Official agent skill

Start Dev Cycle

by DataDog in DataDog/jmxfetch

Starts a new jmxfetch development cycle by bumping to the next SNAPSHOT version in pom.xml, README.md, and test.yml, and adding a new CHANGELOG.md placeholder.

OfficialCustom licenceAuto-check passedDevelopment

Install Start Dev Cycle

skills CLI
$ npx skills add DataDog/jmxfetch --skill start-dev-cycle -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install DataDog/jmxfetch start-dev-cycle --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/DataDog/jmxfetch.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/start-dev-cycle .claude/skills/start-dev-cycle && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
start-dev-cycle
GitHub stars
109
Token cost
~512 tokens
SKILL.md length
149 words
Files
1
Skills in repo
3
Repo updated
First seen
Licence
Custom licence

At a glance

Starts a new jmxfetch development cycle by bumping to the next SNAPSHOT version in pom.xml, README.md, and test.yml, and adding a new CHANGELOG.md placeholder.

  • Works in 3 steps: Read current state → Update all four files → Commit, push and open PR
  • Tasks that involve Changelog and release notes
  • SKILL.md covers Step 1 — Read current state, Step 2 — Update all four files and Step 3 — Commit, push and open…
  • Calls git, gh and docker

What it does

Start Dev Cycle is an agent skill from DataDog/jmxfetch, published by the product's own GitHub organization. Starts a new jmxfetch development cycle by bumping to the next SNAPSHOT version in pom.xml, README.md, and test.yml, and adding a new CHANGELOG.md placeholder. Pass the next snapshot version as the argument (e.g. /start-dev-cycle 0.52.1-SNAPSHOT).

Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Changelog and release notes and Technical documentation.

When your agent uses it

  • Tasks that involve Changelog and release notes
  • Tasks that involve Technical documentation

Example prompts

  • “Use the start-dev-cycle skill to start a new jmxfetch development cycle by bumping to the next SNAPSHOT version in pom.xml, README.md, and test.yml…”
  • “/start-dev-cycle”

Requirements

  • Docker
  • Pre-approved tools (allowed-tools): Read, Edit, Bash(git add *), Bash(git commit *), Bash(git push *), Bash(gh pr create *)

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. Read current state
  2. Update all four files
  3. Commit, push and open PR

What it can do on your machine

Read from SKILL.md and the folder at commit 859d091. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Edit
    • Bash(git add *)
    • Bash(git commit *)
    • Bash(git push *)
    • Bash(gh pr create *)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git
    • gh
    • docker

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, gh and docker, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Start Dev Cycle loads about 512 tokens when it runs. Until then it costs about 66 tokens; SKILL.md has 149 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~66
When it runs · the whole SKILL.md, loaded when a task matches
~512

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 149 words (~512 tokens).

“You are starting a new jmxfetch development cycle. The new SNAPSHOT version is: $ARGUMENTS”

— opening of SKILL.md by DataDog, Custom licence
name
start-dev-cycle
allowed-tools
Read, Edit, Bash(git add *), Bash(git commit *), Bash(git push *), Bash(gh pr create *)
argument-hint
<next-snapshot-version>

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/start-dev-cycle of DataDog/jmxfetch.

Open the folder on GitHubat commit 859d091

Compare with similar skills

Start Dev Cycle next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Start Dev Cycle compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Start Dev Cycle this skillDataDog/jmxfetch109—~512Automated safety check: PassCustom licence
Simple Englishmoeru-ai/airi50k2 repos~4.6kAutomated safety check: PassMIT
Ccb GitHubSeemSeam/claude_codex_bridge3.6k—~4.9kAutomated safety check: PassCustom licence
Golang Documentationunxed/f42413 repos~3.5kAutomated safety check: PassMIT
Simple Englishropensci/ckanr1043 repos~2kAutomated safety check: PassMIT
Opik Documentation Patternscomet-ml/opik22k—~1.3kAutomated safety check: PassApache-2.0

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Categories

Questions about Start Dev Cycle

What does Start Dev Cycle do?

Starts a new jmxfetch development cycle by bumping to the next SNAPSHOT version in pom.xml, README.md, and test.yml, and adding a new CHANGELOG.md placeholder. Start Dev Cycle is an agent skill from DataDog/jmxfetch, published by the product's own GitHub organization.md placeholder.

When should I use Start Dev Cycle?

Start Dev Cycle fits situations like: tasks that involve Changelog and release notes; tasks that involve Technical documentation.

How do I install Start Dev Cycle in Claude Code?

Run `npx skills add DataDog/jmxfetch --skill start-dev-cycle -a claude-code`. Or copy the skill folder (.claude/skills/start-dev-cycle in DataDog/jmxfetch) into .claude/skills/start-dev-cycle in your project. Claude Code loads it when a task matches its description.

How do I install Start Dev Cycle in Codex?

Run `npx skills add DataDog/jmxfetch --skill start-dev-cycle -a codex`. Or copy the skill folder (.claude/skills/start-dev-cycle in DataDog/jmxfetch) into .agents/skills/start-dev-cycle in your project. Codex loads it when a task matches its description.

Can I use Start Dev Cycle in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add DataDog/jmxfetch --skill start-dev-cycle -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/start-dev-cycle, .gemini/skills/start-dev-cycle, .github/skills/start-dev-cycle and .opencode/skills/start-dev-cycle in your project.

What does Start Dev Cycle need to run?

Going by SKILL.md and its folder, Start Dev Cycle needs the command-line tools its instructions call (git, gh and docker). Our summary lists: Docker. Its frontmatter pre-approves these tools: Read, Edit, Bash(git add *), Bash(git commit *), Bash(git push *), Bash(gh pr create *).

Does Start Dev Cycle access the network?

SKILL.md contains no URLs. Its commands use git, gh and docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Start Dev Cycle safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Start Dev Cycle use?

Start Dev Cycle has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Start Dev Cycle use?

About 512 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Start Dev Cycle?

Skills that share tags, products or a category with Start Dev Cycle: Simple English (moeru-ai/airi, 50k stars), Ccb GitHub (SeemSeam/claude_codex_bridge, 3.6k stars), Golang Documentation (unxed/f4, 241 stars) and Simple English (ropensci/ckanr, 104 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Start Dev Cycle?

DataDog (a GitHub organization, an official publisher) maintains it in DataDog/jmxfetch, which has 109 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on July 31, 2026.

Source: DataDog/jmxfetch on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.