sync

sync is a skill for Claude Code, Codex from mrtblount/Spec-to-Ship. It costs 52 tokens per session (1,693 once invoked), scanned A, original, MIT.

A workflow for sending finalized software specifications and task lists to project-management systems.

In plain words
What is it for?
It is for turning `TASKS.md` into GitHub issues, publishing `SPEC.md` as a Linear document or initiative, and setting up two-way issue syncing between GitHub and Linear.
Why use it?
It keeps planning documents and tracked work aligned across GitHub Projects, GitHub Issues, and Linear, a tool for managing software projects.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Good fit It is for turning TASKS.md into GitHub issues, publishing SPEC.md as a Linear document or initiative, and setting up two-way issue syncing between GitHub and Linear.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrtblount/spec-to-ship/sync
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 mrtblount/Spec-to-Ship --skill sync
Clone the repo
git clone --depth 1 https://github.com/mrtblount/Spec-to-Ship

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 sync

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrtblount/spec-to-ship/sync/github.svg)](https://agentmods.dev/skills/mrtblount/spec-to-ship/sync)
Your own site
<a href="https://agentmods.dev/skills/mrtblount/spec-to-ship/sync"><img src="https://agentmods.dev/badge/skills/mrtblount/spec-to-ship/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.

agentmods 80×15 button for sync

Your own site · 80×15
<a href="https://agentmods.dev/skills/mrtblount/spec-to-ship/sync"><img src="https://agentmods.dev/badge/skills/mrtblount/spec-to-ship/sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,693 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 $0.00052 $0.01693
Opus 5.5 $0.00021 $0.00677
Sonnet 5.5 $0.00010 $0.00339
Haiku 4.5 $0.00005 $0.00169

Measured 2mo ago against content hash 293aaa140a7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 2mo 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.

spec-driven-dev/sub-skills/sync/SKILL.md · 204 lines

How it starts

The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tool availability:

  • GitHub CLI (gh) for creating projects and issues
  • Linear MCP (mcp__claude_ai_Linear__*) for creating Linear documents and issues
  • Both support programmatic creation and updates

Sync architecture:

SPEC.md ──────→ Linear Document (PRD / Initiative)
TASKS.md ─────→ GitHub Issues ←──→ Linear Issues (bidirectional)
                     ↕
              GitHub Project Board

Linear has a native GitHub integration that handles bidirectional sync between GitHub Issues and Linear Issues. We don't need to build that — just configure it.

Also: Does a GitHub Project or Linear project already exist for this, or should I create new ones?"

AWAIT: User choice STORE: sync_targets, existing_project_ids

</step>

<step id="2" name="GitHub Projects Setup">

IF sync_targets includes GITHUB:

IF existing GitHub Project: VERIFY: Project exists and is accessible USE: existing project ID ELSE: CREATE project: gh project create --title "{Project Name}" --owner {user/org}

FOR each task in TASKS.md: CREATE GitHub Issue: gh issue create
--title "T{NNN}: {task title}"
--body "{task description with validation criteria}"
--label "{layer}"
--project "{project name}"

MAP dependencies:
  - Add "Depends on #X" in issue body for each dependency
  - Add labels for layer (foundation, core, feature, integration, polish)
  - Add labels for complexity (low, medium, high)

ORGANIZE project board: - Create columns/status fields: Backlog, Ready, In Progress, Review, Done - Place foundation tasks in "Ready" - Place dependent tasks in "Backlog" - Add priority field matching task execution order

REPORT: "Created {count} issues in GitHub Project: {project_url} Board organized by execution order with dependency tracking."

</step>

<step id="3" name="Linear Setup">

IF sync_targets includes LINEAR:

DETERMINE Linear team: Use mcp__claude_ai_Linear__list_teams to find available teams ASK user which team if multiple exist

CREATE Linear document from SPEC.md: Use mcp__claude_ai_Linear__create_document with: - Title: "{Project Name} — Product Specification" - Content: Contents of SPEC.md (converted to Linear-compatible format)

IF sync_targets is LINEAR_ONLY (no GitHub): FOR each task in TASKS.md: CREATE Linear issue: Use mcp__claude_ai_Linear__save_issue with: - Title: "T{NNN}: {task title}" - Description: task description + validation criteria - Priority: based on layer (foundation=urgent, core=high, feature=medium, polish=low) - Labels: layer name, complexity

REPORT: "Created SPEC.md as Linear document: {doc_url} {count} issues created in Linear project."

</step>

<step id="4" name="Bidirectional Sync Setup (GitHub ↔ Linear)">

IF sync_targets includes BOTH GitHub AND Linear:

EXPLAIN to user: "## Setting Up GitHub ↔ Linear Sync

Linear has a native GitHub integration that handles bidirectional sync.
Here's what to do:

**One-time setup (takes ~2 minutes):**

1. Go to Linear → Settings → Integrations → GitHub
2. Connect your GitHub account/organization
3. Select the repository for {project_name}
4. Configure sync settings:
   - ✅ Sync issues bidirectionally
   - ✅ Auto-create Linear issues from GitHub issues
   - ✅ Sync status changes (closing a GitHub issue closes the Linear issue)
   - ✅ Sync comments
   - ✅ Sync labels

**How it works after setup:**
- Issues created in GitHub → automatically appear in Linear
- Status changes in either tool → synced to the other
- Comments on GitHub issues → appear in Linear and vice versa
- Closing an issue in either place → closes it in both

**What this means for your workflow:**
- Claude Code updates GitHub Issues via `gh` CLI as tasks complete
- Those updates automatically flow to Linear
- You or collaborators can manage priorities in Linear's UI
- The senior dev in your accelerator can watch progress in Linear

Would you like me to walk you through the setup now, or do you want
to handle it later?"

IF user wants walkthrough now: Use browser automation tools to guide through Linear settings OR provide step-by-step with screenshots via Linear's docs

AWAIT: User confirms sync is configured

</step>

Read the full file on GitHub · 204 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. 2mo ago First seen · 204 lines · 52 tokens per session scan A 293aaa140a7f

Subscribe to this mod's changes

sync is a skill published in the GitHub repository mrtblount/Spec-to-Ship (2 stars, last pushed 3mo ago), licensed MIT. It adds 52 tokens to every session and 1,693 once invoked, about $0.0002 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 2026-08-31.

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