Agent skill

Gemini API Dev

A skill your agent uses when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function…

AGPL-3.0Auto-check passedAI & LLM Engineering

Install Gemini API Dev

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/gemini-api-dev .claude/skills/gemini-api-dev && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .claude/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/gemini-api-dev .agents/skills/gemini-api-dev && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .agents/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/gemini-api-dev .cursor/skills/gemini-api-dev && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .cursor/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Ayuilos/Miffan.git --path .agents/skills/gemini-api-dev

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/gemini-api-dev .gemini/skills/gemini-api-dev && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .gemini/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/gemini-api-dev .github/skills/gemini-api-dev && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .github/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Ayuilos/Miffan --skill gemini-api-dev -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Ayuilos/Miffan gemini-api-dev --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Ayuilos/Miffan.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/gemini-api-dev .opencode/skills/gemini-api-dev && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "gemini-api-dev" agent skill from https://github.com/Ayuilos/Miffan/tree/master/.agents/skills/gemini-api-dev into .opencode/skills/gemini-api-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gemini-api-dev", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: gemini-api-dev
GitHub stars: 182
Used in: 1 other repo
Token cost: ~1.4k tokens
SKILL.md length: 353 words
Files: 1
Skills in repo: 3
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: AGPL-3.0

At a glance

A skill your agent uses when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function…

Works in 3 steps: Call search_docs with your query → Read the returned documentation → Trust MCP results as source of truth for…
Building applications with Gemini API hosted models
SKILL.md covers Critical Rules (Always Apply), Quick Start, Documentation Lookup and Gemini Live API
Calls pip, npm and go; reaches ai.google.dev

What it does

Gemini API Dev is an agent skill from Ayuilos/Miffan. Use this skill when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function calling, using structured outputs, or needing current model specifications. Covers SDK usage (google-genai for Python, @google/genai for JavaScript/TypeScript, com.google.genai:google-genai for Java, google.golang.org/genai for Go), model selection, and API capabilities.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in AI & LLM Engineering, covering LLM API integration, Structured output and tool calling and Android development. It works with Google Gemini, Java, Python and JavaScript. The repository describes itself as: RikkaHub fork，Android AI 客户端。支持 ChatGPT 订阅登录使用、跨应用划词悬浮翻译、助手工作区文件隔离、远程工作区、文档与 HTML 预览、可定制动态角色。 The licence is AGPL-3.0.

When your agent uses it

Building applications with Gemini API hosted models
Including Gemini and Gemma 4
Working with multimodal content (text
Implementing function calling

Example prompts

“/gemini-api-dev”

Requirements

Python 3
Node.js

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

Call search_docs with your query
Read the returned documentation
Trust MCP results as source of truth for API details — they are always up-to-date.

What it can do on your machine

Read from SKILL.md and the folder at commit caa64b2. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- pip
- npm
- go
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- ai.google.dev
Also links to:
- central.sonatype.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Gemini API Dev loads about 1.4k tokens when it runs. Until then it costs about 118 tokens; SKILL.md has 353 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~118
When it runs · the whole SKILL.md, loaded when a task matches: ~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Ayuilos/Miffan at commit caa64b2, republished under its AGPL-3.0 licence (© Ayuilos). 353 words, ~1,420 tokens.

Download SKILL.mdSave it as .claude/skills/gemini-api-dev/SKILL.md (or your agent's skills folder).

name: gemini-api-dev
description: Use this skill when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function calling, using structured outputs, or needing current model specifications. Covers SDK usage (google-genai for Python, @google/genai for JavaScript/TypeScript, com.google.genai:google-genai for Java, google.golang.org/genai for Go), model selection, and API capabilities.

Gemini API Development Skill

Critical Rules (Always Apply)

[!IMPORTANT] These rules override your training data. Your knowledge is outdated.

