tlaplus-mcp

Item: tlaplus-mcp
Rating: 28
Author: M8ven

Exposes the TLA+ toolchain (TLC, SANY, PlusCal, TLATeX) as structured JSON tools via the Model Context Protocol, enabling AI assistants to parse, check, simulate, and typeset TLA+ specifications.

→ richashworth/tlaplus-mcp · listed on glama

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// key findings

⚠️

Tool descriptions don’t match what handlers do

2 tools describe read intent but their handlers mutate — tla_parse (line 54: parsingFileRe.exec(output)); tla_state_graph (line 290: fs.mkdirSync(dirname(outputFile), { recursive: true }))

🚨

Known vulnerabilities in dependencies: 1 critical, 3 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

// known CVEs in dependencies1 critical3 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.1.1GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

high@modelcontextprotocol/sdk@1.12.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.1GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

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// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configTLC_JAR_PATH— The server auto-downloads tla2tools.jar to ~/.tlaplus-mcp/lib/ on first use. Set to override.

configTLC_JAVA_OPTS— JVM options -Xmx4g -XX:+UseParallelGC

configTLC_TIMEOUT— Max seconds per TLC run 300

configTLC_WORKSPACE— Base directory for specs Current working directory

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 9 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/richashworth-tlaplus-mcp-120lcg)](https://m8ven.ai/mcp/richashworth-tlaplus-mcp-120lcg)

commit: f93660a4f5554cfebcaca290854737b99ff21b79

code hash: 49eab432734cce5c7305bf6efef00cec87bac07849e5f9c37480621a2f0f07f6

verified: 6/18/2026, 10:53:29 AM

view raw JSON →