What is smalltalk-interop?

A locally run MCP server, a small program that lets an agent use Smalltalk interoperability tools, installed from a Git repository.

Use it when configuring the smalltalk-interop MCP server in the mumez/smalltalk-dev-plugin environment.

It supplies the configured command and port needed to start that server, including its required environment setting.

smalltalk-interop — MCP server by mumez/smalltalk-dev-plugin

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.

Clone the repo

git clone --depth 1 https://github.com/mumez/smalltalk-dev-plugin

Made for: Claude Code.

Or install smalltalk-dev, the plugin that ships this one along with the rest of its 14 skills, 2 MCP servers.

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/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop/github.svg)](https://agentmods.dev/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop)

Your own site

<a href="https://agentmods.dev/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop"><img src="https://agentmods.dev/badge/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop/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/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop"><img src="https://agentmods.dev/badge/mcp/mumez/smalltalk-dev-plugin/smalltalk-interop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

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. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

smalltalk-interop 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 23d 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.

.mcp.json · 13 lines

What it actually says

{
  "smalltalk-interop": {
    "command": "uvx",
    "args": [
      "--from",
      "git+https://github.com/mumez/smalltalk-interop-mcp-server.git",
      "smalltalk-interop-mcp-server"
    ],
    "env": {
      "SIS_PORT": "${SIS_PORT:-8086}"
    }
  }
}

Same file

What else `.mcp.json` configures

This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.

MCP server smalltalk-validator A not measured

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.

23d ago Changed fd45d1a4a36f
2mo ago First seen · 13 lines scan A f94b8a9cbe19

Subscribe to this mod's changes

smalltalk-interop is an MCP server published in the GitHub repository mumez/smalltalk-dev-plugin (17 stars, last pushed 24d ago), licensed MIT. 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 2026-08-30.

Claude Code marketplace mcp pharo-smalltalk plugin smalltalk

smalltalk-interop next to 6 mcp servers from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
smalltalk-interopmumez/smalltalk-dev-plugin	MCP server	17	24d ago	MIT	A	—	Claude Code
bankstatementlybankstatemently/plugins	MCP server	1	1mo ago	MIT	A	—	Claude Code
bankstatemently-mcpbankstatemently/plugins	MCP server	1	1mo ago	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
mcp-servergloballayer/merka2a-mcp	MCP server	0	3mo ago	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
docs-langchainlangchain-ai/langchain	MCP server	149k	today	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
component-explorermicrosoft/vscode	MCP server	195k	today	MIT	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode
codex_message_boardopenai/codex	MCP server	135k	today	Apache-2.0	A	—	Claude Code, Codex, Cursor, Gemini CLI, OpenCode

smalltalk-interop