Borrowing it
Nothing to install: this file belongs to derailed-dash/gemini-api-docs-mcp-ext. 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/derailed-dash/gemini-api-docs-mcp-ext/main/GEMINI.mdgit clone --depth 1 https://github.com/derailed-dash/gemini-api-docs-mcp-extWrote 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/derailed-dash/gemini-api-docs-mcp-ext/gemini-md)<a href="https://agentmods.dev/instructions/derailed-dash/gemini-api-docs-mcp-ext/gemini-md"><img src="https://agentmods.dev/badge/instructions/derailed-dash/gemini-api-docs-mcp-ext/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/derailed-dash/gemini-api-docs-mcp-ext/gemini-md"><img src="https://agentmods.dev/badge/instructions/derailed-dash/gemini-api-docs-mcp-ext/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 | $0.00237 | $0.00237 |
| Opus 5.5 | $0.00095 | $0.00095 |
| Sonnet 5.5 | $0.00047 | $0.00047 |
| Haiku 4.5 | $0.00024 | $0.00024 |
Grade A, and why
gemini-api-docs-mcp-ext 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 2mo 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.
What it actually says
Gemini API Documentation Agent Instructions
This extension provides tools to access official Google Gemini API documentation using the gemini-api-docs-mcp server.
Capabilities
- Search for documentation on Gemini API features, models, and SDKs.
- Retrieve detailed coding examples and best practices for implementing Gemini API solutions.
- Access the latest technical specifications for Gemini models (e.g. Flash, Pro models).
When to Use
Use these tools when the user:
- Asks for help with Gemini API integration or SDK usage.
- Needs to know the capabilities of specific Gemini models.
- Wants to understand advanced features like Context Caching, Function Calling, or Structured Outputs.
- Requires current, authoritative information from the official documentation.
Best Practices
- Always prefer searching the documentation for the most accurate and up-to-date information.
- When providing code snippets, prioritize those found in the official docs or adapted from them.
- Reference the official Gemini API documentation when explaining concepts or features.
Official Reference
For more context on the purpose of this extension, refer to: Build coding agents with Gemini
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.
- 2mo ago First seen · 29 lines · 237 tokens per session scan A 2c76a279b30e
gemini-api-docs-mcp-ext GEMINI.md is an instructions file published in the GitHub repository derailed-dash/gemini-api-docs-mcp-ext (1 stars, last pushed 7mo ago), licensed MIT. It adds 237 tokens to every session, about $0.0009 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 2026-08-31.
gemini-api-docs-mcp-ext GEMINI.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| gemini-api-docs-mcp-ext GEMINI.mdderailed-dash/gemini-api-docs-mcp-ext | Instructions file | 1 | 7mo ago | MIT | A | 237 | Gemini CLI |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |