speckit-git-validate

A check for whether the current Git branch uses one of the project's required feature-branch name formats. Git is a tool for tracking changes to code.

In plain words
What is it for?
Use it before working on a feature to validate the branch name and find its related folder under `specs/`. It also reports when the directory is not a Git repository.
Why use it?
It catches branch names that do not follow the project's naming rules and checks whether a matching specification folder exists.

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/cloudposse/atmos/speckit-git-validate
Any agent
npx skills add cloudposse/atmos --skill speckit-git-validate
Clone the repo
git clone --depth 1 https://github.com/cloudposse/atmos

Made for: Claude Code, Codex.

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 493 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00016 $0.00493
Opus 5 $0.00008 $0.00246
Sonnet 5 $0.00003 $0.00099
Haiku 4.5 $0.00002 $0.00049

Measured 3d ago against content hash 5bc31670a01c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

speckit-git-validate 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 3d 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.

Origin

This is a copy

100% identical to speckit-git-validate — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/speckit-git-validate/SKILL.md · 55 lines

What it actually says

Validate Feature Branch

Validate that the current Git branch follows the expected feature branch naming conventions.

Prerequisites

  • Check if Git is available by running git rev-parse --is-inside-work-tree 2>/dev/null
  • If Git is not available, output a warning and skip validation:
    [specify] Warning: Git repository not detected; skipped branch validation
    

Validation Rules

Get the current branch name:

git rev-parse --abbrev-ref HEAD

The branch name must match one of these patterns:

  1. Sequential: ^[0-9]{3,}- (e.g., 001-feature-name, 042-fix-bug, 1000-big-feature)
  2. Timestamp: ^[0-9]{8}-[0-9]{6}- (e.g., 20260319-143022-feature-name)

Execution

If on a feature branch (matches either pattern):

  • Output: ✓ On feature branch: <branch-name>
  • Check if the corresponding spec directory exists under specs/:
    • For sequential branches, look for specs/<prefix>-* where prefix matches the numeric portion
    • For timestamp branches, look for specs/<prefix>-* where prefix matches the YYYYMMDD-HHMMSS portion
  • If spec directory exists: ✓ Spec directory found: <path>
  • If spec directory missing: ⚠ No spec directory found for prefix <prefix>

If NOT on a feature branch:

  • Output: ✗ Not on a feature branch. Current branch: <branch-name>
  • Output: Feature branches should be named like: 001-feature-name or 20260319-143022-feature-name

Graceful Degradation

If Git is not installed or the directory is not a Git repository:

  • Check the SPECIFY_FEATURE environment variable as a fallback
  • If set, validate that value against the naming patterns
  • If not set, skip validation with a warning
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. 3d ago First seen · 55 lines · 16 tokens per session scan A 5bc31670a01c

Subscribe to this mod's changes

speckit-git-validate is a skill published in the GitHub repository cloudposse/atmos (1,367 stars, last pushed today), licensed Apache-2.0. It adds 16 tokens to every session and 493 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to speckit-git-validate, differing in 1 line, and is treated as a copy.

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