google-agents-cli-adk-code

Cette compétence doit être utilisée lorsque l'utilisateur souhaite "écrire du code d'agent", "construire un agent avec ADK", "ajouter un outil", "créer un callback", "définir un agent", "utiliser la gestion d'état", ou a besoin de motifs API Python ADK (Agent Development Kit) et d'exemples de code. Fait partie de la suite de compétences Google ADK. Fournit une référence rapide pour les types d'agents, les définitions d'outils, les motifs d'orchestration, les callbacks et la gestion d'état. Ne PAS utiliser pour créer de nouveaux projets (utiliser google-agents-cli-scaffold) ou pour le déploiement...

ADK Code Reference

Activate /google-agents-cli-workflow first for required development phases and scaffolding steps.

1. Study Recipes (No Project Needed)

Read the topic index in references/samples.md before answering "how do I build X". Worked implementations exist for: sandboxed/per-user code execution, agent-loadable SKILL.md skills, cross-session memory, approval gates before risky actions, tool guardrails, per-user credentials, and scheduled/event-driven runs.

The index only gives you a name; the recipe is the code. Clone it and read its AGENTS.md before you implement anything it covers. Hand-writing a Docker or E2B sandbox wrapper, a skill loader, a moderation callback or a memory store — for a capability the index lists — means you stopped at the name.

2. Prerequisites for Writing Code

Do NOT write agent code until a project is scaffolded.

Verify project: run agents-cli info (proceed if config exists).
New project: run agents-cli scaffold create <name>.
Existing code: run agents-cli scaffold enhance ..

Language Support: This reference covers the Python ADK SDK. Support for other languages coming soon.

Quick Reference — Most Common Patterns

from google.adk.agents import Agent

def get_weather(city: str) -> dict:
    """Get current weather for a city."""
    return {"city": city, "temp": "22°C", "condition": "sunny"}

root_agent = Agent(
    name="my_agent",
    model="gemini-3.7-flash",
    instruction="You are a helpful assistant that ...",
    tools=[get_weather],
)

References

Use cheatsheets for common patterns. For deep knowledge, fetch the docs index or inspect the installed package.

Reference	When to read
`references/samples.md`	Topic-indexed catalog of ADK reference recipes. Read in workflow Phase 1 — before scaffolding and before writing code — maps a capability to the recipe that implements it.
`references/adk-python.md`	Core ADK API: `Agent`, tools, callbacks, plugins, state, artifacts, multi-agent systems, `SequentialAgent` / `ParallelAgent` / `LoopAgent`, custom `BaseAgent`, `ManagedAgent` (server-hosted first-party agents), A2A protocol, A2UI. Default for most agents.
`references/adk-workflows.md`	Graph-based Workflow API (ADK 2.0): nodes, edges, fan-out/fan-in, HITL, parallel processing. Use when you need explicit graph topology.
`curl https://adk.dev/llms.txt`	Docs index (every page title + URL). Fetch it, then `WebFetch` the specific page for anything beyond the cheatsheets.
Installed ADK package	Exact signatures and symbols — inspect the source (see "Inspecting ADK Source Code" in `references/adk-python.md`).

Related Skills

/google-agents-cli-workflow — Development workflow, coding guidelines, and operational rules
/google-agents-cli-scaffold — Project creation and enhancement with agents-cli scaffold create / scaffold enhance
/google-agents-cli-eval — Evaluation methodology, dataset schema, and the eval-fix loop
/google-agents-cli-deploy — Deployment targets, CI/CD pipelines, and production workflows