run-sync-check

run-sync-check is a skill for Claude Code, Codex from Chemaclass/agnostic-ai. It costs 30 tokens per session (252 once invoked), scanned A, original, MIT.

A check for differences between source specifications and the files generated from them.

In plain words
What is it for?
Use it after changing specifications or adapters to inspect the diff and decide whether to regenerate files.
Why use it?
It shows whether generated files are out of date and helps identify whether the source or an adapter caused the difference.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it after changing specifications or adapters to inspect the diff and decide whether to regenerate files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chemaclass/agnostic-ai/run-sync-check
Install

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.

Any agent
npx skills add Chemaclass/agnostic-ai --skill run-sync-check
Clone the repo
git clone --depth 1 https://github.com/Chemaclass/agnostic-ai

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for run-sync-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/chemaclass/agnostic-ai/run-sync-check/github.svg)](https://agentmods.dev/skills/chemaclass/agnostic-ai/run-sync-check)
Your own site
<a href="https://agentmods.dev/skills/chemaclass/agnostic-ai/run-sync-check"><img src="https://agentmods.dev/badge/skills/chemaclass/agnostic-ai/run-sync-check/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.

agentmods 80×15 button for run-sync-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/chemaclass/agnostic-ai/run-sync-check"><img src="https://agentmods.dev/badge/skills/chemaclass/agnostic-ai/run-sync-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 252 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00252
Opus 5 $0.00015 $0.00126
Sonnet 5 $0.00006 $0.00050
Haiku 4.5 $0.00003 $0.00025

Measured 9d ago against content hash 45f1f773801d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

run-sync-check 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 9d 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.

.agnostic-ai/skills/run-sync-check/SKILL.md · 24 lines

What it actually says

run-sync-check

Verifies that emitted target files match what the current specs would produce.

Steps

  1. Build the binary if changed: make build.
  2. Run ./agnostic-ai sync --check. Exit 0 means the working tree matches the bundle.
  3. If exit is non-zero, the tool prints a unified diff per drifting file.
  4. Decide:
    • Source edited, emitted file lags -> run agnostic-ai sync to refresh.
    • Adapter edited, emitted files would change -> intentional. Run agnostic-ai sync and review the diff in git diff.
    • Neither edited but check still drifts -> capture mode skipped reading existing files. Re-run with agnostic-ai sync and inspect.
  5. Never edit emitted files by hand to silence the check. The next sync rewrites them.

CI

sync --check is the gate. A drift exits 1 and fails the workflow. The fix is always to re-sync locally and commit, never to edit the emitted file.

Changes

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.

  1. 9d ago First seen · 24 lines · 30 tokens per session scan A 45f1f773801d

Subscribe to this mod's changes

run-sync-check is a skill published in the GitHub repository Chemaclass/agnostic-ai (11 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 252 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 2026-08-30.