Scion is a multi-agent orchestration platform that runs several isolated agents concurrently in containers, optionally giving each one its own workspace and credentials. It is used to coordinate coding and other research or operations tasks across local machines, remote virtual machines, and Kubernetes clusters. Catalogue add-ons provide workflows and controls for operating Scion.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add GoogleCloudPlatform/scion --skill git-operationsgit clone --depth 1 https://github.com/GoogleCloudPlatform/scionWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/googlecloudplatform/scion/git-operations)<a href="https://agentmods.dev/skills/googlecloudplatform/scion/git-operations"><img src="https://agentmods.dev/badge/skills/googlecloudplatform/scion/git-operations/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/googlecloudplatform/scion/git-operations"><img src="https://agentmods.dev/badge/skills/googlecloudplatform/scion/git-operations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 19 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
- high Tool Misuse · line 22 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00050 | $0.00482 |
| Opus 5.5 | $0.00020 | $0.00193 |
| Sonnet 5.5 | $0.00010 | $0.00096 |
| Haiku 4.5 | $0.00005 | $0.00048 |
Grade A, and why
git-operations scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Git Operations
General git safety rules for Scion agents. These apply regardless of
workspace sharing mode — for mode-specific guidance (worktree isolation,
shared-plain index hazards, clone-per-agent remotes), see the git-sandbox
skill.
Working Tree Reset Safety
When cleaning a working tree, use git clean -fd, not git clean -fdx.
git clean -fdremoves untracked files but respects.gitignore—.scion/, agent state, and ignored directories survive.git clean -fdxdeliberately defeats.gitignoreand deletes everything not tracked by git, including.scion/,downloads/, and any local state.
The -x flag is not a stronger clean — it is a different operation. Default to -fd; use -x only with a specific reason and after verifying nothing irreplaceable is in an ignored directory.
downloads/ is an inbox, not storage. Files downloaded into your container are visible only inside it and invisible to every other agent. Move anything worth keeping to /scion-volumes/scratchpad/ (shared across all agents) promptly. A downloads/ file that has not been drained to the scratchpad is one command from gone.
Rebase After Deletion
When a PR deletes a file, a rebase will tell you about edits to that file and will not tell you about new references to it.
A concurrent edit to the deleted file raises a modify/delete conflict and halts the rebase — that case is handled, because it demands a decision. A concurrent edit that adds a reference to the deleted file from a different file produces no conflict at all: git sees two disjoint changes, reports "Successfully rebased," and leaves a dangling reference.
After rebasing a deletion, grep for the deleted name. Any inbound-reference count taken before the rebase is stale by construction.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 35 lines · 50 tokens per session scan A 6529354c6a9d
git-operations is a skill published in the GitHub repository GoogleCloudPlatform/scion (1,900 stars, last pushed yesterday), licensed Apache-2.0. It adds 50 tokens to every session and 482 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
prowler-commit
Creates professional git commits following conventional-commits format. Trigger: When creating commits, after completing code changes, when user asks to commit.
gh-auth-isolation
Safely manage multiple GitHub identities (EMU + personal) in agent workflows.
comet-github
A routing guide for Comet-related GitHub work. It directs requests about pull requests, issues, CI failures, ideas, and fixes to the appropriate review or implementation process.
release-helper
Ensures configuration and code changes are released correctly. Use PROACTIVELY whenever you edit config.json, change any setting, or fix a configuration bug in this project, so the change reaches production.
github-skill
Work with GitHub via the gh CLI — clone repositories, create/list/merge pull requests, create/list issues, and run any other gh command (API calls, workflow runs, releases, repo administration). List operations return parsed JSON.
merge-pr
Merge a pull request with status checks, squash merge, and branch cleanup. Handles worktree contexts.