julia-log

julia-log is a skill for Claude Code, Codex from samtalki/AgentREPL.jl. It costs 13 tokens per session (259 once invoked), scanned A, original, Apache-2.0.

A control for a separate viewer that displays Julia program output as it is produced.

In plain words
What is it for?
Choosing automatic, tmux, file, or disabled log viewing for standard output and error output from Julia evaluations.
Why use it?
It helps you monitor long-running calculations and see progress without waiting for the entire command to finish.

Skill for Claude CodeCodex

Part of the julia plugin — 10 skills, 1 hook, 1 MCP server shipped together

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/samtalki/agentrepl.jl/julia-log
Any agent
npx skills add samtalki/AgentREPL.jl --skill julia-log
Clone the repo
git clone --depth 1 https://github.com/samtalki/AgentREPL.jl

Made for: Claude Code, Codex.

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.

agentmods badge for julia-log

README.md
[![agentmods](https://agentmods.dev/badge/skills/samtalki/agentrepl.jl/julia-log.svg)](https://agentmods.dev/skills/samtalki/agentrepl.jl/julia-log)
Your own site
<a href="https://agentmods.dev/skills/samtalki/agentrepl.jl/julia-log"><img src="https://agentmods.dev/badge/skills/samtalki/agentrepl.jl/julia-log.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 259 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00013 $0.00259
Opus 5 $0.00006 $0.00130
Sonnet 5 $0.00003 $0.00052
Haiku 4.5 $0.00001 $0.00026

Measured 4d ago against content hash 708b96365a70, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

julia-log 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 4d 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-log/SKILL.md · 37 lines

What it actually says

Julia Log Viewer

Control the log viewer that displays Julia output in a separate terminal window.

Arguments

  • mode - One of: auto, tmux, file, off

Modes

Mode Description
auto Automatically choose the best viewer (tmux if available, otherwise file)
tmux Open a tmux pane showing live output
file Write output to ~/.julia/logs/repl.log (view with tail -f)
off Disable the log viewer

Instructions

  1. Parse the user's argument to determine the mode
  2. Call log_viewer with the specified mode
  3. Report the result to the user

Notes

  • The log viewer shows stdout and stderr from eval calls in real-time
  • Useful for long-running computations where you want to see progress
  • auto is the recommended mode for most users
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. 4d ago First seen · 37 lines · 13 tokens per session scan A 708b96365a70

Subscribe to this mod's changes

julia-log is a skill published in the GitHub repository samtalki/AgentREPL.jl (6 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 13 tokens to every session and 259 once invoked, about $0.0001 per session on Opus 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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