spec-flow

spec-flow is a plugin for Gemini CLI from marcusgoll/Spec-Flow. Its token cost is not measured, scanned A, original, MIT.

A spec-driven development workflow toolkit for Gemini CLI. Spec-driven development means writing and following a detailed description of the desired change through the software lifecycle.

In plain words
What is it for?
Use it to guide software work through the Spec-Flow method in Gemini CLI projects.
Why use it?
It gives the coding agent a defined process for turning a request into a planned and implemented change instead of relying on ad hoc steps.

Plugin for Gemini CLI

Written for Gemini CLI: a Gemini CLI extension manifest. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Gemini CLI.

Good fit Use it to guide software work through the Spec-Flow method in Gemini CLI projects.

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Install with agentmods
npx agentmods add plugins/marcusgoll/spec-flow/gemini-extension
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/marcusgoll/Spec-Flow

Made for: Gemini CLI.

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 spec-flow

README.md
[![agentmods](https://agentmods.dev/badge/plugins/marcusgoll/spec-flow/gemini-extension/github.svg)](https://agentmods.dev/plugins/marcusgoll/spec-flow/gemini-extension)
Your own site
<a href="https://agentmods.dev/plugins/marcusgoll/spec-flow/gemini-extension"><img src="https://agentmods.dev/badge/plugins/marcusgoll/spec-flow/gemini-extension/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 spec-flow

Your own site · 80×15
<a href="https://agentmods.dev/plugins/marcusgoll/spec-flow/gemini-extension"><img src="https://agentmods.dev/badge/plugins/marcusgoll/spec-flow/gemini-extension.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

spec-flow 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 2d 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.

gemini-extension.json · 12 lines

What it actually says

{
  "name": "spec-flow",
  "version": "1.0.0",
  "description": "Spec-Driven Development workflow toolkit for Gemini CLI - Ported from Claude Code",
  "contextFiles": [
    "GEMINI.md",
    "AGENTS.md",
    "package.json"
  ],
  "instructions": "You are the Spec-Flow Orchestrator. Your goal is to guide the user through the software development lifecycle using the Spec-Flow methodology. Follow the instructions in GEMINI.md strictly."
}
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. 2d ago First seen · 12 lines scan A de8207d40c6d

Subscribe to this mod's changes

spec-flow is a plugin published in the GitHub repository marcusgoll/Spec-Flow (93 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-11.