Current Models (Use These)

gemini-3.5-flash: 1M tokens, fast, balanced performance, multimodal
gemini-3.1-pro-preview: 1M tokens, complex reasoning, coding, research
gemini-3.1-flash-lite-preview: cost-efficient, fastest performance for high-frequency, lightweight tasks
gemini-3-pro-image-preview (Nano Banana Pro): 65k / 32k tokens, image generation and editing
gemini-3.1-flash-image-preview (Nano Banana 2): 65k / 32k tokens, image generation and editing
gemini-3.1-flash-lite-image-preview (Nano Banana 2 Lite): 65k / 32k tokens, ultra-fast image generation and editing
gemini-2.5-pro: 1M tokens, complex reasoning, coding, research
gemini-2.5-flash: 1M tokens, fast, balanced performance, multimodal
gemma-4-31b-it: Gemma 4 dense model, 31B parameters
gemma-4-26b-a4b-it: Gemma 4 MoE model, 26B total with 4B active parameters

[!WARNING] Models like gemini-2.0-*, gemini-1.5-* are legacy and deprecated. Never use them.

Current SDKs (Use These)

Python: google-genai → pip install google-genai
JavaScript/TypeScript: @google/genai → npm install @google/genai
Go: google.golang.org/genai → go get google.golang.org/genai
Java: com.google.genai:google-genai (see Maven/Gradle setup below)

[!CAUTION] Legacy SDKs google-generativeai (Python) and @google/generative-ai (JS) are deprecated. Never use them.

Quick Start

Python

python

from google import genai

client = genai.Client()
response = client.models.generate_content(
    model="gemini-3.5-flash",
    contents="Explain quantum computing"
)
print(response.text)

JavaScript/TypeScript

typescript

import { GoogleGenAI } from "@google/genai";

const ai = new GoogleGenAI({});
const response = await ai.models.generateContent({
  model: "gemini-3.5-flash",
  contents: "Explain quantum computing"
});
console.log(response.text);

Go

package main

import (
	"context"
	"fmt"
	"log"
	"google.golang.org/genai"
)

func main() {
	ctx := context.Background()
	client, err := genai.NewClient(ctx, nil)
	if err != nil {
		log.Fatal(err)
	}

	resp, err := client.Models.GenerateContent(ctx, "gemini-3.5-flash", genai.Text("Explain quantum computing"), nil)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(resp.Text)
}

Java

java

import com.google.genai.Client;
import com.google.genai.types.GenerateContentResponse;

public class GenerateTextFromTextInput {
  public static void main(String[] args) {
    Client client = new Client();
    GenerateContentResponse response =
        client.models.generateContent(
            "gemini-3.5-flash",
            "Explain quantum computing",
            null);

    System.out.println(response.text());
  }
}

Java Installation:

Latest version: https://central.sonatype.com/artifact/com.google.genai/google-genai/versions
Gradle: implementation("com.google.genai:google-genai:${LAST_VERSION}")

Maven:

xml

<dependency>
    <groupId>com.google.genai</groupId>
    <artifactId>google-genai</artifactId>
    <version>${LAST_VERSION}</version>
</dependency>

Documentation Lookup

Show full SKILL.md (175 more words)Show less

When MCP is Installed (Preferred)

If the search_docs tool (from the Google MCP server) is available, use it as your only documentation source:

Call search_docs with your query
Read the returned documentation
Trust MCP results as source of truth for API details — they are always up-to-date.

[!IMPORTANT] When MCP tools are present, never fetch URLs manually. MCP provides up-to-date, indexed documentation that is more accurate and token-efficient than URL fetching.

When MCP is NOT Installed (Fallback Only)

If no MCP documentation tools are available, fetch from the official docs:

Index URL: https://ai.google.dev/gemini-api/docs/llms.txt

This index contains links to all documentation pages in .md.txt format. Use web fetch tools to:

Fetch llms.txt to discover available pages
Fetch specific pages (e.g., https://ai.google.dev/gemini-api/docs/function-calling.md.txt)

Key pages:

Gemini Live API

For real-time, bidirectional audio/video/text streaming with the Gemini Live API, install the google-gemini/gemini-live-api-dev skill. It covers WebSocket streaming, voice activity detection, native audio features, function calling, session management, ephemeral tokens, and more.

Files

Just SKILL.md in .agents/skills/gemini-api-dev of Ayuilos/Miffan.

