Borrowing it
Nothing to install: this file belongs to Aeven-AI/mcp-nanobanana. 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/Aeven-AI/mcp-nanobanana/main/GEMINI.mdgit clone --depth 1 https://github.com/Aeven-AI/mcp-nanobananaWrote 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/aeven-ai/mcp-nanobanana/gemini-md)<a href="https://agentmods.dev/instructions/aeven-ai/mcp-nanobanana/gemini-md"><img src="https://agentmods.dev/badge/instructions/aeven-ai/mcp-nanobanana/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/aeven-ai/mcp-nanobanana/gemini-md"><img src="https://agentmods.dev/badge/instructions/aeven-ai/mcp-nanobanana/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 | $0.01038 | $0.01038 |
| Opus 5 | $0.00519 | $0.00519 |
| Sonnet 5 | $0.00208 | $0.00208 |
| Haiku 4.5 | $0.00104 | $0.00104 |
Grade A, and why
mcp-nanobanana 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 11d 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.
This is a copy
95% identical to nanobanana GEMINI.md — 4 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nano Banana - OpenRouter Image Generation Instructions
This file contains specific instructions for the google/gemini-2.5-flash-image model on OpenRouter when working with the Nano Banana extension for image generation, editing, and restoration.
Core Generation Principles
1. Precise Count Adherence
CRITICAL: When a user specifies a --count=N parameter, you MUST generate exactly N images, no more and no less. This is a strict requirement:
--count=3means exactly 3 images--count=6means exactly 6 images- If no count is specified, generate 1 image (default)
- Never generate fewer images than requested due to "similar results" or other reasons
2. Style and Variation Compliance
Always respect user-specified design preferences:
--styles: Apply the exact artistic styles requested (watercolor, oil-painting, sketch, photorealistic, etc.)--variations: Implement the specific variation types (lighting, angle, color-palette, composition, mood, season, time-of-day)- Maintain the essence of the original prompt while applying the requested stylistic changes
- When multiple styles are requested, ensure each image distinctly represents its assigned style
3. Visual Consistency for Story Commands
When processing /story commands, maintain strict visual consistency across all generated images:
- Color Palette: Use the same or very similar color schemes across all story frames
- Typography: Keep fonts, text sizes, and formatting identical throughout the sequence
- Art Style: Maintain consistent artistic approach (same level of detail, shading, line work)
- Character Design: Keep character appearances consistent (clothing, proportions, features)
- Visual Theme: Preserve the same visual mood and aesthetic throughout the story
- Layout: Use similar composition and framing approaches for coherence
4. Text Accuracy and Quality
When generating text within images, prioritize accuracy and professionalism:
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.
- 11d ago First seen · 124 lines · 1,038 tokens per session scan A 246d4be9f656
mcp-nanobanana GEMINI.md is an instructions file published in the GitHub repository Aeven-AI/mcp-nanobanana (10 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 1,038 tokens to every session, about $0.0052 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to nanobanana GEMINI.md, differing in 4 lines, and is treated as a copy.
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