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flac-mcp: Instructions file for Gemini CLI

GEMINI.md

flac-mcp GEMINI.md is an instructions file for Gemini CLI from yusong652/flac-mcp. It costs 999 tokens per session, scanned A, a copy of flac-mcp AGENTS.md, MIT.

Project instructions for flac-mcp, which connects AI tools to ITASCA FLAC, software used for geotechnical and rock-mechanics modelling. It covers a Python MCP server and a separate bridge running inside the FLAC desktop application.

In plain words
What is it for?
Use them when changing the MCP server, the FLAC GUI bridge, WebSocket communication, task execution, or diagnostic code.
Why use it?
They clarify which code runs in which environment and how those parts communicate, reducing mistakes caused by their different Python versions and deployment contexts.

Instructions file for Gemini CLI

Written for Gemini CLI: the file is GEMINI.md. Also seen: mentions Gemini CLI.

This is yusong652/flac-mcp's own configuration. It tells Gemini CLI how to work on flac-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything flac-mcp configures →

not rated 39repo 2mo ago A scan 999 tokens copy · 88% MIT
View source ↗ yusong652/flac-mcp pypi.org
Reuse

Borrowing it

Nothing to install: this file belongs to yusong652/flac-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/yusong652/flac-mcp/main/GEMINI.md
Clone the repo
git clone --depth 1 https://github.com/yusong652/flac-mcp

Made for: Gemini CLI.

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README.md
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Per session 999 This file is loaded in full into every session.
When invoked 999 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 88% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00999 $0.00999
Opus 5 $0.00500 $0.00500
Sonnet 5 $0.00200 $0.00200
Haiku 4.5 $0.00100 $0.00100

Measured 8d ago against content hash 8c6b6a861b0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

flac-mcp GEMINI.md 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 8d 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.

Origin

This is a copy

88% identical to flac-mcp AGENTS.md — 7 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

GEMINI.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GEMINI.md

Guidance for coding agents working in the flac-mcp repository.

Project Overview

flac-mcp provides an MCP server for ITASCA FLAC workflows plus a bridge runtime that runs inside FLAC GUI.

This repository intentionally has two runtime contexts:

  • src/flac_mcp/ (Python >= 3.10): MCP server package used by clients/tooling
  • itasca-mcp-bridge/ (FLAC embedded Python, often 3.6): WebSocket bridge running inside FLAC GUI

Treat these as separate deployment targets even though they live in one repository.

Core Architecture

MCP side (src/flac_mcp)

  • Exposes documentation tools and execution tools through FastMCP
  • Communicates with bridge via WebSocket client (flac_mcp.bridge.client)
  • Returns a unified tool envelope: ok, data, error
  • Uses script-first execution model (flac_execute_task + flac_check_task_status)

Bridge side (itasca-mcp-bridge)

  • Runs in FLAC GUI process
  • Owns thread-safe interaction with ITASCA SDK
  • Handles long-running tasks and diagnostics
  • Must be started from FLAC GUI (for example with %run .../itasca-mcp-bridge/start_bridge.py)

Repository Layout

flac-mcp/
├── src/flac_mcp/
│   ├── bridge/          # MCP-side bridge client/task manager
│   ├── knowledge/       # command/API/reference search system
│   ├── tools/           # MCP tool implementations
│   ├── formatting.py    # shared response formatting
│   └── server.py        # MCP server entrypoint
├── itasca-mcp-bridge/      # runtime executed inside FLAC GUI
└── tests/               # MCP/tool contract tests

Development Commands

Run from repository root.

uv sync
uv sync --group dev
uv run flac-mcp
uv run pytest tests/test_phase2_tools.py
uv run pytest tests/test_tool_contracts.py

Engineering Rules

  1. Keep MCP and bridge concerns separate.

    • Do not couple MCP logic to FLAC GUI internals.
    • Do not introduce application/session policy into bridge runtime.

  2. Preserve script-only execution semantics.

    • flac_execute_task submits scripts and returns quickly.
    • Progress/result retrieval goes through flac_check_task_status.

Read the full file on GitHub · 118 lines

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. 8d ago First seen · 118 lines · 999 tokens per session scan A 8c6b6a861b0f

Subscribe to this mod's changes

flac-mcp GEMINI.md is an instructions file published in the GitHub repository yusong652/flac-mcp (39 stars, last pushed 2mo ago), licensed MIT. It adds 999 tokens to every session, about $0.0050 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to flac-mcp AGENTS.md, differing in 7 lines, and is treated as a copy.

Claude CodeScientificai-agentclaudecodexcontinuum-mechanicsfinite-difference-method
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