Plugin Testing
polyipseity/obsidian-terminal
Skill for testing Obsidian plugin features in this repository.
A skill your agent uses when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests.
Install Sandbox Keys
$ npx skills add hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins sandbox-keys --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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .claude/skills/sandbox-keys && 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 "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .claude/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keysType 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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins sandbox-keys --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .agents/skills/sandbox-keys && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .agents/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins sandbox-keys --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .cursor/skills/sandbox-keys && 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 "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .cursor/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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/hashgraph-online/awesome-codex-plugins.git --path plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys--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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins sandbox-keys --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .gemini/skills/sandbox-keys && 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 "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .gemini/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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 hashgraph-online/awesome-codex-plugins sandbox-keysInstalls 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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .github/skills/sandbox-keys && 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 "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .github/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins sandbox-keys --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys .opencode/skills/sandbox-keys && 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 "sandbox-keys" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys into .opencode/skills/sandbox-keys/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-keys", 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
sandbox-keys- GitHub stars
- 1.3k
- Token cost
- ~829 tokens
- SKILL.md length
- 266 words
- Files
- 1
- Skills in repo
- 714
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
A skill your agent uses when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests.
- The user wants to try Kreuzberg Cloud without signing up
- SKILL.md covers What you get, Endpoint, Response (200) and Examples, plus 3 more sections
- Calls curl and jq; reaches api.kreuzberg.dev; needs KREUZBERG_API_KEY
- Needs an ephemeral key for evaluation
What it does
Sandbox Keys is an agent skill from hashgraph-online/awesome-codex-plugins. Use when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests. Covers POST /v1/sandbox/key — the no-auth endpoint, quota, TTL, and cleanup expectations.
Its SKILL.md is about 830 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 Testing & QA, covering Integration testing. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is Apache-2.0.
When your agent uses it
- The user wants to try Kreuzberg Cloud without signing up
- Needs an ephemeral key for evaluation
- CI integration tests
Example prompts
- “/sandbox-keys”
Requirements
- Python 3
- A credential in KREUZBERG_API_KEY
What it can do on your machine
Read from SKILL.md and the folder at commit 9e7b281. 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:
curljq
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
api.kreuzberg.dev
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
KREUZBERG_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Sandbox Keys loads about 829 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 266 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 hashgraph-online/awesome-codex-plugins at commit 9e7b281, republished under its Apache-2.0 licence (© hashgraph-online). 266 words, ~829 tokens.
Download SKILL.mdSave it as
.claude/skills/sandbox-keys/SKILL.md (or your agent's skills folder).- name
- sandbox-keys
- description
- Use when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests. Covers POST /v1/sandbox/key — the no-auth endpoint, quota, TTL, and cleanup expectations.
Sandbox keys
POST /v1/sandbox/key issues ephemeral, anonymous API keys. Use these
for evaluation, demos, and integration smoke tests — never for production
workloads.
What you get
| Property | Value |
|---|---|
| Format | sk_sandbox_* |
| TTL | 24 hours from issue |
| Quota | 50 pages, hard cap |
| Auth required to mint | None |
| IP throttle | 10 keys per IP per 24 hours |
The 50-page quota is per key, not per IP. The IP throttle prevents abuse of the no-auth mint endpoint.
Endpoint
POST https://api.kreuzberg.dev/v1/sandbox/keyNo Authorization header — this is the only authenticated-by-omission
endpoint in the API.
Response (200)
{
"api_key": "sk_sandbox_ABC123DEF456GHI789JKL012MNO345PQR678STU901VWX234",
"expires_at": "2025-12-21T10:00:00Z",
"pages_remaining": 50
}After 24 hours or 50 pages — whichever comes first — the key returns
401 on every endpoint. The key is not renewable; mint a fresh one.
Examples
Mint and use
KREUZBERG_API_KEY=$(curl -sX POST https://api.kreuzberg.dev/v1/sandbox/key \
| jq -r .api_key)
curl -sX POST https://api.kreuzberg.dev/v1/extract \
-H "Authorization: Bearer $KREUZBERG_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"documents":[{"filename":"hi.txt","mime_type":"text/plain","data":"aGVsbG8="}],
"options":{"extraction_config":{"output_format":"markdown"}}
}'TypeScript SDK
import { KreuzbergCloud } from "@kreuzberg/cloud";
const client = await KreuzbergCloud.fromSandbox();
const result = await client.extractAndWait({
file: new Blob(["Hello world"], { type: "text/plain" }),
});
console.log(result.result?.content);fromSandbox() mints a key under the hood and configures the client.
