, then
pnpm --filter @open-design/web typecheck. - If Electron download handling changed, also run
pnpm --filter @open-design/desktop typecheck. - Before landing, run
pnpm guard, inspect the staged diff for unrelated files, generated artifacts, and accidental secrets, then use the repository's PR quality-gate workflow if the fix is being prepared for review.
© nexu-io, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/export-download-debugging of nexu-io/open-design.
Open the folder on GitHubat commit 3449fa6
Compare with similar skills
Export Download Debugging next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Export Download Debugging this skillnexu-io/open-design | 100k | — | ~725 | Automated safety check: Pass | Apache-2.0 | |
| Trellis Session Insightmindfold-ai/Trellis | 15k | 4 repos | ~1.7k | Automated safety check: Pass | AGPL-3.0 | |
| Native Data FetchingCherryHQ/cherry-studio-app | 4k | 6 repos | ~2.9k | Automated safety check: Notes | MIT | |
| Debugging Executionsn8n-io/n8n | 207k | — | ~2.6k | Automated safety check: Pass | Custom licence | |
| Aoti Debugpytorch/pytorch | 104k | 1 repos | ~1.7k | Automated safety check: Pass | Custom licence | |
| Herdr Throwaway Reproductionherdrdev/herdr | 43k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Export Download Debugging
What does Export Download Debugging do?
Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0…. Export Download Debugging is an agent skill from nexu-io/open-design. Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0 KB files.
When should I use Export Download Debugging?
Export Download Debugging fits situations like: tasks that involve Debugging.
How do I install Export Download Debugging in Claude Code?
Run `npx skills add nexu-io/open-design --skill export-download-debugging -a claude-code`. Or copy the skill folder (skills/export-download-debugging in nexu-io/open-design) into .claude/skills/export-download-debugging in your project. Claude Code loads it when a task matches its description.
How do I install Export Download Debugging in Codex?
Run `npx skills add nexu-io/open-design --skill export-download-debugging -a codex`. Or copy the skill folder (skills/export-download-debugging in nexu-io/open-design) into .agents/skills/export-download-debugging in your project. Codex loads it when a task matches its description.
Can I use Export Download Debugging in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nexu-io/open-design --skill export-download-debugging -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/export-download-debugging, .gemini/skills/export-download-debugging, .github/skills/export-download-debugging and .opencode/skills/export-download-debugging in your project.
What does Export Download Debugging need to run?
Going by SKILL.md and its folder, Export Download Debugging needs the command-line tools its instructions call (pnpm).
Does Export Download Debugging access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Export Download Debugging safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Export Download Debugging use?
Export Download Debugging is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Export Download Debugging use?
About 725 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Export Download Debugging?
Skills that share tags, products or a category with Export Download Debugging: Trellis Session Insight (mindfold-ai/Trellis, 15k stars), Native Data Fetching (CherryHQ/cherry-studio-app, 4k stars), Debugging Executions (n8n-io/n8n, 207k stars) and Aoti Debug (pytorch/pytorch, 104k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Export Download Debugging?
nexu-io (a GitHub organization) maintains it in nexu-io/open-design, which has 99,905 GitHub stars. The repository holds 245 skills in this directory. The repository was last updated on October 8, 2026.
Source: nexu-io/open-design on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.