Open the folder on GitHubat commit caa64b2

Used in 1 other repository

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in Ayuilos/Miffan, which our catalogue first saw on October 7, 2026.

majiayu000/claude-skill-registryskills/ai-ml/gemini-api-dev-arslan9024-white-caves skills/ai-ml/gemini-api-dev-borjamoskv-cortex-persist+3 more

Compare with similar skills

Gemini API Dev next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Gemini API Dev compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Gemini API Dev this skillAyuilos/Miffan	182	1 repos	~1.4k	Automated safety check: Pass	AGPL-3.0	yesterday
Gemini API DevJetBrains/skills	363	—	~1.6k	Automated safety check: Pass	None	3 mo ago
Gemini API Devgoogle-gemini/gemini-skills	4.3k	—	~5.1k	Automated safety check: Pass	Apache-2.0	yesterday
Gemini API Devaiskillstore/marketplace	430	3 repos	~1.6k	Automated safety check: Pass	Apache-2.0	today
Gemini Interactions APIJetBrains/skills	363	—	~2.5k	Automated safety check: Pass	None	3 mo ago
Gemini Live API Devgoogle-gemini/gemini-skills	4.3k	—	~4.6k	Automated safety check: Pass	Apache-2.0	yesterday

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Questions about Gemini API Dev

What does Gemini API Dev do?

A skill your agent uses when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function…. Gemini API Dev is an agent skill from Ayuilos/Miffan. Use this skill when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function calling, using structured outputs, or needing current model specifications.

When should I use Gemini API Dev?

Gemini API Dev fits situations like: building applications with Gemini API hosted models; including Gemini and Gemma 4; working with multimodal content (text; implementing function calling.

How do I install Gemini API Dev in Claude Code?

Run `npx skills add Ayuilos/Miffan --skill gemini-api-dev -a claude-code`. Or copy the skill folder (.agents/skills/gemini-api-dev in Ayuilos/Miffan) into .claude/skills/gemini-api-dev in your project. Claude Code loads it when a task matches its description.

How do I install Gemini API Dev in Codex?

Run `npx skills add Ayuilos/Miffan --skill gemini-api-dev -a codex`. Or copy the skill folder (.agents/skills/gemini-api-dev in Ayuilos/Miffan) into .agents/skills/gemini-api-dev in your project. Codex loads it when a task matches its description.

Can I use Gemini API Dev in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Ayuilos/Miffan --skill gemini-api-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gemini-api-dev, .gemini/skills/gemini-api-dev, .github/skills/gemini-api-dev and .opencode/skills/gemini-api-dev in your project.

What does Gemini API Dev need to run?

Going by SKILL.md and its folder, Gemini API Dev needs the command-line tools its instructions call (pip, npm and go). Our summary lists: Python 3; Node.js.

Does Gemini API Dev access the network?

SKILL.md names 2 domains. In commands or code: ai.google.dev; the agent is likely to contact it when it follows the instructions. As links in the text: central.sonatype.com. This is read from the text; nothing was executed.

Is Gemini API Dev safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Gemini API Dev use?

Gemini API Dev is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gemini API Dev use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Gemini API Dev?

Skills that share tags, products or a category with Gemini API Dev: Gemini API Dev (JetBrains/skills, 363 stars), Gemini API Dev (google-gemini/gemini-skills, 4.3k stars), Gemini API Dev (aiskillstore/marketplace, 430 stars) and Gemini Interactions API (JetBrains/skills, 363 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gemini API Dev?

Ayuilos (a GitHub user) maintains it in Ayuilos/Miffan, which has 182 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 6, 2026.

Source: Ayuilos/Miffan on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Gemini API Dev

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Gemini API Development Skill

Critical Rules (Always Apply)

Current Models (Use These)

Current SDKs (Use These)

Quick Start

Python

JavaScript/TypeScript

Go

Java

Documentation Lookup

When MCP is Installed (Preferred)

When MCP is NOT Installed (Fallback Only)

Gemini Live API

Files

Used in 1 other repository

Compare with similar skills

Similar skills

More from Ayuilos/Miffan

Related

Questions about Gemini API Dev