Python SDK
import asyncio
from kreuzberg_cloud import AsyncKreuzbergCloud
async def main() -> None:
async with await AsyncKreuzbergCloud.from_sandbox() as client:
job = await client.extract_and_wait(file=b"hello world")
print(job.status, job.result and job.result.content)
asyncio.run(main())When to recommend sandbox vs production keys
| Use sandbox | Use production |
|---|---|
| First-time evaluation, no signup yet | Anything user-facing or business-critical |
| Local smoke tests, demos | CI on the main branch |
| One-off doc to test the API surface | Recurring batch pipelines |
| Onboarding flow that bootstraps an SDK | Any workload >50 pages |
If the user already has a production key, do not silently switch to a sandbox key — production keys carry the right quota, billing, and project-scoped resources.
Cleanup
Sandbox keys self-expire after 24 hours. No revocation endpoint exists — nothing to clean up. Do not commit sandbox keys to version control even though they're short-lived; treat them like any other credential.
Errors
| Status | Cause |
|---|---|
429 | IP has minted 10 keys in the last 24 hours. Wait or use a production key. |
500 | Server-side mint failure; retry with backoff. |
© hashgraph-online, 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 plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys of hashgraph-online/awesome-codex-plugins.
Open the folder on GitHubat commit 9e7b281
Compare with similar skills
Sandbox Keys 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 |
|---|---|---|---|---|---|---|
| Sandbox Keys this skillhashgraph-online/awesome-codex-plugins | 1.3k | — | ~829 | Automated safety check: Pass | Apache-2.0 | |
| Plugin Testingpolyipseity/obsidian-terminal | 950 | — | ~828 | Automated safety check: Pass | AGPL-3.0 | |
| Create Modulecartography-cncf/cartography | 4.1k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 | |
| Td Integration Testmarcus/td | 251 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Integration E2E Testingshinpr/claude-code-workflows | 693 | — | ~3.5k | Automated safety check: Pass | MIT | |
| JS-in-HTML Testingliaohch3/claude-tap | 3.3k | — | ~924 | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Sandbox Keys
What does Sandbox Keys do?
A skill your agent uses when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests. Sandbox Keys is an agent skill from hashgraph-online/awesome-codex-plugins. Use when the user wants to try Kreuzberg Cloud without signing up, or needs an ephemeral key for evaluation, demos, or CI integration tests.
When should I use Sandbox Keys?
Sandbox Keys fits situations like: the user wants to try Kreuzberg Cloud without signing up; needs an ephemeral key for evaluation; CI integration tests.
How do I install Sandbox Keys in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a claude-code`. Or copy the skill folder (plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys in hashgraph-online/awesome-codex-plugins) into .claude/skills/sandbox-keys in your project. Claude Code loads it when a task matches its description.
How do I install Sandbox Keys in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a codex`. Or copy the skill folder (plugins/kreuzberg-dev/plugins/plugins/kreuzberg-cloud/skills/sandbox-keys in hashgraph-online/awesome-codex-plugins) into .agents/skills/sandbox-keys in your project. Codex loads it when a task matches its description.
Can I use Sandbox Keys 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 hashgraph-online/awesome-codex-plugins --skill sandbox-keys -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sandbox-keys, .gemini/skills/sandbox-keys, .github/skills/sandbox-keys and .opencode/skills/sandbox-keys in your project.
What does Sandbox Keys need to run?
Going by SKILL.md and its folder, Sandbox Keys needs the command-line tools its instructions call (curl and jq) and credentials named KREUZBERG_API_KEY. Our summary lists: Python 3; A credential in KREUZBERG_API_KEY.
Does Sandbox Keys access the network?
SKILL.md names 1 domain. In commands or code: api.kreuzberg.dev; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Sandbox Keys 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 Sandbox Keys use?
Sandbox Keys 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 Sandbox Keys use?
About 829 tokens (SKILL.md is roughly 3.3k 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 Sandbox Keys?
Skills that share tags, products or a category with Sandbox Keys: Plugin Testing (polyipseity/obsidian-terminal, 950 stars), Create Module (cartography-cncf/cartography, 4.1k stars), Td Integration Test (marcus/td, 251 stars) and Integration E2E Testing (shinpr/claude-code-workflows, 693 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sandbox Keys?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,255 GitHub stars. The repository holds 714 skills in this directory. The repository was last updated on October 9, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.