A tool for managing Julia programming-language packages in the current project. It can add, remove, inspect, update, install, resolve, test, develop, or free packages.

Use it to install dependencies, update or remove packages, create local development links, resolve versions, instantiate an environment, and run package tests.

It avoids manually editing dependency files and provides the package-manager actions needed to keep a Julia environment consistent.

julia-pkg — Skill for Claude Code by samtalki/AgentREPL.jl

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 samtalki/AgentREPL.jl --skill julia-pkg

Clone the repo

git clone --depth 1 https://github.com/samtalki/AgentREPL.jl

Made for: Claude Code.

Or install julia, the plugin that ships this one along with the rest of its 10 skills, 1 hook, 1 MCP server.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/samtalki/agentrepl.jl/julia-pkg/github.svg)](https://agentmods.dev/skills/samtalki/agentrepl.jl/julia-pkg)

Your own site

<a href="https://agentmods.dev/skills/samtalki/agentrepl.jl/julia-pkg"><img src="https://agentmods.dev/badge/skills/samtalki/agentrepl.jl/julia-pkg/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/samtalki/agentrepl.jl/julia-pkg"><img src="https://agentmods.dev/badge/skills/samtalki/agentrepl.jl/julia-pkg.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 425 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.

Model	Per session	Once invoked
Fable 5.1	$0.00021	$0.00425
Opus 5.5	$0.00008	$0.00170
Sonnet 5.5	$0.00004	$0.00085
Haiku 4.5	$0.00002	$0.00042

Measured 1mo ago against content hash 59bc32fccfac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

julia-pkg 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 1mo 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.

claude-plugin/skills/julia-pkg/SKILL.md · 47 lines

What it actually says

Julia Package Management

Manage Julia packages in the current environment.

Arguments

action - One of: add, rm, status, update, instantiate, resolve, test, develop, free
packages - Package names or paths (required for add/rm/develop/free, optional for update/test)

Instructions

Parse the user's arguments to determine the action and packages:

User Input	Action	Packages
`add JSON`	add	JSON
`add JSON DataFrames CSV`	add	JSON, DataFrames, CSV
`rm OldPackage`	rm	OldPackage
`status`	status	(none)
`update`	update	(none - updates all)
`update JSON`	update	JSON
`instantiate`	instantiate	(none)
`resolve`	resolve	(none)
`test`	test	(none - tests current project)
`test MyPackage`	test	MyPackage
`develop ./MyLocalPkg`	develop	./MyLocalPkg
`free MyPackage`	free	MyPackage

Call pkg with the appropriate action and packages parameters.

Notes

After adding packages, remind the user to load them with using PackageName
The instantiate action installs dependencies from Project.toml/Manifest.toml
The test action runs Pkg.test() - can be slow for large test suites
The develop action puts a package in development mode (uses local code)
The free action exits development mode (returns to registry version)
After develop, consider using revise(action="revise") to hot-reload changes

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.

1mo ago First seen · 47 lines · 21 tokens per session scan A 59bc32fccfac

Subscribe to this mod's changes

julia-pkg is a skill published in the GitHub repository samtalki/AgentREPL.jl (7 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 21 tokens to every session and 425 once invoked, about $0.0001 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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