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 comma-compliance/arc-relay --skill arc-syncgit clone --depth 1 https://github.com/comma-compliance/arc-relayWrote 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/comma-compliance/arc-relay/arc-sync)<a href="https://agentmods.dev/skills/comma-compliance/arc-relay/arc-sync"><img src="https://agentmods.dev/badge/skills/comma-compliance/arc-relay/arc-sync.svg" alt="Measured on agentmods" 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 | $0.00083 | $0.01110 |
| Opus 5 | $0.00042 | $0.00555 |
| Sonnet 5 | $0.00017 | $0.00222 |
| Haiku 4.5 | $0.00008 | $0.00111 |
Grade A, and why
arc-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 7d 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Server Management via arc-sync
MCP servers in this environment are managed by Arc Relay. Never edit .mcp.json or .codex/config.toml directly - use arc-sync commands.
First-run check
Before running any arc-sync command, check if arc-sync is configured:
-
Run
arc-sync status --json 2>/dev/null. If it fails or returns{"error": ...}:- Check if
arc-syncbinary exists:which arc-sync - If not installed: tell the user to ask their admin for an install command (invite token), or run
arc-sync initif they have credentials - If installed but not configured: run
arc-sync initto set up
- Check if
-
If status succeeds but shows missing Claude integration, suggest:
arc-sync setup-claudefor personal skill installationarc-sync setup-codexfor personal Codex CLI instructionsarc-sync setup-projectfor team-shared project instructions
Current project status
!arc-sync status --json 2>/dev/null || echo '{"error": "arc-sync not installed or not configured - run: arc-sync init"}'
Commands
| Command | Description |
|---|---|
arc-sync |
Interactive sync - add new relay servers to project |
arc-sync list |
Show all servers (use --json for machine-readable) |
arc-sync add <name> |
Add a specific server to this project |
arc-sync remove <name> |
Remove a server from this project |
arc-sync reset |
Clear the skip list for this project |
arc-sync status |
Show config and project details |
arc-sync setup-claude |
Install Claude Code skill and CLAUDE.md instructions |
arc-sync setup-codex |
Install Codex CLI AGENTS.md instructions |
arc-sync setup-project |
Add MCP instructions to project .claude/CLAUDE.md and AGENTS.md |
arc-sync server add <name> --type remote <url> |
Register a remote MCP server on the relay |
arc-sync server add <name> --type stdio --build python --package <pkg> |
Register an auto-build server |
arc-sync server add <name> --type stdio --image <img> |
Register a Docker stdio server |
arc-sync server add <name> --type http --image <img> --port <p> |
Register a Docker HTTP server |
arc-sync server remove <name> |
Delete a server from the relay |
arc-sync server start <name> |
Start a relay server |
arc-sync server stop <name> |
Stop a relay server |
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.
- 7d ago First seen · 89 lines · 83 tokens per session scan A 286c69beb8fb
arc-sync is a skill published in the GitHub repository comma-compliance/arc-relay (57 stars, last pushed 3d ago), licensed MIT. It adds 83 tokens to every session and 1,110 once invoked, about $0.0004 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 2026-08-30.
Other skills, from other repositories
avp-trust-enforcement
AgentVeil action-control workflows for AI agent systems. Evaluate risky actions with Runtime Gate, route human approvals, resume approved execution, fetch signed receipts, inspect agent public profiles, check advisory reputation, submit signed attestations, discover agents by capability, and verify audit evidence…
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
local-ai-agents
Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
next-partial-prefetching-adoption
Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…
chronicle
Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…