Borrowing it
Nothing to install: this file belongs to Draculabo/AntigravityManager. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Draculabo/AntigravityManager/main/.agent/skills/openspec-sync-specs/SKILL.mdgit clone --depth 1 https://github.com/Draculabo/AntigravityManagerWrote 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/draculabo/antigravitymanager/openspec-sync-specs)<a href="https://agentmods.dev/skills/draculabo/antigravitymanager/openspec-sync-specs"><img src="https://agentmods.dev/badge/skills/draculabo/antigravitymanager/openspec-sync-specs.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00038 | $0.01025 |
| Opus 5 | $0.00019 | $0.00513 |
| Sonnet 5 | $0.00008 | $0.00205 |
| Haiku 4.5 | $0.00004 | $0.00103 |
Grade A, and why
openspec-sync-specs 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 yesterday.
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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- yesterday First seen · 145 lines · 38 tokens per session scan A 4d8d9dd2e423
openspec-sync-specs is a skill published in the GitHub repository Draculabo/AntigravityManager (2,146 stars, last pushed 5d ago), with no licence file. It adds 38 tokens to every session and 1,025 once invoked, about $0.0002 per session on Opus 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.
Other skills, from other repositories
loop
Run a prompt or skill in this session on a recurring or variable interval (e.g. /loop 5m /foo).
review-security
Review code changes with Security Review subagent.
review
Review code changes with the Bugbot or Security Review subagent.
ag-sdd
Activates the Anti-Gravity Spec-Driven Development (ag-sdd) workflow. Use this skill when the user asks to implement a feature, fix a bug, or write code in a repository that uses ag-sdd. It enforces a strict 4-phase SDD lifecycle: Discovery, Spec Generation, Sequential Execution, and Quality Signoff.
split-to-prs
Split current work into small reviewable PRs. Use when the user asks to split a chat, set of changes, branch, or PR.
babysit
Keep a PR merge-ready by triaging comments, resolving clear conflicts, and fixing CI in a loop.