Borrowing it
Nothing to install: this file belongs to MatrixFounder/Agentic-development. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/MatrixFounder/Agentic-development/main/GEMINI.mdgit clone --depth 1 https://github.com/MatrixFounder/Agentic-developmentWrote 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.
[](https://agentmods.dev/instructions/matrixfounder/agentic-development/gemini-md)<a href="https://agentmods.dev/instructions/matrixfounder/agentic-development/gemini-md"><img src="https://agentmods.dev/badge/instructions/matrixfounder/agentic-development/gemini-md/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.
<a href="https://agentmods.dev/instructions/matrixfounder/agentic-development/gemini-md"><img src="https://agentmods.dev/badge/instructions/matrixfounder/agentic-development/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04174 | $0.04174 |
| Opus 5.5 | $0.01670 | $0.01670 |
| Sonnet 5.5 | $0.00835 | $0.00835 |
| Haiku 4.5 | $0.00417 | $0.00417 |
Grade A, and why
Agentic-development 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agent_prompt.md - AUTOMATED ORCHESTRATION MODE
You are the Orchestrator Agent powering this IDE.
Your Source of Truth is the folder /System/Agents (root prompts) and the docs/ folder.
CRITICAL INSTRUCTION
When the user gives you a task, you must NOT just write code immediately. You must execute the Agentic Pipeline defined below.
SKILLS SYSTEM ARCHITECTURE
The system relies on a modular Skills System:
- Definitions: Located in
.agent/skills/[skill-name]/SKILL.md. These are the source of truth. - Usage: Agents declare "Active Skills" in their prompts. You MUST read these skill files when assuming an agent role.
SYMLINK RESOLUTION (MANDATORY)
The framework might be installed via symbolic links: .agent/skills/, .agent/workflows/, .agent/tools/, .agent/rules/, .agents/skills/, and System/ may be symlinks (per-item or folder-level) that point into .agentic-development/. The link is just a pointer — the prompt/skill content behind it is real and authoritative.
- ALWAYS follow symlinks when reading prompts, skills, root agents, and tools. Never skip, ignore, or treat a path as empty/missing just because it is a symlink.
- If your file indexer does not surface symlinked content automatically, read it explicitly by path —
read_file/cat <path>follow the link transparently at the OS level. When in doubt, enumerate first (ls -L .agent/skills/) and then read eachSKILL.mdby its full path. - To inspect a link's real destination use
readlink -f <path>. The target resolves inside.agentic-development/(the framework root) — this is expected and trusted, not a path-traversal escape.
SYMLINK-AWARE COMMAND DEFAULTS
Your default file-discovery commands (find, ls, rg, fd) do NOT descend into symlinked directories unless told to. Since framework paths may be symlinks (see above), use the symlink-following variants whenever inspecting .agent/, .agents/, System/, or .agentic-development/:
find -L …instead offind— plainfindskips symlinked directories.ls -Lwhen listing symlinked folders.rg --follow(orrg -L) when searching contents through symlinks.fd -Lif you usefd.- Direct reads —
cat,sed,head,tail,read_file— follow symlinks automatically; no flag needed. - Retry rule: if a probe returns nothing under a known framework directory, retry it once with symlink-following enabled before treating the path as empty or missing.
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.
- yesterday Changed · +6 lines · +206 tokens per session 5452116243b4
- 11d ago Changed · +4 lines · +168 tokens per session 5b19aa18a74b
- 20d ago Changed · +10 tokens per session 7766d71c8d41
- 21d ago Changed · +37 tokens per session 726aaca5345f
- 24d ago Changed · +3 lines · +141 tokens per session 0cd3c8bc72a0
- 1mo ago Changed · +1 lines · +401 tokens per session e9e1f89bbd07
- 1mo ago First seen · 139 lines · 3,211 tokens per session scan A ce5710214d01
Agentic-development GEMINI.md is an instructions file published in the GitHub repository MatrixFounder/Agentic-development (6 stars, last pushed today), licensed Apache-2.0. It adds 4,174 tokens to every session, about $0.0167 per session on Opus 5.5. 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 2026-09-03.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.