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 OutlineDriven/odin-claude-plugin --skill xcode-project-syncgit clone --depth 1 https://github.com/OutlineDriven/odin-claude-pluginWrote 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/outlinedriven/odin-claude-plugin/xcode-project-sync)<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/xcode-project-sync"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/xcode-project-sync/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/outlinedriven/odin-claude-plugin/xcode-project-sync"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/xcode-project-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00079 | $0.01307 |
| Opus 5.5 | $0.00032 | $0.00523 |
| Sonnet 5.5 | $0.00016 | $0.00261 |
| Haiku 4.5 | $0.00008 | $0.00131 |
Grade A, and why
xcode-project-sync 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.
How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Xcode project sync
Contract
| Field | Bound contract |
|---|---|
| Trigger | The user runs /xcode-project-sync after project edits to regenerate the Xcode project from its declarative manifest. |
| Authority | Reversible-local: write only the regenerated xcodeproj built from project.yml; roll back via git restore of the xcodeproj. Never edit handwritten Swift or hand-patch generated files. |
| Side effect | Regenerates the xcodeproj from project.yml without modifying handwritten Swift files. |
| Done | The regenerated project builds: swift build and xcodebuild -scheme <SchemeName> both succeed. |
Inputs
project.ymlin the app root. Must exist; stop if absent.- The app's Xcode scheme name. Must be supplied or discoverable from the regenerated project.
- The gstack installation root: explicit
GSTACK_ROOTenv var, or the default~/.claude/skills/gstack. Must exist and carry aVERSIONmarker file.
Procedure
-
Preconditions. Verify all three prerequisites before proceeding:
project.ymlexists in the app root. If absent, return BLOCKED with "missing project.yml".- The gstack root resolves: check
$GSTACK_ROOTif set, otherwise use~/.claude/skills/gstack. The directory must exist and contain aVERSIONmarker file. If the root is missing or has no VERSION marker, return BLOCKED with "missing or invalid gstack root" and name the checked path. - The regenerator executable resolves: look for
$GSTACK_ROOT/bin/gstack-project-sync, then$GSTACK_ROOT/bin/gstack, then any executable in$GSTACK_ROOT/bin/whose name containsprojectorsync. If no regenerator is found, return BLOCKED with "regenerator not found" and list the checked paths.
Done when: all three preconditions are verified, or BLOCKED is returned with the missing prerequisite named.
-
Freshness check. Read the
.gstack-versionmarker in the generated xcodeproj and compare it to$GSTACK_ROOT/VERSION. Compare the currentproject.ymlcontent against the state recorded at the last regeneration (if a hash or timestamp is stored in the xcodeproj or a sidecar file). If both the gstack version and the project.yml state are unchanged, exit early with "already up to date". Done when: the freshness check is complete and either early-exit is taken or regeneration is confirmed necessary.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 54 lines · 79 tokens per session scan A 8c2718e04573
xcode-project-sync is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (37 stars, last pushed 20d ago), licensed Apache-2.0. It adds 79 tokens to every session and 1,307 once invoked, about $0.0003 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 2026-09-04.
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