An MCP server that lets an AI coding assistant run Julia code through a persistent REPL, or read-eval-print loop.

Connecting an assistant to Julia for code evaluation and multi-session development. It requires two environment variables to run.

It provides a running Julia environment for evaluating code across sessions instead of starting a new process for every command.

julia-repl — MCP server by samtalki

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 mcp/samtalki/agentrepl.jl/julia-repl

Clone the repo

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

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

julia-repl 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 2d 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/.mcp.json · 13 lines

What it actually says

{
  "julia-repl": {
    "command": "julia",
    "args": [
      "--project=${CLAUDE_PLUGIN_ROOT}/..",
      "${CLAUDE_PLUGIN_ROOT}/../bin/julia-repl-server"
    ],
    "env": {
      "JULIA_REPL_HIGHLIGHT": "true",
      "JULIA_REPL_OUTPUT_FORMAT": "ansi"
    }
  }
}

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.

2d ago First seen · 13 lines scan A c39595e2be7a

Subscribe to this mod's changes

julia-repl is an MCP server published in the GitHub repository samtalki/AgentREPL.jl (6 stars, last pushed 2mo ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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.

agent claude-code claude-skills julia julia-language mcp

julia-repl

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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