Agent skill

Gemini API Dev

by aiskillstore in aiskillstore/marketplace

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…

Apache-2.0Auto-check passedAI & LLM Engineering

Install Gemini API Dev

skills CLI
$ npx skills add aiskillstore/marketplace --skill gemini-api-dev -a claude-code

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

GitHub CLI
$ gh skill install aiskillstore/marketplace 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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/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/

Facts

Skill name
gemini-api-dev
GitHub stars
430
Used in
3 other repos
Token cost
~1.6k tokens
SKILL.md length
448 words
Files
2
Skills in repo
1,085
Repo updated
First seen
Licence
Apache-2.0

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 When to Use, Critical Rules (Always Apply), Quick Start and Documentation Lookup, plus 2 more sections
  • Calls pip, npm and go; reaches ai.google.dev

What it does

Gemini API Dev is an agent skill from aiskillstore/marketplace. 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...

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).

It sits in AI & LLM Engineering, covering LLM API integration and Structured output and tool calling. It works with Google Gemini, Model Context Protocol, Java and Python. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified. The licence is Apache-2.0.

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.

  1. Call search_docs with your query
  2. Read the returned documentation
  3. 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 4ac52da. 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 1.6k tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 448 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~74
When it runs · the whole SKILL.md, loaded when a task matches
~1.6k

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 aiskillstore/marketplace at commit 4ac52da, republished under its Apache-2.0 licence (© aiskillstore). 448 words, ~1,623 tokens.

Download SKILL.mdSave it as .claude/skills/gemini-api-dev/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
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...
risk
unknown
source
https://github.com/google-gemini/gemini-skills/tree/main/skills/gemini-api-dev
source_repo
google-gemini/gemini-skills
source_type
official
date_added
2026-07-01
license
Apache-2.0
license_source
https://github.com/google-gemini/gemini-skills/blob/main/LICENSE

Gemini API Development Skill

When to Use

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...

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
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:


Documentation Lookup

When MCP is Installed (Preferred)

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

  1. Call search_docs with your query
  2. Read the returned documentation
  3. 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.

Show full SKILL.md (156 more words)Show less
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:

  1. Fetch llms.txt to discover available pages
  2. 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.

Limitations

  • Use this skill only when the task clearly matches its upstream product or API scope.
  • Verify commands, API behavior, pricing, quotas, credentials, and deployment effects against current official documentation before making changes.
  • Do not treat generated examples as a substitute for environment-specific tests, security review, or user approval for destructive or costly actions.

© aiskillstore, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in skills/sickn33/gemini-api-dev of aiskillstore/marketplace.

  • SKILL.md
  • skill-report.json

Open the folder on GitHubat commit 4ac52da

Used in 3 other repositories

We found 7 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 3 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

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
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gemini API Dev this skillaiskillstore/marketplace4303 repos~1.6kAutomated safety check: PassApache-2.0
Gemini API DevAyuilos/Miffan1821 repos~1.4kAutomated safety check: PassAGPL-3.0
Gemini API DevJetBrains/skills363—~1.6kAutomated safety check: PassNone
Gemini Interactions APIAyuilos/Miffan182—~4.6kAutomated safety check: PassAGPL-3.0
Gemini API Devgoogle-gemini/gemini-skills4.3k—~5.1kAutomated safety check: PassApache-2.0
Gemini APIgoogle/skills21k3 repos~2.6kAutomated safety check: PassApache-2.0

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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 aiskillstore/marketplace. 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 aiskillstore/marketplace --skill gemini-api-dev -a claude-code`. Or copy the skill folder (skills/sickn33/gemini-api-dev in aiskillstore/marketplace) 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 aiskillstore/marketplace --skill gemini-api-dev -a codex`. Or copy the skill folder (skills/sickn33/gemini-api-dev in aiskillstore/marketplace) 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 aiskillstore/marketplace --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 Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gemini API Dev use?

About 1.6k tokens (SKILL.md is roughly 6.5k 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 (Ayuilos/Miffan, 182 stars), Gemini API Dev (JetBrains/skills, 363 stars), Gemini Interactions API (Ayuilos/Miffan, 182 stars) and Gemini API Dev (google-gemini/gemini-skills, 4.3k 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?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.

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