agentmods.dev

smalltalk-validator

smalltalk-validator is an MCP server for Claude Code from mumez/smalltalk-dev-plugin. Its token cost is not measured, scanned A, original, MIT.

A local MCP server called smalltalk-validator, installed from a GitHub package. MCP is a standard way for an AI agent to connect to external tools or data sources.

In plain words
What is it for?
Starting the configured smalltalk-validator server locally through `uvx` when its specific tools are defined elsewhere.
Why use it?
The description gives its installation and launch details but does not say what it validates or which operations it supports.

MCP server for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: listed in a Claude config.

Part of the smalltalk-dev plugin — 14 skills, 2 MCP servers shipped together

One of 2 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 1 are separate, each on its own page.

not rated 17repo +1 24d ago A scan tokens not measured original MIT

Good fit Starting the configured smalltalk-validator server locally through uvx when its specific tools are defined elsewhere.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/mumez/smalltalk-dev-plugin/smalltalk-validator
View source ↗ 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.

agentmods badge for smalltalk-validator

README.md
[![agentmods](https://agentmods.dev/badge/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator/github.svg)](https://agentmods.dev/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator)
Your own site
<a href="https://agentmods.dev/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator"><img src="https://agentmods.dev/badge/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator/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 smalltalk-validator

Your own site · 80×15
<a href="https://agentmods.dev/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator"><img src="https://agentmods.dev/badge/mcp/mumez/smalltalk-dev-plugin/smalltalk-validator.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-validator 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 2mo 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 · 10 lines

What it actually says

{
  "smalltalk-validator": {
    "command": "uvx",
    "args": [
      "--from",
      "git+https://github.com/mumez/smalltalk-validator-mcp-server.git@main",
      "smalltalk-validator-mcp-server"
    ]
  }
}
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.

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. 2mo ago First seen · 10 lines scan A 7d0f465799aa

Subscribe to this mod's changes

smalltalk-validator 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 Codemarketplacemcppharo-smalltalkpluginsmalltalk
Related

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smalltalk-validator next to 6 mcp servers from other repositories
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