sync-main

A workflow for updating the repository's default branch and merging those updates into the current branch or open pull-request branches.

In plain words
What is it for?
Use it on a feature branch to sync from the repository's default branch, or use its all mode to update all open pull-request branches.
Why use it?
It helps keep development branches aligned with the latest shared code while checking branch and working-tree requirements first.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/dryvist/claude-code-plugins/sync-main
Any agent
npx skills add dryvist/claude-code-plugins --skill sync-main
Clone the repo
git clone --depth 1 https://github.com/dryvist/claude-code-plugins

Made for: Claude Code, Codex.

Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,227 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00072 $0.01227
Opus 5 $0.00036 $0.00613
Sonnet 5 $0.00014 $0.00245
Haiku 4.5 $0.00007 $0.00123

Measured yesterday against content hash f7251392ad86, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sync-main 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.

git-workflows/skills/sync-main/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sync Main

Update the local default branch from remote and merge it into the current working branch, or all open PR branches when using the all parameter.

The skill keeps the name sync-main for continuity, but it syncs the repo's actual default branch, not a literal main. On a trunk repo that is the same thing; on a git-flow repo the default branch is develop, and this skill treats develop as the sync target throughout.

Scope Parameter

Usage Scope
/sync-main Current branch only
/sync-main all All open PR branches

CURRENT REPOSITORY ONLY - This command never crosses into other repositories.

Prerequisites

  • You must be in a feature branch worktree (not on the default branch itself)
  • The current branch should have no uncommitted changes

Resolve the Default Branch (Both Modes)

DEFAULT_BRANCH=$(gh repo view --json defaultBranchRef --jq '.defaultBranchRef.name')

See /gh-cli-patterns (github-workflows) Canonical Default-Branch Detection for what main vs develop implies. Use <DEFAULT_BRANCH> everywhere below.

Single Branch Mode (Default)

  1. Verify state: git branch --show-current, git status --porcelain
    • STOP if on <DEFAULT_BRANCH> or uncommitted changes
  2. Sync default branch: git fetch --all --prune --force && git pull (in the <DEFAULT_BRANCH> worktree)
  3. Check for updates: git fetch origin --force <DEFAULT_BRANCH>
  4. Report: Show commits behind with git log --oneline HEAD..origin/<DEFAULT_BRANCH> (informational only)
  5. Merge: git merge origin/<DEFAULT_BRANCH> --no-edit
    • If already up-to-date: skip to step 7 and report
    • If merge succeeds cleanly: continue to step 6
    • If conflicts occur: STOP, do not push. Report conflict status and follow the Conflict Resolution section below
  6. Push (only if merge succeeded cleanly): git push origin $(git branch --show-current)
  7. Report: branch, <DEFAULT_BRANCH> SHA, merge status

Read the full file on GitHub · 110 lines

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. yesterday First seen · 110 lines · 72 tokens per session scan A f7251392ad86

Subscribe to this mod's changes

sync-main is a skill published in the GitHub repository dryvist/claude-code-plugins (3 stars, last pushed yesterday), licensed Apache-2.0. It adds 72 tokens to every session and 1,227 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 2026-08-31.

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