jk

jk is a skill for Claude Code, Codex from avivsinai/skills-marketplace. It costs 26 tokens per session (750 once invoked), scanned A, a copy of jk, MIT.

A command-line interface for Jenkins, a service that automatically builds, tests, and deploys software. It manages Jenkins jobs, pipelines, build runs, logs, stored files, credentials, machines, and queues.

In plain words
What is it for?
Use it to create or configure jobs, start and inspect builds, read logs and artifacts, manage credentials and agents, and check queues.
Why use it?
It lets developers and operators manage Jenkins from scripts or a terminal instead of navigating the web interface. This is useful for repeatable administration and automation.

Skill for Claude CodeCodex

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

Good fit Use it to create or configure jobs, start and inspect builds, read logs and artifacts, manage credentials and agents, and check queues.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/avivsinai/skills-marketplace/jk
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 avivsinai/skills-marketplace --skill jk
Clone the repo
git clone --depth 1 https://github.com/avivsinai/skills-marketplace

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 jk

README.md
[![agentmods](https://agentmods.dev/badge/skills/avivsinai/skills-marketplace/jk/github.svg)](https://agentmods.dev/skills/avivsinai/skills-marketplace/jk)
Your own site
<a href="https://agentmods.dev/skills/avivsinai/skills-marketplace/jk"><img src="https://agentmods.dev/badge/skills/avivsinai/skills-marketplace/jk/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 jk

Your own site · 80×15
<a href="https://agentmods.dev/skills/avivsinai/skills-marketplace/jk"><img src="https://agentmods.dev/badge/skills/avivsinai/skills-marketplace/jk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 750 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 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 5.1 $0.00026 $0.00750
Opus 5 $0.00013 $0.00375
Sonnet 5 $0.00005 $0.00150
Haiku 4.5 $0.00003 $0.00075

Measured 5d ago against content hash ad5eb8e3d212, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

jk 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 5d 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 jk — 0 lines 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.

plugins/jk/skills/jk/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Jenkins CLI

Use jk for Jenkins reads and changes. Inspect jk --help or a subcommand's help when syntax is uncertain. Check installation or version only when the command is unavailable or a requested feature has a known minimum version.

Route the task

Read only the rule that matches the request:

For exact flags and output modes, search references/commands.md for the subcommand.

Shared operating rules

  • Use the active context unless the user names another controller. Verify the target context before a state-changing or security-sensitive operation.
  • Prefer structured output (--json or --yaml) when another tool or script will consume the result.
  • Inspect a job's declared parameters before starting a parameterized run; do not guess names or values.
  • Treat job configuration, credentials, nodes, plugins, queue cancellation, and run deletion as state-changing operations. Show the resolved target and follow the user's authorization.
  • Never print, store, or echo Jenkins tokens or credential secrets. Browser SSO access tokens are not Jenkins API tokens; follow rules/auth.md.
  • Do not weaken TLS verification unless the user explicitly chooses that risk.

Common reads

jk job ls
jk job view team/app
jk run ls team/app
jk run view team/app 128
jk log team/app 128 --follow
jk artifact ls team/app 128
jk test report team/app 128
jk queue ls

Read the full file on GitHub · 82 lines

Files

What ships with it

12 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago Changed · -369 lines · -52 tokens per session ad5eb8e3d212
  2. 12d ago First seen · 451 lines · 78 tokens per session scan A 9a44dfe2c00d

Subscribe to this mod's changes

jk is a skill published in the GitHub repository avivsinai/skills-marketplace (2 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 750 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 jk, differing in 0 lines, and is treated as a copy.

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