Borrowing it
Nothing to install: this file belongs to pistachiomatt/nanobanana-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.
curl -O https://raw.githubusercontent.com/pistachiomatt/nanobanana-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/pistachiomatt/nanobanana-mcpWrote 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/pistachiomatt/nanobanana-mcp/claude-md)<a href="https://agentmods.dev/instructions/pistachiomatt/nanobanana-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/pistachiomatt/nanobanana-mcp/claude-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/pistachiomatt/nanobanana-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/pistachiomatt/nanobanana-mcp/claude-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 | $0.00935 | $0.00935 |
| Opus 5 | $0.00467 | $0.00467 |
| Sonnet 5 | $0.00187 | $0.00187 |
| Haiku 4.5 | $0.00093 | $0.00093 |
Grade A, and why
nanobanana-mcp CLAUDE.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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code when working in this repo.
What This Is
NanoBanana MCP — a Model Context Protocol server exposing Google Gemini's image generation, editing, and vision/chat capabilities over stdio. Single-file server at src/index.ts.
Build & Run
npm run build # tsc → dist/
npm run dev # tsx watch (hot reload)
npm run start # node dist/index.js
dist/ is committed. After any change to src/index.ts, always npm run build so dist/index.js stays in sync. This enables direct GitHub-based npx usage without a build step.
Architecture
Everything lives in src/index.ts. No multi-file abstractions — it's intentionally a single file. The structure:
- CLI handler (lines ~7–47) —
--install-commands <claude-code|cursor>copies slash commands - Gemini API layer —
callGeminiImageAPI()does raw REST calls with streaming response parsing - Session management —
conversationsMap keyed byconversation_id, holding chat history, image history, aspect ratio, and model selection - MCP tools — registered via
ListToolsRequestSchema/CallToolRequestSchema
Tools
| Tool | Purpose |
|---|---|
gemini_chat |
Multi-turn conversation with optional images |
gemini_generate_image |
Image generation with consistency/reference support |
gemini_edit_image |
Natural language image editing |
set_aspect_ratio |
Set session aspect ratio (required before image gen/edit) |
set_model |
Switch flash/pro per session |
get_image_history |
List generated/edited images in session |
clear_conversation |
Reset session context |
batch |
Execute multiple tools in parallel, return all results |
Prompt Resolution
All three content tools (gemini_chat, gemini_generate_image, gemini_edit_image) support file-based prompts as an alternative to inline strings:
message/message_fileprompt/prompt_fileedit_prompt/edit_prompt_file
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.
- 10d ago First seen · 85 lines · 935 tokens per session scan A 93901991d2fd
nanobanana-mcp CLAUDE.md is an instructions file published in the GitHub repository pistachiomatt/nanobanana-mcp (0 stars, last pushed 4mo ago), licensed MIT. It adds 935 tokens to every session, about $0.0047 per session on Opus 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 2026-08-31.
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