Factorio MCP Server (mmckeen-nv/factorio-companion) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 14 tools. No publisher has claimed this listing.

C
Emerging
74/100
8 days ago

Factorio MCP Server

Provides status, stats, nearby scans, item analysis, screenshots, ghost placement, in-game replies, and drone status for Factorio via stdio JSON-RPC.

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

mmckeen-nv

Source: Glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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// key findings
🚨
Secret credentials may flow to a network call
2 flows detected: FACTORIO_RCON_PASSWORD. We can’t prove the destination matches the brand the credential belongs to.
🔐
You'll be asked for 1 credential: FACTORIO_RCON_PASSWORD
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configCODEX_EXE
configFACTORIO_CODEX_DEEP_REASONINGOverride with FACTORIO_CODEX_FAST_REASONING, ,
configFACTORIO_CODEX_FAST_REASONINGOverride with , FACTORIO_CODEX_DEEP_REASONING,
configFACTORIO_CODEX_MODEL
configFACTORIO_CODEX_OUTBOX
configFACTORIO_CODEX_ROUTE_MODE
configFACTORIO_CODEX_ROUTE_TIMEOUT_MS
configFACTORIO_CODEX_SCAN_CACHE
configFACTORIO_CODEX_SESSIONS
configFACTORIO_CODEX_STATE
configFACTORIO_OLLAMA_FAST_MODEL
configFACTORIO_OLLAMA_KEEP_ALIVE
configFACTORIO_OLLAMA_MAX_TOOL_ROUNDS
configFACTORIO_OLLAMA_MODEL
configFACTORIO_OLLAMA_TEMPERATURE
configFACTORIO_OLLAMA_TIMEOUT_MS
configFACTORIO_OLLAMA_VISION_MODEL
configFACTORIO_OLLAMA_WARMUP
configFACTORIO_PLAYER
configFACTORIO_RCON_HOST
🔐 secretFACTORIO_RCON_PASSWORDdrone status. Set in the MCP server environment.
configFACTORIO_RCON_PORT
configFACTORIO_SCRIPT_OUTPUT_ROOT
configOLLAMA_HOST
configRIVET_MAX_SCREENSHOT_BYTES
configRIVET_MEMORY_ROOT
configRIVET_SESSION_ID
configRIVET_TELEMETRY_FILE
configRIVET_TRACE
configRIVET_TRACE_FILE
configXDG_DATA_HOME
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

14/14 tools missing one or more hints — factorio_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); factorio_stats (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); factorio_scan (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +11 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool test coverage

6/14 tools referenced in tests (43%)

Write tests that reference each tool by name so every tool has at least one test.

Secrets never reach shell commands

1 secret value passed to a subprocess as an argument — no shell is invoked, so there is nothing to inject into

Never pass secrets through shell commands. Use library APIs that accept credentials as arguments.

Secrets not written to files

2 secret values written to files

Avoid persisting secrets to disk. Keep them in memory or your secret manager.

Secrets not logged

17 secret values sent to log

Redact or omit secret values from log output.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 6 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/mmckeen-nv/factorio-companion)](https://m8ven.ai/mcp/mmckeen-nv/factorio-companion)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: 7ff870df15845d03b0c64a894531efb4f5333ac0
code hash: b69d17290646179731c351e2f24932d7b31d186f79c5ae9e0dcc5f1cc37be986
verified: 9/1/2026, 11:27:34 PM
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