Harness 24h
thu-nmrc/OpenHarness
A production-grade framework for long-running, autonomous agents based on Harness Engineering principles.
Enabling snapshot-based recovery and implementing custom snapshot save/load functions for Scala agents.
Install Golem Custom Snapshot Scala
$ npx skills add golemcloud/golem --skill golem-custom-snapshot-scala -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install golemcloud/golem golem-custom-snapshot-scala --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/golemcloud/golem.git skills-src && mkdir -p .claude/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .claude/skills/golem-custom-snapshot-scala && 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 "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .claude/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scalaType 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 golemcloud/golem --skill golem-custom-snapshot-scala -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install golemcloud/golem golem-custom-snapshot-scala --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/golemcloud/golem.git skills-src && mkdir -p .agents/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .agents/skills/golem-custom-snapshot-scala && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .agents/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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 golemcloud/golem --skill golem-custom-snapshot-scala -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install golemcloud/golem golem-custom-snapshot-scala --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/golemcloud/golem.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .cursor/skills/golem-custom-snapshot-scala && 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 "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .cursor/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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/golemcloud/golem.git --path golem-skills/skills/scala/golem-custom-snapshot-scala--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 golemcloud/golem --skill golem-custom-snapshot-scala -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install golemcloud/golem golem-custom-snapshot-scala --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/golemcloud/golem.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .gemini/skills/golem-custom-snapshot-scala && 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 "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .gemini/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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 golemcloud/golem golem-custom-snapshot-scalaInstalls 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 golemcloud/golem --skill golem-custom-snapshot-scala -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/golemcloud/golem.git skills-src && mkdir -p .github/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .github/skills/golem-custom-snapshot-scala && 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 "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .github/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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 golemcloud/golem --skill golem-custom-snapshot-scala -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install golemcloud/golem golem-custom-snapshot-scala --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/golemcloud/golem.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/golem-skills/skills/scala/golem-custom-snapshot-scala .opencode/skills/golem-custom-snapshot-scala && 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 "golem-custom-snapshot-scala" agent skill from https://github.com/golemcloud/golem/tree/main/golem-skills/skills/scala/golem-custom-snapshot-scala into .opencode/skills/golem-custom-snapshot-scala/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "golem-custom-snapshot-scala", 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
golem-custom-snapshot-scala- GitHub stars
- 1.5k
- Token cost
- ~2.1k tokens
- SKILL.md length
- 691 words
- Files
- 1
- Skills in repo
- 289
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Enabling snapshot-based recovery and implementing custom snapshot save/load functions for Scala agents.
- Works in 2 steps: Manual / snapshot-based component… → Fast recovery and oplog compaction — for…
- Adding manual update support
- SKILL.md covers When to Use Snapshotting, Enabling Snapshotting, Automatic JSON Snapshotting… and Custom Snapshot Hooks, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Golem Custom Snapshot Scala is an agent skill from golemcloud/golem. Enabling snapshot-based recovery and implementing custom snapshot save/load functions for Scala agents. Use when adding manual update support, custom state serialization, or — equally importantly — when a long-running agent's oplog is growing large and recovery/replay is becoming slow (heartbeats, polling loops, recurring tasks, frequent state changes). Snapshotting compacts the oplog and lets recovery start from the latest snapshot instead of replaying full history.
Its SKILL.md is about 2.1k 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 Agent Workflows, covering Autonomous loops and Scheduled and recurring tasks. The repository describes itself as: Golem Cloud is the agent-native platform for building AI agents and distributed applications that never lose state, never duplicate work, and never require you to build…
When your agent uses it
- Adding manual update support
- Custom state serialization
- — equally importantly — when a long-running agents oplog is growing large and recovery/replay is becoming slow (heartbeats
- Recurring tasks
Example prompts
- “/golem-custom-snapshot-scala”
Workflow steps
2 steps, taken from the first numbered list in SKILL.md.
- Manual / snapshot-based component updates — required when updating agents between incompatible component versions.
- Fast recovery and oplog compaction — for long-running agents whose oplog grows over time (heartbeats, polling loops, recurring tasks…
What it can do on your machine
Read from SKILL.md and the folder at commit 8bed66c. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are scala).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Golem Custom Snapshot Scala loads about 2.1k tokens when it runs. Until then it costs about 125 tokens; SKILL.md has 691 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 691 words (~2,136 tokens).
“Golem agents can implement snapshotting to support manual (snapshot-based) updates and snapshot-based recovery. The Scala SDK provides two approaches: automatic JSON-based snapshotting via Snapshotted[S] and custom binary hooks.”
- name
- golem-custom-snapshot-scala
Files
Just SKILL.md in golem-skills/skills/scala/golem-custom-snapshot-scala of golemcloud/golem.
Open the folder on GitHubat commit 8bed66c
Compare with similar skills
Golem Custom Snapshot Scala 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 |
|---|---|---|---|---|---|---|
| Golem Custom Snapshot Scala this skillgolemcloud/golem | 1.5k | — | ~2.1k | Automated safety check: Pass | Custom licence | |
| Harness 24hthu-nmrc/OpenHarness | 118 | — | ~3.6k | Automated safety check: Pass | Apache-2.0 | |
| Autonomous Agent Harnessaffaan-m/ECC | 277k | 2 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Recurring Prompt LoopQwenLM/qwen-code | 28k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 | |
| Autonomous Agent Harnessaffaan-m/ECC | 276k | — | ~859 | Automated safety check: Pass | MIT | |
| Harness Long-Running Task LoopChachamaru127/claude-code-harness | 3.2k | — | ~2.3k | Automated safety check: Notes | MIT |
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Related
Categories
Questions about Golem Custom Snapshot Scala
What does Golem Custom Snapshot Scala do?
Enabling snapshot-based recovery and implementing custom snapshot save/load functions for Scala agents. Golem Custom Snapshot Scala is an agent skill from golemcloud/golem. Enabling snapshot-based recovery and implementing custom snapshot save/load functions for Scala agents.
When should I use Golem Custom Snapshot Scala?
Golem Custom Snapshot Scala fits situations like: adding manual update support; custom state serialization; — equally importantly — when a long-running agents oplog is growing large and recovery/replay is becoming slow (heartbeats; recurring tasks.
How do I install Golem Custom Snapshot Scala in Claude Code?
Run `npx skills add golemcloud/golem --skill golem-custom-snapshot-scala -a claude-code`. Or copy the skill folder (golem-skills/skills/scala/golem-custom-snapshot-scala in golemcloud/golem) into .claude/skills/golem-custom-snapshot-scala in your project. Claude Code loads it when a task matches its description.
How do I install Golem Custom Snapshot Scala in Codex?
Run `npx skills add golemcloud/golem --skill golem-custom-snapshot-scala -a codex`. Or copy the skill folder (golem-skills/skills/scala/golem-custom-snapshot-scala in golemcloud/golem) into .agents/skills/golem-custom-snapshot-scala in your project. Codex loads it when a task matches its description.
Can I use Golem Custom Snapshot Scala 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 golemcloud/golem --skill golem-custom-snapshot-scala -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/golem-custom-snapshot-scala, .gemini/skills/golem-custom-snapshot-scala, .github/skills/golem-custom-snapshot-scala and .opencode/skills/golem-custom-snapshot-scala in your project.
What does Golem Custom Snapshot Scala need to run?
SKILL.md names no scripts, command-line tools or credentials: Golem Custom Snapshot Scala is instructions for the agent only.
Does Golem Custom Snapshot Scala 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 Golem Custom Snapshot Scala 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 Golem Custom Snapshot Scala use?
Golem Custom Snapshot Scala has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Golem Custom Snapshot Scala use?
About 2.1k tokens (SKILL.md is roughly 8.5k 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 Golem Custom Snapshot Scala?
Skills that share tags, products or a category with Golem Custom Snapshot Scala: Harness 24h (thu-nmrc/OpenHarness, 118 stars), Autonomous Agent Harness (affaan-m/ECC, 277k stars), Recurring Prompt Loop (QwenLM/qwen-code, 28k stars) and Autonomous Agent Harness (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Golem Custom Snapshot Scala?
golemcloud (a GitHub organization) maintains it in golemcloud/golem, which has 1,508 GitHub stars. The repository holds 289 skills in this directory. The repository was last updated on October 10, 2026.
Source: golemcloud/golem on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.